From 449a64979c859fa5929cccdf4db541c2fe31b0b3 Mon Sep 17 00:00:00 2001 From: Adam Koch Date: Wed, 26 Feb 2014 13:56:39 +1100 Subject: [PATCH] Remove bitmapfun code sample (it has moved to samples framework). Change-Id: I70fc6437815001c7b98174cfe2e29e1244c55e75 --- .../training/bitmapfun/BitmapFun/build.gradle | 27 - .../BitmapFun/src/main/AndroidManifest.xml | 55 - .../android/bitmapfun/provider/Images.java | 245 ----- .../bitmapfun/ui/ImageDetailActivity.java | 213 ---- .../bitmapfun/ui/ImageDetailFragment.java | 107 -- .../bitmapfun/ui/ImageGridActivity.java | 45 - .../bitmapfun/ui/ImageGridFragment.java | 332 ------ .../bitmapfun/ui/RecyclingImageView.java | 89 -- .../android/bitmapfun/util/AsyncTask.java | 693 ------------- .../android/bitmapfun/util/DiskLruCache.java | 953 ------------------ .../android/bitmapfun/util/ImageCache.java | 725 ------------- .../android/bitmapfun/util/ImageFetcher.java | 311 ------ .../android/bitmapfun/util/ImageResizer.java | 264 ----- .../android/bitmapfun/util/ImageWorker.java | 477 --------- .../util/RecyclingBitmapDrawable.java | 103 -- .../example/android/bitmapfun/util/Utils.java | 82 -- .../main/res/drawable-hdpi/ic_launcher.png | Bin 4440 -> 0 bytes .../main/res/drawable-ldpi/ic_launcher.png | Bin 2729 -> 0 bytes .../main/res/drawable-mdpi/ic_launcher.png | Bin 2741 -> 0 bytes .../main/res/drawable-nodpi/empty_photo.png | Bin 3159 -> 0 bytes .../main/res/drawable-xhdpi/ic_launcher.png | Bin 6245 -> 0 bytes .../main/res/drawable-xxhdpi/ic_launcher.png | Bin 11128 -> 0 bytes .../res/drawable/photogrid_list_selector.xml | 31 - .../main/res/layout/image_detail_fragment.xml | 34 - .../main/res/layout/image_detail_pager.xml | 23 - .../main/res/layout/image_grid_fragment.xml | 29 - .../BitmapFun/src/main/res/menu/main_menu.xml | 25 - .../src/main/res/values-large/dimens.xml | 23 - .../src/main/res/values-v11/styles.xml | 36 - .../src/main/res/values-xlarge/dimens.xml | 23 - .../BitmapFun/src/main/res/values/colors.xml | 23 - .../BitmapFun/src/main/res/values/dimens.xml | 24 - .../BitmapFun/src/main/res/values/strings.xml | 31 - .../BitmapFun/src/main/res/values/styles.xml | 29 - samples/training/bitmapfun/README | 8 - samples/training/bitmapfun/build.gradle | 1 - .../bitmapfun/local.properties.sample | 7 - samples/training/bitmapfun/settings.gradle | 1 - 38 files changed, 5069 deletions(-) delete mode 100644 samples/training/bitmapfun/BitmapFun/build.gradle delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/AndroidManifest.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/provider/Images.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailActivity.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailFragment.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridActivity.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridFragment.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/RecyclingImageView.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/AsyncTask.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/DiskLruCache.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageCache.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageFetcher.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageResizer.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageWorker.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/RecyclingBitmapDrawable.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/Utils.java delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-hdpi/ic_launcher.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-ldpi/ic_launcher.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-mdpi/ic_launcher.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-nodpi/empty_photo.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-xhdpi/ic_launcher.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable-xxhdpi/ic_launcher.png delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/drawable/photogrid_list_selector.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/layout/image_detail_fragment.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/layout/image_detail_pager.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/layout/image_grid_fragment.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/menu/main_menu.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values-large/dimens.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values-v11/styles.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values-xlarge/dimens.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values/colors.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values/dimens.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values/strings.xml delete mode 100644 samples/training/bitmapfun/BitmapFun/src/main/res/values/styles.xml delete mode 100644 samples/training/bitmapfun/README delete mode 100644 samples/training/bitmapfun/build.gradle delete mode 100644 samples/training/bitmapfun/local.properties.sample delete mode 100644 samples/training/bitmapfun/settings.gradle diff --git a/samples/training/bitmapfun/BitmapFun/build.gradle b/samples/training/bitmapfun/BitmapFun/build.gradle deleted file mode 100644 index c9782314d..000000000 --- a/samples/training/bitmapfun/BitmapFun/build.gradle +++ /dev/null @@ -1,27 +0,0 @@ -buildscript { - repositories { - mavenCentral() - } - dependencies { - classpath 'com.android.tools.build:gradle:0.6.+' - } -} -apply plugin: 'android' - -repositories { - mavenCentral() -} - -android { - compileSdkVersion 19 - buildToolsVersion "19.0.0" - - defaultConfig { - minSdkVersion 7 - targetSdkVersion 19 - } -} - -dependencies { - compile 'com.android.support:support-v4:19.0.+' -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/AndroidManifest.xml b/samples/training/bitmapfun/BitmapFun/src/main/AndroidManifest.xml deleted file mode 100644 index 9ca5cf50c..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/AndroidManifest.xml +++ /dev/null @@ -1,55 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/provider/Images.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/provider/Images.java deleted file mode 100644 index fcf4496bd..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/provider/Images.java +++ /dev/null @@ -1,245 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.provider; - -/** - * Some simple test data to use for this sample app. - */ -public class Images { - - /** - * This are PicasaWeb URLs and could potentially change. Ideally the PicasaWeb API should be - * used to fetch the URLs. - * - * Credit to Romain Guy for the photos: - * http://www.curious-creature.org/ - * https://plus.google.com/109538161516040592207/about - * http://www.flickr.com/photos/romainguy - */ - public final static String[] imageUrls = new String[] { - "https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg", - "https://lh4.googleusercontent.com/--dq8niRp7W4/URquVgmXvgI/AAAAAAAAAbs/-gnuLQfNnBA/s1024/A%252520Song%252520of%252520Ice%252520and%252520Fire.jpg", - "https://lh5.googleusercontent.com/-7qZeDtRKFKc/URquWZT1gOI/AAAAAAAAAbs/hqWgteyNXsg/s1024/Another%252520Rockaway%252520Sunset.jpg", - "https://lh3.googleusercontent.com/--L0Km39l5J8/URquXHGcdNI/AAAAAAAAAbs/3ZrSJNrSomQ/s1024/Antelope%252520Butte.jpg", - "https://lh6.googleusercontent.com/-8HO-4vIFnlw/URquZnsFgtI/AAAAAAAAAbs/WT8jViTF7vw/s1024/Antelope%252520Hallway.jpg", - "https://lh4.googleusercontent.com/-WIuWgVcU3Qw/URqubRVcj4I/AAAAAAAAAbs/YvbwgGjwdIQ/s1024/Antelope%252520Walls.jpg", - "https://lh6.googleusercontent.com/-UBmLbPELvoQ/URqucCdv0kI/AAAAAAAAAbs/IdNhr2VQoQs/s1024/Apre%2525CC%252580s%252520la%252520Pluie.jpg", - "https://lh3.googleusercontent.com/-s-AFpvgSeew/URquc6dF-JI/AAAAAAAAAbs/Mt3xNGRUd68/s1024/Backlit%252520Cloud.jpg", - "https://lh5.googleusercontent.com/-bvmif9a9YOQ/URquea3heHI/AAAAAAAAAbs/rcr6wyeQtAo/s1024/Bee%252520and%252520Flower.jpg", - "https://lh5.googleusercontent.com/-n7mdm7I7FGs/URqueT_BT-I/AAAAAAAAAbs/9MYmXlmpSAo/s1024/Bonzai%252520Rock%252520Sunset.jpg", - "https://lh6.googleusercontent.com/-4CN4X4t0M1k/URqufPozWzI/AAAAAAAAAbs/8wK41lg1KPs/s1024/Caterpillar.jpg", - "https://lh3.googleusercontent.com/-rrFnVC8xQEg/URqufdrLBaI/AAAAAAAAAbs/s69WYy_fl1E/s1024/Chess.jpg", - "https://lh5.googleusercontent.com/-WVpRptWH8Yw/URqugh-QmDI/AAAAAAAAAbs/E-MgBgtlUWU/s1024/Chihuly.jpg", - "https://lh5.googleusercontent.com/-0BDXkYmckbo/URquhKFW84I/AAAAAAAAAbs/ogQtHCTk2JQ/s1024/Closed%252520Door.jpg", - "https://lh3.googleusercontent.com/-PyggXXZRykM/URquh-kVvoI/AAAAAAAAAbs/hFtDwhtrHHQ/s1024/Colorado%252520River%252520Sunset.jpg", - "https://lh3.googleusercontent.com/-ZAs4dNZtALc/URquikvOCWI/AAAAAAAAAbs/DXz4h3dll1Y/s1024/Colors%252520of%252520Autumn.jpg", - "https://lh4.googleusercontent.com/-GztnWEIiMz8/URqukVCU7bI/AAAAAAAAAbs/jo2Hjv6MZ6M/s1024/Countryside.jpg", - "https://lh4.googleusercontent.com/-bEg9EZ9QoiM/URquklz3FGI/AAAAAAAAAbs/UUuv8Ac2BaE/s1024/Death%252520Valley%252520-%252520Dunes.jpg", - "https://lh6.googleusercontent.com/-ijQJ8W68tEE/URqulGkvFEI/AAAAAAAAAbs/zPXvIwi_rFw/s1024/Delicate%252520Arch.jpg", - "https://lh5.googleusercontent.com/-Oh8mMy2ieng/URqullDwehI/AAAAAAAAAbs/TbdeEfsaIZY/s1024/Despair.jpg", - "https://lh5.googleusercontent.com/-gl0y4UiAOlk/URqumC_KjBI/AAAAAAAAAbs/PM1eT7dn4oo/s1024/Eagle%252520Fall%252520Sunrise.jpg", - "https://lh3.googleusercontent.com/-hYYHd2_vXPQ/URqumtJa9eI/AAAAAAAAAbs/wAalXVkbSh0/s1024/Electric%252520Storm.jpg", - "https://lh5.googleusercontent.com/-PyY_yiyjPTo/URqunUOhHFI/AAAAAAAAAbs/azZoULNuJXc/s1024/False%252520Kiva.jpg", - "https://lh6.googleusercontent.com/-PYvLVdvXywk/URqunwd8hfI/AAAAAAAAAbs/qiMwgkFvf6I/s1024/Fitzgerald%252520Streaks.jpg", - 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"https://lh6.googleusercontent.com/-DOz5I2E2oMQ/URqvKMND1kI/AAAAAAAAAbs/Iqf0IsInleo/s240-c/Windmill%252520Sunrise.jpg", - "https://lh5.googleusercontent.com/-biyiyWcJ9MU/URqvKculiAI/AAAAAAAAAbs/jyPsCplJOpE/s240-c/Windmill.jpg", - "https://lh4.googleusercontent.com/-PDT167_xRdA/URqvK36mLcI/AAAAAAAAAbs/oi2ik9QseMI/s240-c/Windmills.jpg", - "https://lh5.googleusercontent.com/-kI_QdYx7VlU/URqvLXCB6gI/AAAAAAAAAbs/N31vlZ6u89o/s240-c/Yet%252520Another%252520Rockaway%252520Sunset.jpg", - "https://lh4.googleusercontent.com/-e9NHZ5k5MSs/URqvMIBZjtI/AAAAAAAAAbs/1fV810rDNfQ/s240-c/Yosemite%252520Tree.jpg", - }; -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailActivity.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailActivity.java deleted file mode 100644 index 05d7b03f0..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailActivity.java +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.ui; - -import android.annotation.TargetApi; -import android.app.ActionBar; -import android.os.Build.VERSION_CODES; -import android.os.Bundle; -import android.support.v4.app.Fragment; -import android.support.v4.app.FragmentActivity; -import android.support.v4.app.FragmentManager; -import android.support.v4.app.FragmentStatePagerAdapter; -import android.support.v4.app.NavUtils; -import android.support.v4.view.ViewPager; -import android.util.DisplayMetrics; -import android.view.Menu; -import android.view.MenuItem; -import android.view.View; -import android.view.View.OnClickListener; -import android.view.WindowManager.LayoutParams; -import android.widget.Toast; - -import com.example.android.bitmapfun.BuildConfig; -import com.example.android.bitmapfun.R; -import com.example.android.bitmapfun.provider.Images; -import com.example.android.bitmapfun.util.ImageCache; -import com.example.android.bitmapfun.util.ImageFetcher; -import com.example.android.bitmapfun.util.Utils; - -public class ImageDetailActivity extends FragmentActivity implements OnClickListener { - private static final String IMAGE_CACHE_DIR = "images"; - public static final String EXTRA_IMAGE = "extra_image"; - - private ImagePagerAdapter mAdapter; - private ImageFetcher mImageFetcher; - private ViewPager mPager; - - @TargetApi(VERSION_CODES.HONEYCOMB) - @Override - public void onCreate(Bundle savedInstanceState) { - if (BuildConfig.DEBUG) { - Utils.enableStrictMode(); - } - super.onCreate(savedInstanceState); - setContentView(R.layout.image_detail_pager); - - // Fetch screen height and width, to use as our max size when loading images as this - // activity runs full screen - final DisplayMetrics displayMetrics = new DisplayMetrics(); - getWindowManager().getDefaultDisplay().getMetrics(displayMetrics); - final int height = displayMetrics.heightPixels; - final int width = displayMetrics.widthPixels; - - // For this sample we'll use half of the longest width to resize our images. As the - // image scaling ensures the image is larger than this, we should be left with a - // resolution that is appropriate for both portrait and landscape. For best image quality - // we shouldn't divide by 2, but this will use more memory and require a larger memory - // cache. - final int longest = (height > width ? height : width) / 2; - - ImageCache.ImageCacheParams cacheParams = - new ImageCache.ImageCacheParams(this, IMAGE_CACHE_DIR); - cacheParams.setMemCacheSizePercent(0.25f); // Set memory cache to 25% of app memory - - // The ImageFetcher takes care of loading images into our ImageView children asynchronously - mImageFetcher = new ImageFetcher(this, longest); - mImageFetcher.addImageCache(getSupportFragmentManager(), cacheParams); - mImageFetcher.setImageFadeIn(false); - - // Set up ViewPager and backing adapter - mAdapter = new ImagePagerAdapter(getSupportFragmentManager(), Images.imageUrls.length); - mPager = (ViewPager) findViewById(R.id.pager); - mPager.setAdapter(mAdapter); - mPager.setPageMargin((int) getResources().getDimension(R.dimen.image_detail_pager_margin)); - mPager.setOffscreenPageLimit(2); - - // Set up activity to go full screen - getWindow().addFlags(LayoutParams.FLAG_FULLSCREEN); - - // Enable some additional newer visibility and ActionBar features to create a more - // immersive photo viewing experience - if (Utils.hasHoneycomb()) { - final ActionBar actionBar = getActionBar(); - - // Hide title text and set home as up - actionBar.setDisplayShowTitleEnabled(false); - actionBar.setDisplayHomeAsUpEnabled(true); - - // Hide and show the ActionBar as the visibility changes - mPager.setOnSystemUiVisibilityChangeListener( - new View.OnSystemUiVisibilityChangeListener() { - @Override - public void onSystemUiVisibilityChange(int vis) { - if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) { - actionBar.hide(); - } else { - actionBar.show(); - } - } - }); - - // Start low profile mode and hide ActionBar - mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); - actionBar.hide(); - } - - // Set the current item based on the extra passed in to this activity - final int extraCurrentItem = getIntent().getIntExtra(EXTRA_IMAGE, -1); - if (extraCurrentItem != -1) { - mPager.setCurrentItem(extraCurrentItem); - } - } - - @Override - public void onResume() { - super.onResume(); - mImageFetcher.setExitTasksEarly(false); - } - - @Override - protected void onPause() { - super.onPause(); - mImageFetcher.setExitTasksEarly(true); - mImageFetcher.flushCache(); - } - - @Override - protected void onDestroy() { - super.onDestroy(); - mImageFetcher.closeCache(); - } - - @Override - public boolean onOptionsItemSelected(MenuItem item) { - switch (item.getItemId()) { - case android.R.id.home: - NavUtils.navigateUpFromSameTask(this); - return true; - case R.id.clear_cache: - mImageFetcher.clearCache(); - Toast.makeText( - this, R.string.clear_cache_complete_toast,Toast.LENGTH_SHORT).show(); - return true; - } - return super.onOptionsItemSelected(item); - } - - @Override - public boolean onCreateOptionsMenu(Menu menu) { - getMenuInflater().inflate(R.menu.main_menu, menu); - return true; - } - - /** - * Called by the ViewPager child fragments to load images via the one ImageFetcher - */ - public ImageFetcher getImageFetcher() { - return mImageFetcher; - } - - /** - * The main adapter that backs the ViewPager. A subclass of FragmentStatePagerAdapter as there - * could be a large number of items in the ViewPager and we don't want to retain them all in - * memory at once but create/destroy them on the fly. - */ - private class ImagePagerAdapter extends FragmentStatePagerAdapter { - private final int mSize; - - public ImagePagerAdapter(FragmentManager fm, int size) { - super(fm); - mSize = size; - } - - @Override - public int getCount() { - return mSize; - } - - @Override - public Fragment getItem(int position) { - return ImageDetailFragment.newInstance(Images.imageUrls[position]); - } - } - - /** - * Set on the ImageView in the ViewPager children fragments, to enable/disable low profile mode - * when the ImageView is touched. - */ - @TargetApi(VERSION_CODES.HONEYCOMB) - @Override - public void onClick(View v) { - final int vis = mPager.getSystemUiVisibility(); - if ((vis & View.SYSTEM_UI_FLAG_LOW_PROFILE) != 0) { - mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE); - } else { - mPager.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailFragment.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailFragment.java deleted file mode 100644 index 9fff8a08a..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageDetailFragment.java +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.ui; - -import android.os.Bundle; -import android.support.v4.app.Fragment; -import android.view.LayoutInflater; -import android.view.View; -import android.view.View.OnClickListener; -import android.view.ViewGroup; -import android.widget.ImageView; - -import com.example.android.bitmapfun.R; -import com.example.android.bitmapfun.util.ImageFetcher; -import com.example.android.bitmapfun.util.ImageWorker; -import com.example.android.bitmapfun.util.Utils; - -/** - * This fragment will populate the children of the ViewPager from {@link ImageDetailActivity}. - */ -public class ImageDetailFragment extends Fragment { - private static final String IMAGE_DATA_EXTRA = "extra_image_data"; - private String mImageUrl; - private ImageView mImageView; - private ImageFetcher mImageFetcher; - - /** - * Factory method to generate a new instance of the fragment given an image number. - * - * @param imageUrl The image url to load - * @return A new instance of ImageDetailFragment with imageNum extras - */ - public static ImageDetailFragment newInstance(String imageUrl) { - final ImageDetailFragment f = new ImageDetailFragment(); - - final Bundle args = new Bundle(); - args.putString(IMAGE_DATA_EXTRA, imageUrl); - f.setArguments(args); - - return f; - } - - /** - * Empty constructor as per the Fragment documentation - */ - public ImageDetailFragment() {} - - /** - * Populate image using a url from extras, use the convenience factory method - * {@link ImageDetailFragment#newInstance(String)} to create this fragment. - */ - @Override - public void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - mImageUrl = getArguments() != null ? getArguments().getString(IMAGE_DATA_EXTRA) : null; - } - - @Override - public View onCreateView(LayoutInflater inflater, ViewGroup container, - Bundle savedInstanceState) { - // Inflate and locate the main ImageView - final View v = inflater.inflate(R.layout.image_detail_fragment, container, false); - mImageView = (ImageView) v.findViewById(R.id.imageView); - return v; - } - - @Override - public void onActivityCreated(Bundle savedInstanceState) { - super.onActivityCreated(savedInstanceState); - - // Use the parent activity to load the image asynchronously into the ImageView (so a single - // cache can be used over all pages in the ViewPager - if (ImageDetailActivity.class.isInstance(getActivity())) { - mImageFetcher = ((ImageDetailActivity) getActivity()).getImageFetcher(); - mImageFetcher.loadImage(mImageUrl, mImageView); - } - - // Pass clicks on the ImageView to the parent activity to handle - if (OnClickListener.class.isInstance(getActivity()) && Utils.hasHoneycomb()) { - mImageView.setOnClickListener((OnClickListener) getActivity()); - } - } - - @Override - public void onDestroy() { - super.onDestroy(); - if (mImageView != null) { - // Cancel any pending image work - ImageWorker.cancelWork(mImageView); - mImageView.setImageDrawable(null); - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridActivity.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridActivity.java deleted file mode 100644 index e7c7d1c43..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridActivity.java +++ /dev/null @@ -1,45 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.ui; - -import android.os.Bundle; -import android.support.v4.app.FragmentActivity; -import android.support.v4.app.FragmentTransaction; - -import com.example.android.bitmapfun.BuildConfig; -import com.example.android.bitmapfun.util.Utils; - -/** - * Simple FragmentActivity to hold the main {@link ImageGridFragment} and not much else. - */ -public class ImageGridActivity extends FragmentActivity { - private static final String TAG = "ImageGridActivity"; - - @Override - protected void onCreate(Bundle savedInstanceState) { - if (BuildConfig.DEBUG) { - Utils.enableStrictMode(); - } - super.onCreate(savedInstanceState); - - if (getSupportFragmentManager().findFragmentByTag(TAG) == null) { - final FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); - ft.add(android.R.id.content, new ImageGridFragment(), TAG); - ft.commit(); - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridFragment.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridFragment.java deleted file mode 100644 index ba4581aa1..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/ImageGridFragment.java +++ /dev/null @@ -1,332 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.ui; - -import android.annotation.TargetApi; -import android.app.ActivityOptions; -import android.content.Context; -import android.content.Intent; -import android.os.Build.VERSION_CODES; -import android.os.Bundle; -import android.support.v4.app.Fragment; -import android.util.Log; -import android.util.TypedValue; -import android.view.LayoutInflater; -import android.view.Menu; -import android.view.MenuInflater; -import android.view.MenuItem; -import android.view.View; -import android.view.ViewGroup; -import android.view.ViewGroup.LayoutParams; -import android.view.ViewTreeObserver; -import android.widget.AbsListView; -import android.widget.AdapterView; -import android.widget.BaseAdapter; -import android.widget.GridView; -import android.widget.ImageView; -import android.widget.Toast; - -import com.example.android.bitmapfun.BuildConfig; -import com.example.android.bitmapfun.R; -import com.example.android.bitmapfun.provider.Images; -import com.example.android.bitmapfun.util.ImageCache.ImageCacheParams; -import com.example.android.bitmapfun.util.ImageFetcher; -import com.example.android.bitmapfun.util.Utils; - -/** - * The main fragment that powers the ImageGridActivity screen. Fairly straight forward GridView - * implementation with the key addition being the ImageWorker class w/ImageCache to load children - * asynchronously, keeping the UI nice and smooth and caching thumbnails for quick retrieval. The - * cache is retained over configuration changes like orientation change so the images are populated - * quickly if, for example, the user rotates the device. - */ -public class ImageGridFragment extends Fragment implements AdapterView.OnItemClickListener { - private static final String TAG = "ImageGridFragment"; - private static final String IMAGE_CACHE_DIR = "thumbs"; - - private int mImageThumbSize; - private int mImageThumbSpacing; - private ImageAdapter mAdapter; - private ImageFetcher mImageFetcher; - - /** - * Empty constructor as per the Fragment documentation - */ - public ImageGridFragment() {} - - @Override - public void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - setHasOptionsMenu(true); - - mImageThumbSize = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size); - mImageThumbSpacing = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_spacing); - - mAdapter = new ImageAdapter(getActivity()); - - ImageCacheParams cacheParams = new ImageCacheParams(getActivity(), IMAGE_CACHE_DIR); - - cacheParams.setMemCacheSizePercent(0.25f); // Set memory cache to 25% of app memory - - // The ImageFetcher takes care of loading images into our ImageView children asynchronously - mImageFetcher = new ImageFetcher(getActivity(), mImageThumbSize); - mImageFetcher.setLoadingImage(R.drawable.empty_photo); - mImageFetcher.addImageCache(getActivity().getSupportFragmentManager(), cacheParams); - } - - @Override - public View onCreateView( - LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { - - final View v = inflater.inflate(R.layout.image_grid_fragment, container, false); - final GridView mGridView = (GridView) v.findViewById(R.id.gridView); - mGridView.setAdapter(mAdapter); - mGridView.setOnItemClickListener(this); - mGridView.setOnScrollListener(new AbsListView.OnScrollListener() { - @Override - public void onScrollStateChanged(AbsListView absListView, int scrollState) { - // Pause fetcher to ensure smoother scrolling when flinging - if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_FLING) { - // Before Honeycomb pause image loading on scroll to help with performance - if (!Utils.hasHoneycomb()) { - mImageFetcher.setPauseWork(true); - } - } else { - mImageFetcher.setPauseWork(false); - } - } - - @Override - public void onScroll(AbsListView absListView, int firstVisibleItem, - int visibleItemCount, int totalItemCount) { - } - }); - - // This listener is used to get the final width of the GridView and then calculate the - // number of columns and the width of each column. The width of each column is variable - // as the GridView has stretchMode=columnWidth. The column width is used to set the height - // of each view so we get nice square thumbnails. - mGridView.getViewTreeObserver().addOnGlobalLayoutListener( - new ViewTreeObserver.OnGlobalLayoutListener() { - @Override - public void onGlobalLayout() { - if (mAdapter.getNumColumns() == 0) { - final int numColumns = (int) Math.floor( - mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing)); - if (numColumns > 0) { - final int columnWidth = - (mGridView.getWidth() / numColumns) - mImageThumbSpacing; - mAdapter.setNumColumns(numColumns); - mAdapter.setItemHeight(columnWidth); - if (BuildConfig.DEBUG) { - Log.d(TAG, "onCreateView - numColumns set to " + numColumns); - } - if (Utils.hasJellyBean()) { - mGridView.getViewTreeObserver() - .removeOnGlobalLayoutListener(this); - } else { - mGridView.getViewTreeObserver() - .removeGlobalOnLayoutListener(this); - } - } - } - } - }); - - return v; - } - - @Override - public void onResume() { - super.onResume(); - mImageFetcher.setExitTasksEarly(false); - mAdapter.notifyDataSetChanged(); - } - - @Override - public void onPause() { - super.onPause(); - mImageFetcher.setPauseWork(false); - mImageFetcher.setExitTasksEarly(true); - mImageFetcher.flushCache(); - } - - @Override - public void onDestroy() { - super.onDestroy(); - mImageFetcher.closeCache(); - } - - @TargetApi(VERSION_CODES.JELLY_BEAN) - @Override - public void onItemClick(AdapterView parent, View v, int position, long id) { - final Intent i = new Intent(getActivity(), ImageDetailActivity.class); - i.putExtra(ImageDetailActivity.EXTRA_IMAGE, (int) id); - if (Utils.hasJellyBean()) { - // makeThumbnailScaleUpAnimation() looks kind of ugly here as the loading spinner may - // show plus the thumbnail image in GridView is cropped. so using - // makeScaleUpAnimation() instead. - ActivityOptions options = - ActivityOptions.makeScaleUpAnimation(v, 0, 0, v.getWidth(), v.getHeight()); - getActivity().startActivity(i, options.toBundle()); - } else { - startActivity(i); - } - } - - @Override - public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { - inflater.inflate(R.menu.main_menu, menu); - } - - @Override - public boolean onOptionsItemSelected(MenuItem item) { - switch (item.getItemId()) { - case R.id.clear_cache: - mImageFetcher.clearCache(); - Toast.makeText(getActivity(), R.string.clear_cache_complete_toast, - Toast.LENGTH_SHORT).show(); - return true; - } - return super.onOptionsItemSelected(item); - } - - /** - * The main adapter that backs the GridView. This is fairly standard except the number of - * columns in the GridView is used to create a fake top row of empty views as we use a - * transparent ActionBar and don't want the real top row of images to start off covered by it. - */ - private class ImageAdapter extends BaseAdapter { - - private final Context mContext; - private int mItemHeight = 0; - private int mNumColumns = 0; - private int mActionBarHeight = 0; - private GridView.LayoutParams mImageViewLayoutParams; - - public ImageAdapter(Context context) { - super(); - mContext = context; - mImageViewLayoutParams = new GridView.LayoutParams( - LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); - // Calculate ActionBar height - TypedValue tv = new TypedValue(); - if (context.getTheme().resolveAttribute( - android.R.attr.actionBarSize, tv, true)) { - mActionBarHeight = TypedValue.complexToDimensionPixelSize( - tv.data, context.getResources().getDisplayMetrics()); - } - } - - @Override - public int getCount() { - // If columns have yet to be determined, return no items - if (getNumColumns() == 0) { - return 0; - } - - // Size + number of columns for top empty row - return Images.imageThumbUrls.length + mNumColumns; - } - - @Override - public Object getItem(int position) { - return position < mNumColumns ? - null : Images.imageThumbUrls[position - mNumColumns]; - } - - @Override - public long getItemId(int position) { - return position < mNumColumns ? 0 : position - mNumColumns; - } - - @Override - public int getViewTypeCount() { - // Two types of views, the normal ImageView and the top row of empty views - return 2; - } - - @Override - public int getItemViewType(int position) { - return (position < mNumColumns) ? 1 : 0; - } - - @Override - public boolean hasStableIds() { - return true; - } - - @Override - public View getView(int position, View convertView, ViewGroup container) { - // First check if this is the top row - if (position < mNumColumns) { - if (convertView == null) { - convertView = new View(mContext); - } - // Set empty view with height of ActionBar - convertView.setLayoutParams(new AbsListView.LayoutParams( - ViewGroup.LayoutParams.MATCH_PARENT, mActionBarHeight)); - return convertView; - } - - // Now handle the main ImageView thumbnails - ImageView imageView; - if (convertView == null) { // if it's not recycled, instantiate and initialize - imageView = new RecyclingImageView(mContext); - imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); - imageView.setLayoutParams(mImageViewLayoutParams); - } else { // Otherwise re-use the converted view - imageView = (ImageView) convertView; - } - - // Check the height matches our calculated column width - if (imageView.getLayoutParams().height != mItemHeight) { - imageView.setLayoutParams(mImageViewLayoutParams); - } - - // Finally load the image asynchronously into the ImageView, this also takes care of - // setting a placeholder image while the background thread runs - mImageFetcher.loadImage(Images.imageThumbUrls[position - mNumColumns], imageView); - return imageView; - } - - /** - * Sets the item height. Useful for when we know the column width so the height can be set - * to match. - * - * @param height - */ - public void setItemHeight(int height) { - if (height == mItemHeight) { - return; - } - mItemHeight = height; - mImageViewLayoutParams = - new GridView.LayoutParams(LayoutParams.MATCH_PARENT, mItemHeight); - mImageFetcher.setImageSize(height); - notifyDataSetChanged(); - } - - public void setNumColumns(int numColumns) { - mNumColumns = numColumns; - } - - public int getNumColumns() { - return mNumColumns; - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/RecyclingImageView.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/RecyclingImageView.java deleted file mode 100644 index 1bcc01465..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/ui/RecyclingImageView.java +++ /dev/null @@ -1,89 +0,0 @@ -/* - * Copyright (C) 2013 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.ui; - -import android.content.Context; -import android.graphics.drawable.Drawable; -import android.graphics.drawable.LayerDrawable; -import android.util.AttributeSet; -import android.widget.ImageView; - -import com.example.android.bitmapfun.util.RecyclingBitmapDrawable; - -/** - * Sub-class of ImageView which automatically notifies the drawable when it is - * being displayed. - */ -public class RecyclingImageView extends ImageView { - - public RecyclingImageView(Context context) { - super(context); - } - - public RecyclingImageView(Context context, AttributeSet attrs) { - super(context, attrs); - } - - /** - * @see android.widget.ImageView#onDetachedFromWindow() - */ - @Override - protected void onDetachedFromWindow() { - // This has been detached from Window, so clear the drawable - setImageDrawable(null); - - super.onDetachedFromWindow(); - } - - /** - * @see android.widget.ImageView#setImageDrawable(android.graphics.drawable.Drawable) - */ - @Override - public void setImageDrawable(Drawable drawable) { - // Keep hold of previous Drawable - final Drawable previousDrawable = getDrawable(); - - // Call super to set new Drawable - super.setImageDrawable(drawable); - - // Notify new Drawable that it is being displayed - notifyDrawable(drawable, true); - - // Notify old Drawable so it is no longer being displayed - notifyDrawable(previousDrawable, false); - } - - /** - * Notifies the drawable that it's displayed state has changed. - * - * @param drawable - * @param isDisplayed - */ - private static void notifyDrawable(Drawable drawable, final boolean isDisplayed) { - if (drawable instanceof RecyclingBitmapDrawable) { - // The drawable is a CountingBitmapDrawable, so notify it - ((RecyclingBitmapDrawable) drawable).setIsDisplayed(isDisplayed); - } else if (drawable instanceof LayerDrawable) { - // The drawable is a LayerDrawable, so recurse on each layer - LayerDrawable layerDrawable = (LayerDrawable) drawable; - for (int i = 0, z = layerDrawable.getNumberOfLayers(); i < z; i++) { - notifyDrawable(layerDrawable.getDrawable(i), isDisplayed); - } - } - } - -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/AsyncTask.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/AsyncTask.java deleted file mode 100644 index 018ce1a23..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/AsyncTask.java +++ /dev/null @@ -1,693 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.annotation.TargetApi; -import android.os.Handler; -import android.os.Message; -import android.os.Process; - -import java.util.ArrayDeque; -import java.util.concurrent.BlockingQueue; -import java.util.concurrent.Callable; -import java.util.concurrent.CancellationException; -import java.util.concurrent.Executor; -import java.util.concurrent.ExecutionException; -import java.util.concurrent.Executors; -import java.util.concurrent.FutureTask; -import java.util.concurrent.LinkedBlockingQueue; -import java.util.concurrent.ThreadFactory; -import java.util.concurrent.ThreadPoolExecutor; -import java.util.concurrent.TimeUnit; -import java.util.concurrent.TimeoutException; -import java.util.concurrent.atomic.AtomicBoolean; -import java.util.concurrent.atomic.AtomicInteger; - -/** - * ************************************* - * Copied from JB release framework: - * https://android.googlesource.com/platform/frameworks/base/+/jb-release/core/java/android/os/AsyncTask.java - * - * so that threading behavior on all OS versions is the same and we can tweak behavior by using - * executeOnExecutor() if needed. - * - * There are 3 changes in this copy of AsyncTask: - * -pre-HC a single thread executor is used for serial operation - * (Executors.newSingleThreadExecutor) and is the default - * -the default THREAD_POOL_EXECUTOR was changed to use DiscardOldestPolicy - * -a new fixed thread pool called DUAL_THREAD_EXECUTOR was added - * ************************************* - * - *

AsyncTask enables proper and easy use of the UI thread. This class allows to - * perform background operations and publish results on the UI thread without - * having to manipulate threads and/or handlers.

- * - *

AsyncTask is designed to be a helper class around {@link Thread} and {@link Handler} - * and does not constitute a generic threading framework. AsyncTasks should ideally be - * used for short operations (a few seconds at the most.) If you need to keep threads - * running for long periods of time, it is highly recommended you use the various APIs - * provided by the java.util.concurrent pacakge such as {@link Executor}, - * {@link ThreadPoolExecutor} and {@link FutureTask}.

- * - *

An asynchronous task is defined by a computation that runs on a background thread and - * whose result is published on the UI thread. An asynchronous task is defined by 3 generic - * types, called Params, Progress and Result, - * and 4 steps, called onPreExecute, doInBackground, - * onProgressUpdate and onPostExecute.

- * - *
- *

Developer Guides

- *

For more information about using tasks and threads, read the - * Processes and - * Threads developer guide.

- *
- * - *

Usage

- *

AsyncTask must be subclassed to be used. The subclass will override at least - * one method ({@link #doInBackground}), and most often will override a - * second one ({@link #onPostExecute}.)

- * - *

Here is an example of subclassing:

- * 
- * private class DownloadFilesTask extends AsyncTask<URL, Integer, Long> {
- *     protected Long doInBackground(URL... urls) {
- *         int count = urls.length;
- *         long totalSize = 0;
- *         for (int i = 0; i < count; i++) {
- *             totalSize += Downloader.downloadFile(urls[i]);
- *             publishProgress((int) ((i / (float) count) * 100));
- *             // Escape early if cancel() is called
- *             if (isCancelled()) break;
- *         }
- *         return totalSize;
- *     }
- *
- *     protected void onProgressUpdate(Integer... progress) {
- *         setProgressPercent(progress[0]);
- *     }
- *
- *     protected void onPostExecute(Long result) {
- *         showDialog("Downloaded " + result + " bytes");
- *     }
- * }
- *
- * - *

Once created, a task is executed very simply:

- * 
- * new DownloadFilesTask().execute(url1, url2, url3);
- *
- * - *

AsyncTask's generic types

- *

The three types used by an asynchronous task are the following:

- *
    - *
  1. Params, the type of the parameters sent to the task upon - * execution.
    2. - *
  2. Progress, the type of the progress units published during - * the background computation.
    3. - *
  3. Result, the type of the result of the background - * computation.
    4. - *
- *

Not all types are always used by an asynchronous task. To mark a type as unused, - * simply use the type {@link Void}:

- * 
- * private class MyTask extends AsyncTask<Void, Void, Void> { ... }
- *
- * - *

The 4 steps

- *

When an asynchronous task is executed, the task goes through 4 steps:

- *
    - *
  1. {@link #onPreExecute()}, invoked on the UI thread immediately after the task - * is executed. This step is normally used to setup the task, for instance by - * showing a progress bar in the user interface.
    2. - *
  2. {@link #doInBackground}, invoked on the background thread - * immediately after {@link #onPreExecute()} finishes executing. This step is used - * to perform background computation that can take a long time. The parameters - * of the asynchronous task are passed to this step. The result of the computation must - * be returned by this step and will be passed back to the last step. This step - * can also use {@link #publishProgress} to publish one or more units - * of progress. These values are published on the UI thread, in the - * {@link #onProgressUpdate} step.
    3. - *
  3. {@link #onProgressUpdate}, invoked on the UI thread after a - * call to {@link #publishProgress}. The timing of the execution is - * undefined. This method is used to display any form of progress in the user - * interface while the background computation is still executing. For instance, - * it can be used to animate a progress bar or show logs in a text field.
    4. - *
  4. {@link #onPostExecute}, invoked on the UI thread after the background - * computation finishes. The result of the background computation is passed to - * this step as a parameter.
    5. - *
- * - *

Cancelling a task

- *

A task can be cancelled at any time by invoking {@link #cancel(boolean)}. Invoking - * this method will cause subsequent calls to {@link #isCancelled()} to return true. - * After invoking this method, {@link #onCancelled(Object)}, instead of - * {@link #onPostExecute(Object)} will be invoked after {@link #doInBackground(Object[])} - * returns. To ensure that a task is cancelled as quickly as possible, you should always - * check the return value of {@link #isCancelled()} periodically from - * {@link #doInBackground(Object[])}, if possible (inside a loop for instance.)

- * - *

Threading rules

- *

There are a few threading rules that must be followed for this class to - * work properly:

- * - * - *

Memory observability

- *

AsyncTask guarantees that all callback calls are synchronized in such a way that the following - * operations are safe without explicit synchronizations.

- * - * - *

Order of execution

- *

When first introduced, AsyncTasks were executed serially on a single background - * thread. Starting with {@link android.os.Build.VERSION_CODES#DONUT}, this was changed - * to a pool of threads allowing multiple tasks to operate in parallel. Starting with - * {@link android.os.Build.VERSION_CODES#HONEYCOMB}, tasks are executed on a single - * thread to avoid common application errors caused by parallel execution.

- *

If you truly want parallel execution, you can invoke - * {@link #executeOnExecutor(java.util.concurrent.Executor, Object[])} with - * {@link #THREAD_POOL_EXECUTOR}.

- */ -public abstract class AsyncTask { - private static final String LOG_TAG = "AsyncTask"; - - private static final int CORE_POOL_SIZE = 5; - private static final int MAXIMUM_POOL_SIZE = 128; - private static final int KEEP_ALIVE = 1; - - private static final ThreadFactory sThreadFactory = new ThreadFactory() { - private final AtomicInteger mCount = new AtomicInteger(1); - - public Thread newThread(Runnable r) { - return new Thread(r, "AsyncTask #" + mCount.getAndIncrement()); - } - }; - - private static final BlockingQueue sPoolWorkQueue = - new LinkedBlockingQueue(10); - - /** - * An {@link Executor} that can be used to execute tasks in parallel. - */ - public static final Executor THREAD_POOL_EXECUTOR - = new ThreadPoolExecutor(CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE, - TimeUnit.SECONDS, sPoolWorkQueue, sThreadFactory, - new ThreadPoolExecutor.DiscardOldestPolicy()); - - /** - * An {@link Executor} that executes tasks one at a time in serial - * order. This serialization is global to a particular process. - */ - public static final Executor SERIAL_EXECUTOR = Utils.hasHoneycomb() ? new SerialExecutor() : - Executors.newSingleThreadExecutor(sThreadFactory); - - public static final Executor DUAL_THREAD_EXECUTOR = - Executors.newFixedThreadPool(2, sThreadFactory); - - private static final int MESSAGE_POST_RESULT = 0x1; - private static final int MESSAGE_POST_PROGRESS = 0x2; - - private static final InternalHandler sHandler = new InternalHandler(); - - private static volatile Executor sDefaultExecutor = SERIAL_EXECUTOR; - private final WorkerRunnable mWorker; - private final FutureTask mFuture; - - private volatile Status mStatus = Status.PENDING; - - private final AtomicBoolean mCancelled = new AtomicBoolean(); - private final AtomicBoolean mTaskInvoked = new AtomicBoolean(); - - @TargetApi(11) - private static class SerialExecutor implements Executor { - final ArrayDeque mTasks = new ArrayDeque(); - Runnable mActive; - - public synchronized void execute(final Runnable r) { - mTasks.offer(new Runnable() { - public void run() { - try { - r.run(); - } finally { - scheduleNext(); - } - } - }); - if (mActive == null) { - scheduleNext(); - } - } - - protected synchronized void scheduleNext() { - if ((mActive = mTasks.poll()) != null) { - THREAD_POOL_EXECUTOR.execute(mActive); - } - } - } - - /** - * Indicates the current status of the task. Each status will be set only once - * during the lifetime of a task. - */ - public enum Status { - /** - * Indicates that the task has not been executed yet. - */ - PENDING, - /** - * Indicates that the task is running. - */ - RUNNING, - /** - * Indicates that {@link AsyncTask#onPostExecute} has finished. - */ - FINISHED, - } - - /** @hide Used to force static handler to be created. */ - public static void init() { - sHandler.getLooper(); - } - - /** @hide */ - public static void setDefaultExecutor(Executor exec) { - sDefaultExecutor = exec; - } - - /** - * Creates a new asynchronous task. This constructor must be invoked on the UI thread. - */ - public AsyncTask() { - mWorker = new WorkerRunnable() { - public Result call() throws Exception { - mTaskInvoked.set(true); - - Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); - //noinspection unchecked - return postResult(doInBackground(mParams)); - } - }; - - mFuture = new FutureTask(mWorker) { - @Override - protected void done() { - try { - postResultIfNotInvoked(get()); - } catch (InterruptedException e) { - android.util.Log.w(LOG_TAG, e); - } catch (ExecutionException e) { - throw new RuntimeException("An error occured while executing doInBackground()", - e.getCause()); - } catch (CancellationException e) { - postResultIfNotInvoked(null); - } - } - }; - } - - private void postResultIfNotInvoked(Result result) { - final boolean wasTaskInvoked = mTaskInvoked.get(); - if (!wasTaskInvoked) { - postResult(result); - } - } - - private Result postResult(Result result) { - @SuppressWarnings("unchecked") - Message message = sHandler.obtainMessage(MESSAGE_POST_RESULT, - new AsyncTaskResult(this, result)); - message.sendToTarget(); - return result; - } - - /** - * Returns the current status of this task. - * - * @return The current status. - */ - public final Status getStatus() { - return mStatus; - } - - /** - * Override this method to perform a computation on a background thread. The - * specified parameters are the parameters passed to {@link #execute} - * by the caller of this task. - * - * This method can call {@link #publishProgress} to publish updates - * on the UI thread. - * - * @param params The parameters of the task. - * - * @return A result, defined by the subclass of this task. - * - * @see #onPreExecute() - * @see #onPostExecute - * @see #publishProgress - */ - protected abstract Result doInBackground(Params... params); - - /** - * Runs on the UI thread before {@link #doInBackground}. - * - * @see #onPostExecute - * @see #doInBackground - */ - protected void onPreExecute() { - } - - /** - *

Runs on the UI thread after {@link #doInBackground}. The - * specified result is the value returned by {@link #doInBackground}.

- * - *

This method won't be invoked if the task was cancelled.

- * - * @param result The result of the operation computed by {@link #doInBackground}. - * - * @see #onPreExecute - * @see #doInBackground - * @see #onCancelled(Object) - */ - @SuppressWarnings({"UnusedDeclaration"}) - protected void onPostExecute(Result result) { - } - - /** - * Runs on the UI thread after {@link #publishProgress} is invoked. - * The specified values are the values passed to {@link #publishProgress}. - * - * @param values The values indicating progress. - * - * @see #publishProgress - * @see #doInBackground - */ - @SuppressWarnings({"UnusedDeclaration"}) - protected void onProgressUpdate(Progress... values) { - } - - /** - *

Runs on the UI thread after {@link #cancel(boolean)} is invoked and - * {@link #doInBackground(Object[])} has finished.

- * - *

The default implementation simply invokes {@link #onCancelled()} and - * ignores the result. If you write your own implementation, do not call - * super.onCancelled(result).

- * - * @param result The result, if any, computed in - * {@link #doInBackground(Object[])}, can be null - * - * @see #cancel(boolean) - * @see #isCancelled() - */ - @SuppressWarnings({"UnusedParameters"}) - protected void onCancelled(Result result) { - onCancelled(); - } - - /** - *

Applications should preferably override {@link #onCancelled(Object)}. - * This method is invoked by the default implementation of - * {@link #onCancelled(Object)}.

- * - *

Runs on the UI thread after {@link #cancel(boolean)} is invoked and - * {@link #doInBackground(Object[])} has finished.

- * - * @see #onCancelled(Object) - * @see #cancel(boolean) - * @see #isCancelled() - */ - protected void onCancelled() { - } - - /** - * Returns true if this task was cancelled before it completed - * normally. If you are calling {@link #cancel(boolean)} on the task, - * the value returned by this method should be checked periodically from - * {@link #doInBackground(Object[])} to end the task as soon as possible. - * - * @return true if task was cancelled before it completed - * - * @see #cancel(boolean) - */ - public final boolean isCancelled() { - return mCancelled.get(); - } - - /** - *

Attempts to cancel execution of this task. This attempt will - * fail if the task has already completed, already been cancelled, - * or could not be cancelled for some other reason. If successful, - * and this task has not started when cancel is called, - * this task should never run. If the task has already started, - * then the mayInterruptIfRunning parameter determines - * whether the thread executing this task should be interrupted in - * an attempt to stop the task.

- * - *

Calling this method will result in {@link #onCancelled(Object)} being - * invoked on the UI thread after {@link #doInBackground(Object[])} - * returns. Calling this method guarantees that {@link #onPostExecute(Object)} - * is never invoked. After invoking this method, you should check the - * value returned by {@link #isCancelled()} periodically from - * {@link #doInBackground(Object[])} to finish the task as early as - * possible.

- * - * @param mayInterruptIfRunning true if the thread executing this - * task should be interrupted; otherwise, in-progress tasks are allowed - * to complete. - * - * @return false if the task could not be cancelled, - * typically because it has already completed normally; - * true otherwise - * - * @see #isCancelled() - * @see #onCancelled(Object) - */ - public final boolean cancel(boolean mayInterruptIfRunning) { - mCancelled.set(true); - return mFuture.cancel(mayInterruptIfRunning); - } - - /** - * Waits if necessary for the computation to complete, and then - * retrieves its result. - * - * @return The computed result. - * - * @throws CancellationException If the computation was cancelled. - * @throws ExecutionException If the computation threw an exception. - * @throws InterruptedException If the current thread was interrupted - * while waiting. - */ - public final Result get() throws InterruptedException, ExecutionException { - return mFuture.get(); - } - - /** - * Waits if necessary for at most the given time for the computation - * to complete, and then retrieves its result. - * - * @param timeout Time to wait before cancelling the operation. - * @param unit The time unit for the timeout. - * - * @return The computed result. - * - * @throws CancellationException If the computation was cancelled. - * @throws ExecutionException If the computation threw an exception. - * @throws InterruptedException If the current thread was interrupted - * while waiting. - * @throws TimeoutException If the wait timed out. - */ - public final Result get(long timeout, TimeUnit unit) throws InterruptedException, - ExecutionException, TimeoutException { - return mFuture.get(timeout, unit); - } - - /** - * Executes the task with the specified parameters. The task returns - * itself (this) so that the caller can keep a reference to it. - * - *

Note: this function schedules the task on a queue for a single background - * thread or pool of threads depending on the platform version. When first - * introduced, AsyncTasks were executed serially on a single background thread. - * Starting with {@link android.os.Build.VERSION_CODES#DONUT}, this was changed - * to a pool of threads allowing multiple tasks to operate in parallel. Starting - * {@link android.os.Build.VERSION_CODES#HONEYCOMB}, tasks are back to being - * executed on a single thread to avoid common application errors caused - * by parallel execution. If you truly want parallel execution, you can use - * the {@link #executeOnExecutor} version of this method - * with {@link #THREAD_POOL_EXECUTOR}; however, see commentary there for warnings - * on its use. - * - *

This method must be invoked on the UI thread. - * - * @param params The parameters of the task. - * - * @return This instance of AsyncTask. - * - * @throws IllegalStateException If {@link #getStatus()} returns either - * {@link AsyncTask.Status#RUNNING} or {@link AsyncTask.Status#FINISHED}. - * - * @see #executeOnExecutor(java.util.concurrent.Executor, Object[]) - * @see #execute(Runnable) - */ - public final AsyncTask execute(Params... params) { - return executeOnExecutor(sDefaultExecutor, params); - } - - /** - * Executes the task with the specified parameters. The task returns - * itself (this) so that the caller can keep a reference to it. - * - *

This method is typically used with {@link #THREAD_POOL_EXECUTOR} to - * allow multiple tasks to run in parallel on a pool of threads managed by - * AsyncTask, however you can also use your own {@link Executor} for custom - * behavior. - * - *

Warning: Allowing multiple tasks to run in parallel from - * a thread pool is generally not what one wants, because the order - * of their operation is not defined. For example, if these tasks are used - * to modify any state in common (such as writing a file due to a button click), - * there are no guarantees on the order of the modifications. - * Without careful work it is possible in rare cases for the newer version - * of the data to be over-written by an older one, leading to obscure data - * loss and stability issues. Such changes are best - * executed in serial; to guarantee such work is serialized regardless of - * platform version you can use this function with {@link #SERIAL_EXECUTOR}. - * - *

This method must be invoked on the UI thread. - * - * @param exec The executor to use. {@link #THREAD_POOL_EXECUTOR} is available as a - * convenient process-wide thread pool for tasks that are loosely coupled. - * @param params The parameters of the task. - * - * @return This instance of AsyncTask. - * - * @throws IllegalStateException If {@link #getStatus()} returns either - * {@link AsyncTask.Status#RUNNING} or {@link AsyncTask.Status#FINISHED}. - * - * @see #execute(Object[]) - */ - public final AsyncTask executeOnExecutor(Executor exec, - Params... params) { - if (mStatus != Status.PENDING) { - switch (mStatus) { - case RUNNING: - throw new IllegalStateException("Cannot execute task:" - + " the task is already running."); - case FINISHED: - throw new IllegalStateException("Cannot execute task:" - + " the task has already been executed " - + "(a task can be executed only once)"); - } - } - - mStatus = Status.RUNNING; - - onPreExecute(); - - mWorker.mParams = params; - exec.execute(mFuture); - - return this; - } - - /** - * Convenience version of {@link #execute(Object...)} for use with - * a simple Runnable object. See {@link #execute(Object[])} for more - * information on the order of execution. - * - * @see #execute(Object[]) - * @see #executeOnExecutor(java.util.concurrent.Executor, Object[]) - */ - public static void execute(Runnable runnable) { - sDefaultExecutor.execute(runnable); - } - - /** - * This method can be invoked from {@link #doInBackground} to - * publish updates on the UI thread while the background computation is - * still running. Each call to this method will trigger the execution of - * {@link #onProgressUpdate} on the UI thread. - * - * {@link #onProgressUpdate} will note be called if the task has been - * canceled. - * - * @param values The progress values to update the UI with. - * - * @see #onProgressUpdate - * @see #doInBackground - */ - protected final void publishProgress(Progress... values) { - if (!isCancelled()) { - sHandler.obtainMessage(MESSAGE_POST_PROGRESS, - new AsyncTaskResult(this, values)).sendToTarget(); - } - } - - private void finish(Result result) { - if (isCancelled()) { - onCancelled(result); - } else { - onPostExecute(result); - } - mStatus = Status.FINISHED; - } - - private static class InternalHandler extends Handler { - @SuppressWarnings({"unchecked", "RawUseOfParameterizedType"}) - @Override - public void handleMessage(Message msg) { - AsyncTaskResult result = (AsyncTaskResult) msg.obj; - switch (msg.what) { - case MESSAGE_POST_RESULT: - // There is only one result - result.mTask.finish(result.mData[0]); - break; - case MESSAGE_POST_PROGRESS: - result.mTask.onProgressUpdate(result.mData); - break; - } - } - } - - private static abstract class WorkerRunnable implements Callable { - Params[] mParams; - } - - @SuppressWarnings({"RawUseOfParameterizedType"}) - private static class AsyncTaskResult { - final AsyncTask mTask; - final Data[] mData; - - AsyncTaskResult(AsyncTask task, Data... data) { - mTask = task; - mData = data; - } - } -} \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/DiskLruCache.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/DiskLruCache.java deleted file mode 100644 index 26cdbd781..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/DiskLruCache.java +++ /dev/null @@ -1,953 +0,0 @@ -/* - * Copyright (C) 2011 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import java.io.BufferedInputStream; -import java.io.BufferedWriter; -import java.io.Closeable; -import java.io.EOFException; -import java.io.File; -import java.io.FileInputStream; -import java.io.FileNotFoundException; -import java.io.FileOutputStream; -import java.io.FileWriter; -import java.io.FilterOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.OutputStream; -import java.io.OutputStreamWriter; -import java.io.Reader; -import java.io.StringWriter; -import java.io.Writer; -import java.lang.reflect.Array; -import java.nio.charset.Charset; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Iterator; -import java.util.LinkedHashMap; -import java.util.Map; -import java.util.concurrent.Callable; -import java.util.concurrent.ExecutorService; -import java.util.concurrent.LinkedBlockingQueue; -import java.util.concurrent.ThreadPoolExecutor; -import java.util.concurrent.TimeUnit; - -/** - ****************************************************************************** - * Taken from the JB source code, can be found in: - * libcore/luni/src/main/java/libcore/io/DiskLruCache.java - * or direct link: - * https://android.googlesource.com/platform/libcore/+/android-4.1.1_r1/luni/src/main/java/libcore/io/DiskLruCache.java - ****************************************************************************** - * - * A cache that uses a bounded amount of space on a filesystem. Each cache - * entry has a string key and a fixed number of values. Values are byte - * sequences, accessible as streams or files. Each value must be between {@code - * 0} and {@code Integer.MAX_VALUE} bytes in length. - * - *

The cache stores its data in a directory on the filesystem. This - * directory must be exclusive to the cache; the cache may delete or overwrite - * files from its directory. It is an error for multiple processes to use the - * same cache directory at the same time. - * - *

This cache limits the number of bytes that it will store on the - * filesystem. When the number of stored bytes exceeds the limit, the cache will - * remove entries in the background until the limit is satisfied. The limit is - * not strict: the cache may temporarily exceed it while waiting for files to be - * deleted. The limit does not include filesystem overhead or the cache - * journal so space-sensitive applications should set a conservative limit. - * - *

Clients call {@link #edit} to create or update the values of an entry. An - * entry may have only one editor at one time; if a value is not available to be - * edited then {@link #edit} will return null. - *

    - *
  • When an entry is being created it is necessary to - * supply a full set of values; the empty value should be used as a - * placeholder if necessary. - *
  • When an entry is being edited, it is not necessary - * to supply data for every value; values default to their previous - * value. - *
- * Every {@link #edit} call must be matched by a call to {@link Editor#commit} - * or {@link Editor#abort}. Committing is atomic: a read observes the full set - * of values as they were before or after the commit, but never a mix of values. - * - *

Clients call {@link #get} to read a snapshot of an entry. The read will - * observe the value at the time that {@link #get} was called. Updates and - * removals after the call do not impact ongoing reads. - * - *

This class is tolerant of some I/O errors. If files are missing from the - * filesystem, the corresponding entries will be dropped from the cache. If - * an error occurs while writing a cache value, the edit will fail silently. - * Callers should handle other problems by catching {@code IOException} and - * responding appropriately. - */ -public final class DiskLruCache implements Closeable { - static final String JOURNAL_FILE = "journal"; - static final String JOURNAL_FILE_TMP = "journal.tmp"; - static final String MAGIC = "libcore.io.DiskLruCache"; - static final String VERSION_1 = "1"; - static final long ANY_SEQUENCE_NUMBER = -1; - private static final String CLEAN = "CLEAN"; - private static final String DIRTY = "DIRTY"; - private static final String REMOVE = "REMOVE"; - private static final String READ = "READ"; - - private static final Charset UTF_8 = Charset.forName("UTF-8"); - private static final int IO_BUFFER_SIZE = 8 * 1024; - - /* - * This cache uses a journal file named "journal". A typical journal file - * looks like this: - * libcore.io.DiskLruCache - * 1 - * 100 - * 2 - * - * CLEAN 3400330d1dfc7f3f7f4b8d4d803dfcf6 832 21054 - * DIRTY 335c4c6028171cfddfbaae1a9c313c52 - * CLEAN 335c4c6028171cfddfbaae1a9c313c52 3934 2342 - * REMOVE 335c4c6028171cfddfbaae1a9c313c52 - * DIRTY 1ab96a171faeeee38496d8b330771a7a - * CLEAN 1ab96a171faeeee38496d8b330771a7a 1600 234 - * READ 335c4c6028171cfddfbaae1a9c313c52 - * READ 3400330d1dfc7f3f7f4b8d4d803dfcf6 - * - * The first five lines of the journal form its header. They are the - * constant string "libcore.io.DiskLruCache", the disk cache's version, - * the application's version, the value count, and a blank line. - * - * Each of the subsequent lines in the file is a record of the state of a - * cache entry. Each line contains space-separated values: a state, a key, - * and optional state-specific values. - * o DIRTY lines track that an entry is actively being created or updated. - * Every successful DIRTY action should be followed by a CLEAN or REMOVE - * action. DIRTY lines without a matching CLEAN or REMOVE indicate that - * temporary files may need to be deleted. - * o CLEAN lines track a cache entry that has been successfully published - * and may be read. A publish line is followed by the lengths of each of - * its values. - * o READ lines track accesses for LRU. - * o REMOVE lines track entries that have been deleted. - * - * The journal file is appended to as cache operations occur. The journal may - * occasionally be compacted by dropping redundant lines. A temporary file named - * "journal.tmp" will be used during compaction; that file should be deleted if - * it exists when the cache is opened. - */ - - private final File directory; - private final File journalFile; - private final File journalFileTmp; - private final int appVersion; - private final long maxSize; - private final int valueCount; - private long size = 0; - private Writer journalWriter; - private final LinkedHashMap lruEntries - = new LinkedHashMap(0, 0.75f, true); - private int redundantOpCount; - - /** - * To differentiate between old and current snapshots, each entry is given - * a sequence number each time an edit is committed. A snapshot is stale if - * its sequence number is not equal to its entry's sequence number. - */ - private long nextSequenceNumber = 0; - - /* From java.util.Arrays */ - @SuppressWarnings("unchecked") - private static T[] copyOfRange(T[] original, int start, int end) { - final int originalLength = original.length; // For exception priority compatibility. - if (start > end) { - throw new IllegalArgumentException(); - } - if (start < 0 || start > originalLength) { - throw new ArrayIndexOutOfBoundsException(); - } - final int resultLength = end - start; - final int copyLength = Math.min(resultLength, originalLength - start); - final T[] result = (T[]) Array - .newInstance(original.getClass().getComponentType(), resultLength); - System.arraycopy(original, start, result, 0, copyLength); - return result; - } - - /** - * Returns the remainder of 'reader' as a string, closing it when done. - */ - public static String readFully(Reader reader) throws IOException { - try { - StringWriter writer = new StringWriter(); - char[] buffer = new char[1024]; - int count; - while ((count = reader.read(buffer)) != -1) { - writer.write(buffer, 0, count); - } - return writer.toString(); - } finally { - reader.close(); - } - } - - /** - * Returns the ASCII characters up to but not including the next "\r\n", or - * "\n". - * - * @throws java.io.EOFException if the stream is exhausted before the next newline - * character. - */ - public static String readAsciiLine(InputStream in) throws IOException { - // TODO: support UTF-8 here instead - - StringBuilder result = new StringBuilder(80); - while (true) { - int c = in.read(); - if (c == -1) { - throw new EOFException(); - } else if (c == '\n') { - break; - } - - result.append((char) c); - } - int length = result.length(); - if (length > 0 && result.charAt(length - 1) == '\r') { - result.setLength(length - 1); - } - return result.toString(); - } - - /** - * Closes 'closeable', ignoring any checked exceptions. Does nothing if 'closeable' is null. - */ - public static void closeQuietly(Closeable closeable) { - if (closeable != null) { - try { - closeable.close(); - } catch (RuntimeException rethrown) { - throw rethrown; - } catch (Exception ignored) { - } - } - } - - /** - * Recursively delete everything in {@code dir}. - */ - // TODO: this should specify paths as Strings rather than as Files - public static void deleteContents(File dir) throws IOException { - File[] files = dir.listFiles(); - if (files == null) { - throw new IllegalArgumentException("not a directory: " + dir); - } - for (File file : files) { - if (file.isDirectory()) { - deleteContents(file); - } - if (!file.delete()) { - throw new IOException("failed to delete file: " + file); - } - } - } - - /** This cache uses a single background thread to evict entries. */ - private final ExecutorService executorService = new ThreadPoolExecutor(0, 1, - 60L, TimeUnit.SECONDS, new LinkedBlockingQueue()); - private final Callable cleanupCallable = new Callable() { - @Override public Void call() throws Exception { - synchronized (DiskLruCache.this) { - if (journalWriter == null) { - return null; // closed - } - trimToSize(); - if (journalRebuildRequired()) { - rebuildJournal(); - redundantOpCount = 0; - } - } - return null; - } - }; - - private DiskLruCache(File directory, int appVersion, int valueCount, long maxSize) { - this.directory = directory; - this.appVersion = appVersion; - this.journalFile = new File(directory, JOURNAL_FILE); - this.journalFileTmp = new File(directory, JOURNAL_FILE_TMP); - this.valueCount = valueCount; - this.maxSize = maxSize; - } - - /** - * Opens the cache in {@code directory}, creating a cache if none exists - * there. - * - * @param directory a writable directory - * @param appVersion - * @param valueCount the number of values per cache entry. Must be positive. - * @param maxSize the maximum number of bytes this cache should use to store - * @throws IOException if reading or writing the cache directory fails - */ - public static DiskLruCache open(File directory, int appVersion, int valueCount, long maxSize) - throws IOException { - if (maxSize <= 0) { - throw new IllegalArgumentException("maxSize <= 0"); - } - if (valueCount <= 0) { - throw new IllegalArgumentException("valueCount <= 0"); - } - - // prefer to pick up where we left off - DiskLruCache cache = new DiskLruCache(directory, appVersion, valueCount, maxSize); - if (cache.journalFile.exists()) { - try { - cache.readJournal(); - cache.processJournal(); - cache.journalWriter = new BufferedWriter(new FileWriter(cache.journalFile, true), - IO_BUFFER_SIZE); - return cache; - } catch (IOException journalIsCorrupt) { -// System.logW("DiskLruCache " + directory + " is corrupt: " -// + journalIsCorrupt.getMessage() + ", removing"); - cache.delete(); - } - } - - // create a new empty cache - directory.mkdirs(); - cache = new DiskLruCache(directory, appVersion, valueCount, maxSize); - cache.rebuildJournal(); - return cache; - } - - private void readJournal() throws IOException { - InputStream in = new BufferedInputStream(new FileInputStream(journalFile), IO_BUFFER_SIZE); - try { - String magic = readAsciiLine(in); - String version = readAsciiLine(in); - String appVersionString = readAsciiLine(in); - String valueCountString = readAsciiLine(in); - String blank = readAsciiLine(in); - if (!MAGIC.equals(magic) - || !VERSION_1.equals(version) - || !Integer.toString(appVersion).equals(appVersionString) - || !Integer.toString(valueCount).equals(valueCountString) - || !"".equals(blank)) { - throw new IOException("unexpected journal header: [" - + magic + ", " + version + ", " + valueCountString + ", " + blank + "]"); - } - - while (true) { - try { - readJournalLine(readAsciiLine(in)); - } catch (EOFException endOfJournal) { - break; - } - } - } finally { - closeQuietly(in); - } - } - - private void readJournalLine(String line) throws IOException { - String[] parts = line.split(" "); - if (parts.length < 2) { - throw new IOException("unexpected journal line: " + line); - } - - String key = parts[1]; - if (parts[0].equals(REMOVE) && parts.length == 2) { - lruEntries.remove(key); - return; - } - - Entry entry = lruEntries.get(key); - if (entry == null) { - entry = new Entry(key); - lruEntries.put(key, entry); - } - - if (parts[0].equals(CLEAN) && parts.length == 2 + valueCount) { - entry.readable = true; - entry.currentEditor = null; - entry.setLengths(copyOfRange(parts, 2, parts.length)); - } else if (parts[0].equals(DIRTY) && parts.length == 2) { - entry.currentEditor = new Editor(entry); - } else if (parts[0].equals(READ) && parts.length == 2) { - // this work was already done by calling lruEntries.get() - } else { - throw new IOException("unexpected journal line: " + line); - } - } - - /** - * Computes the initial size and collects garbage as a part of opening the - * cache. Dirty entries are assumed to be inconsistent and will be deleted. - */ - private void processJournal() throws IOException { - deleteIfExists(journalFileTmp); - for (Iterator i = lruEntries.values().iterator(); i.hasNext(); ) { - Entry entry = i.next(); - if (entry.currentEditor == null) { - for (int t = 0; t < valueCount; t++) { - size += entry.lengths[t]; - } - } else { - entry.currentEditor = null; - for (int t = 0; t < valueCount; t++) { - deleteIfExists(entry.getCleanFile(t)); - deleteIfExists(entry.getDirtyFile(t)); - } - i.remove(); - } - } - } - - /** - * Creates a new journal that omits redundant information. This replaces the - * current journal if it exists. - */ - private synchronized void rebuildJournal() throws IOException { - if (journalWriter != null) { - journalWriter.close(); - } - - Writer writer = new BufferedWriter(new FileWriter(journalFileTmp), IO_BUFFER_SIZE); - writer.write(MAGIC); - writer.write("\n"); - writer.write(VERSION_1); - writer.write("\n"); - writer.write(Integer.toString(appVersion)); - writer.write("\n"); - writer.write(Integer.toString(valueCount)); - writer.write("\n"); - writer.write("\n"); - - for (Entry entry : lruEntries.values()) { - if (entry.currentEditor != null) { - writer.write(DIRTY + ' ' + entry.key + '\n'); - } else { - writer.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n'); - } - } - - writer.close(); - journalFileTmp.renameTo(journalFile); - journalWriter = new BufferedWriter(new FileWriter(journalFile, true), IO_BUFFER_SIZE); - } - - private static void deleteIfExists(File file) throws IOException { -// try { -// Libcore.os.remove(file.getPath()); -// } catch (ErrnoException errnoException) { -// if (errnoException.errno != OsConstants.ENOENT) { -// throw errnoException.rethrowAsIOException(); -// } -// } - if (file.exists() && !file.delete()) { - throw new IOException(); - } - } - - /** - * Returns a snapshot of the entry named {@code key}, or null if it doesn't - * exist is not currently readable. If a value is returned, it is moved to - * the head of the LRU queue. - */ - public synchronized Snapshot get(String key) throws IOException { - checkNotClosed(); - validateKey(key); - Entry entry = lruEntries.get(key); - if (entry == null) { - return null; - } - - if (!entry.readable) { - return null; - } - - /* - * Open all streams eagerly to guarantee that we see a single published - * snapshot. If we opened streams lazily then the streams could come - * from different edits. - */ - InputStream[] ins = new InputStream[valueCount]; - try { - for (int i = 0; i < valueCount; i++) { - ins[i] = new FileInputStream(entry.getCleanFile(i)); - } - } catch (FileNotFoundException e) { - // a file must have been deleted manually! - return null; - } - - redundantOpCount++; - journalWriter.append(READ + ' ' + key + '\n'); - if (journalRebuildRequired()) { - executorService.submit(cleanupCallable); - } - - return new Snapshot(key, entry.sequenceNumber, ins); - } - - /** - * Returns an editor for the entry named {@code key}, or null if another - * edit is in progress. - */ - public Editor edit(String key) throws IOException { - return edit(key, ANY_SEQUENCE_NUMBER); - } - - private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException { - checkNotClosed(); - validateKey(key); - Entry entry = lruEntries.get(key); - if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER - && (entry == null || entry.sequenceNumber != expectedSequenceNumber)) { - return null; // snapshot is stale - } - if (entry == null) { - entry = new Entry(key); - lruEntries.put(key, entry); - } else if (entry.currentEditor != null) { - return null; // another edit is in progress - } - - Editor editor = new Editor(entry); - entry.currentEditor = editor; - - // flush the journal before creating files to prevent file leaks - journalWriter.write(DIRTY + ' ' + key + '\n'); - journalWriter.flush(); - return editor; - } - - /** - * Returns the directory where this cache stores its data. - */ - public File getDirectory() { - return directory; - } - - /** - * Returns the maximum number of bytes that this cache should use to store - * its data. - */ - public long maxSize() { - return maxSize; - } - - /** - * Returns the number of bytes currently being used to store the values in - * this cache. This may be greater than the max size if a background - * deletion is pending. - */ - public synchronized long size() { - return size; - } - - private synchronized void completeEdit(Editor editor, boolean success) throws IOException { - Entry entry = editor.entry; - if (entry.currentEditor != editor) { - throw new IllegalStateException(); - } - - // if this edit is creating the entry for the first time, every index must have a value - if (success && !entry.readable) { - for (int i = 0; i < valueCount; i++) { - if (!entry.getDirtyFile(i).exists()) { - editor.abort(); - throw new IllegalStateException("edit didn't create file " + i); - } - } - } - - for (int i = 0; i < valueCount; i++) { - File dirty = entry.getDirtyFile(i); - if (success) { - if (dirty.exists()) { - File clean = entry.getCleanFile(i); - dirty.renameTo(clean); - long oldLength = entry.lengths[i]; - long newLength = clean.length(); - entry.lengths[i] = newLength; - size = size - oldLength + newLength; - } - } else { - deleteIfExists(dirty); - } - } - - redundantOpCount++; - entry.currentEditor = null; - if (entry.readable | success) { - entry.readable = true; - journalWriter.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n'); - if (success) { - entry.sequenceNumber = nextSequenceNumber++; - } - } else { - lruEntries.remove(entry.key); - journalWriter.write(REMOVE + ' ' + entry.key + '\n'); - } - - if (size > maxSize || journalRebuildRequired()) { - executorService.submit(cleanupCallable); - } - } - - /** - * We only rebuild the journal when it will halve the size of the journal - * and eliminate at least 2000 ops. - */ - private boolean journalRebuildRequired() { - final int REDUNDANT_OP_COMPACT_THRESHOLD = 2000; - return redundantOpCount >= REDUNDANT_OP_COMPACT_THRESHOLD - && redundantOpCount >= lruEntries.size(); - } - - /** - * Drops the entry for {@code key} if it exists and can be removed. Entries - * actively being edited cannot be removed. - * - * @return true if an entry was removed. - */ - public synchronized boolean remove(String key) throws IOException { - checkNotClosed(); - validateKey(key); - Entry entry = lruEntries.get(key); - if (entry == null || entry.currentEditor != null) { - return false; - } - - for (int i = 0; i < valueCount; i++) { - File file = entry.getCleanFile(i); - if (!file.delete()) { - throw new IOException("failed to delete " + file); - } - size -= entry.lengths[i]; - entry.lengths[i] = 0; - } - - redundantOpCount++; - journalWriter.append(REMOVE + ' ' + key + '\n'); - lruEntries.remove(key); - - if (journalRebuildRequired()) { - executorService.submit(cleanupCallable); - } - - return true; - } - - /** - * Returns true if this cache has been closed. - */ - public boolean isClosed() { - return journalWriter == null; - } - - private void checkNotClosed() { - if (journalWriter == null) { - throw new IllegalStateException("cache is closed"); - } - } - - /** - * Force buffered operations to the filesystem. - */ - public synchronized void flush() throws IOException { - checkNotClosed(); - trimToSize(); - journalWriter.flush(); - } - - /** - * Closes this cache. Stored values will remain on the filesystem. - */ - public synchronized void close() throws IOException { - if (journalWriter == null) { - return; // already closed - } - for (Entry entry : new ArrayList(lruEntries.values())) { - if (entry.currentEditor != null) { - entry.currentEditor.abort(); - } - } - trimToSize(); - journalWriter.close(); - journalWriter = null; - } - - private void trimToSize() throws IOException { - while (size > maxSize) { -// Map.Entry toEvict = lruEntries.eldest(); - final Map.Entry toEvict = lruEntries.entrySet().iterator().next(); - remove(toEvict.getKey()); - } - } - - /** - * Closes the cache and deletes all of its stored values. This will delete - * all files in the cache directory including files that weren't created by - * the cache. - */ - public void delete() throws IOException { - close(); - deleteContents(directory); - } - - private void validateKey(String key) { - if (key.contains(" ") || key.contains("\n") || key.contains("\r")) { - throw new IllegalArgumentException( - "keys must not contain spaces or newlines: \"" + key + "\""); - } - } - - private static String inputStreamToString(InputStream in) throws IOException { - return readFully(new InputStreamReader(in, UTF_8)); - } - - /** - * A snapshot of the values for an entry. - */ - public final class Snapshot implements Closeable { - private final String key; - private final long sequenceNumber; - private final InputStream[] ins; - - private Snapshot(String key, long sequenceNumber, InputStream[] ins) { - this.key = key; - this.sequenceNumber = sequenceNumber; - this.ins = ins; - } - - /** - * Returns an editor for this snapshot's entry, or null if either the - * entry has changed since this snapshot was created or if another edit - * is in progress. - */ - public Editor edit() throws IOException { - return DiskLruCache.this.edit(key, sequenceNumber); - } - - /** - * Returns the unbuffered stream with the value for {@code index}. - */ - public InputStream getInputStream(int index) { - return ins[index]; - } - - /** - * Returns the string value for {@code index}. - */ - public String getString(int index) throws IOException { - return inputStreamToString(getInputStream(index)); - } - - @Override public void close() { - for (InputStream in : ins) { - closeQuietly(in); - } - } - } - - /** - * Edits the values for an entry. - */ - public final class Editor { - private final Entry entry; - private boolean hasErrors; - - private Editor(Entry entry) { - this.entry = entry; - } - - /** - * Returns an unbuffered input stream to read the last committed value, - * or null if no value has been committed. - */ - public InputStream newInputStream(int index) throws IOException { - synchronized (DiskLruCache.this) { - if (entry.currentEditor != this) { - throw new IllegalStateException(); - } - if (!entry.readable) { - return null; - } - return new FileInputStream(entry.getCleanFile(index)); - } - } - - /** - * Returns the last committed value as a string, or null if no value - * has been committed. - */ - public String getString(int index) throws IOException { - InputStream in = newInputStream(index); - return in != null ? inputStreamToString(in) : null; - } - - /** - * Returns a new unbuffered output stream to write the value at - * {@code index}. If the underlying output stream encounters errors - * when writing to the filesystem, this edit will be aborted when - * {@link #commit} is called. The returned output stream does not throw - * IOExceptions. - */ - public OutputStream newOutputStream(int index) throws IOException { - synchronized (DiskLruCache.this) { - if (entry.currentEditor != this) { - throw new IllegalStateException(); - } - return new FaultHidingOutputStream(new FileOutputStream(entry.getDirtyFile(index))); - } - } - - /** - * Sets the value at {@code index} to {@code value}. - */ - public void set(int index, String value) throws IOException { - Writer writer = null; - try { - writer = new OutputStreamWriter(newOutputStream(index), UTF_8); - writer.write(value); - } finally { - closeQuietly(writer); - } - } - - /** - * Commits this edit so it is visible to readers. This releases the - * edit lock so another edit may be started on the same key. - */ - public void commit() throws IOException { - if (hasErrors) { - completeEdit(this, false); - remove(entry.key); // the previous entry is stale - } else { - completeEdit(this, true); - } - } - - /** - * Aborts this edit. This releases the edit lock so another edit may be - * started on the same key. - */ - public void abort() throws IOException { - completeEdit(this, false); - } - - private class FaultHidingOutputStream extends FilterOutputStream { - private FaultHidingOutputStream(OutputStream out) { - super(out); - } - - @Override public void write(int oneByte) { - try { - out.write(oneByte); - } catch (IOException e) { - hasErrors = true; - } - } - - @Override public void write(byte[] buffer, int offset, int length) { - try { - out.write(buffer, offset, length); - } catch (IOException e) { - hasErrors = true; - } - } - - @Override public void close() { - try { - out.close(); - } catch (IOException e) { - hasErrors = true; - } - } - - @Override public void flush() { - try { - out.flush(); - } catch (IOException e) { - hasErrors = true; - } - } - } - } - - private final class Entry { - private final String key; - - /** Lengths of this entry's files. */ - private final long[] lengths; - - /** True if this entry has ever been published */ - private boolean readable; - - /** The ongoing edit or null if this entry is not being edited. */ - private Editor currentEditor; - - /** The sequence number of the most recently committed edit to this entry. */ - private long sequenceNumber; - - private Entry(String key) { - this.key = key; - this.lengths = new long[valueCount]; - } - - public String getLengths() throws IOException { - StringBuilder result = new StringBuilder(); - for (long size : lengths) { - result.append(' ').append(size); - } - return result.toString(); - } - - /** - * Set lengths using decimal numbers like "10123". - */ - private void setLengths(String[] strings) throws IOException { - if (strings.length != valueCount) { - throw invalidLengths(strings); - } - - try { - for (int i = 0; i < strings.length; i++) { - lengths[i] = Long.parseLong(strings[i]); - } - } catch (NumberFormatException e) { - throw invalidLengths(strings); - } - } - - private IOException invalidLengths(String[] strings) throws IOException { - throw new IOException("unexpected journal line: " + Arrays.toString(strings)); - } - - public File getCleanFile(int i) { - return new File(directory, key + "." + i); - } - - public File getDirtyFile(int i) { - return new File(directory, key + "." + i + ".tmp"); - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageCache.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageCache.java deleted file mode 100644 index 7021d2c89..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageCache.java +++ /dev/null @@ -1,725 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.annotation.TargetApi; -import android.content.Context; -import android.graphics.Bitmap; -import android.graphics.Bitmap.CompressFormat; -import android.graphics.Bitmap.Config; -import android.graphics.BitmapFactory; -import android.graphics.drawable.BitmapDrawable; -import android.os.Build.VERSION_CODES; -import android.os.Bundle; -import android.os.Environment; -import android.os.StatFs; -import android.support.v4.app.Fragment; -import android.support.v4.app.FragmentManager; -import android.support.v4.util.LruCache; -import android.util.Log; - -import com.example.android.bitmapfun.BuildConfig; - -import java.io.File; -import java.io.FileDescriptor; -import java.io.FileInputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.OutputStream; -import java.lang.ref.SoftReference; -import java.security.MessageDigest; -import java.security.NoSuchAlgorithmException; -import java.util.Collections; -import java.util.HashSet; -import java.util.Iterator; -import java.util.Set; - -/** - * This class handles disk and memory caching of bitmaps in conjunction with the - * {@link ImageWorker} class and its subclasses. Use - * {@link ImageCache#getInstance(FragmentManager, ImageCacheParams)} to get an instance of this - * class, although usually a cache should be added directly to an {@link ImageWorker} by calling - * {@link ImageWorker#addImageCache(FragmentManager, ImageCacheParams)}. - */ -public class ImageCache { - private static final String TAG = "ImageCache"; - - // Default memory cache size in kilobytes - private static final int DEFAULT_MEM_CACHE_SIZE = 1024 * 5; // 5MB - - // Default disk cache size in bytes - private static final int DEFAULT_DISK_CACHE_SIZE = 1024 * 1024 * 10; // 10MB - - // Compression settings when writing images to disk cache - private static final CompressFormat DEFAULT_COMPRESS_FORMAT = CompressFormat.JPEG; - private static final int DEFAULT_COMPRESS_QUALITY = 70; - private static final int DISK_CACHE_INDEX = 0; - - // Constants to easily toggle various caches - private static final boolean DEFAULT_MEM_CACHE_ENABLED = true; - private static final boolean DEFAULT_DISK_CACHE_ENABLED = true; - private static final boolean DEFAULT_INIT_DISK_CACHE_ON_CREATE = false; - - private DiskLruCache mDiskLruCache; - private LruCache mMemoryCache; - private ImageCacheParams mCacheParams; - private final Object mDiskCacheLock = new Object(); - private boolean mDiskCacheStarting = true; - - private Set> mReusableBitmaps; - - /** - * Create a new ImageCache object using the specified parameters. This should not be - * called directly by other classes, instead use - * {@link ImageCache#getInstance(FragmentManager, ImageCacheParams)} to fetch an ImageCache - * instance. - * - * @param cacheParams The cache parameters to use to initialize the cache - */ - private ImageCache(ImageCacheParams cacheParams) { - init(cacheParams); - } - - /** - * Return an {@link ImageCache} instance. A {@link RetainFragment} is used to retain the - * ImageCache object across configuration changes such as a change in device orientation. - * - * @param fragmentManager The fragment manager to use when dealing with the retained fragment. - * @param cacheParams The cache parameters to use if the ImageCache needs instantiation. - * @return An existing retained ImageCache object or a new one if one did not exist - */ - public static ImageCache getInstance( - FragmentManager fragmentManager, ImageCacheParams cacheParams) { - - // Search for, or create an instance of the non-UI RetainFragment - final RetainFragment mRetainFragment = findOrCreateRetainFragment(fragmentManager); - - // See if we already have an ImageCache stored in RetainFragment - ImageCache imageCache = (ImageCache) mRetainFragment.getObject(); - - // No existing ImageCache, create one and store it in RetainFragment - if (imageCache == null) { - imageCache = new ImageCache(cacheParams); - mRetainFragment.setObject(imageCache); - } - - return imageCache; - } - - /** - * Initialize the cache, providing all parameters. - * - * @param cacheParams The cache parameters to initialize the cache - */ - private void init(ImageCacheParams cacheParams) { - mCacheParams = cacheParams; - - // Set up memory cache - if (mCacheParams.memoryCacheEnabled) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "Memory cache created (size = " + mCacheParams.memCacheSize + ")"); - } - - // If we're running on Honeycomb or newer, create a set of reusable bitmaps that can be - // populated into the inBitmap field of BitmapFactory.Options. Note that the set is - // of SoftReferences which will actually not be very effective due to the garbage - // collector being aggressive clearing Soft/WeakReferences. A better approach - // would be to use a strongly references bitmaps, however this would require some - // balancing of memory usage between this set and the bitmap LruCache. It would also - // require knowledge of the expected size of the bitmaps. From Honeycomb to JellyBean - // the size would need to be precise, from KitKat onward the size would just need to - // be the upper bound (due to changes in how inBitmap can re-use bitmaps). - if (Utils.hasHoneycomb()) { - mReusableBitmaps = - Collections.synchronizedSet(new HashSet>()); - } - - mMemoryCache = new LruCache(mCacheParams.memCacheSize) { - - /** - * Notify the removed entry that is no longer being cached - */ - @Override - protected void entryRemoved(boolean evicted, String key, - BitmapDrawable oldValue, BitmapDrawable newValue) { - if (RecyclingBitmapDrawable.class.isInstance(oldValue)) { - // The removed entry is a recycling drawable, so notify it - // that it has been removed from the memory cache - ((RecyclingBitmapDrawable) oldValue).setIsCached(false); - } else { - // The removed entry is a standard BitmapDrawable - - if (Utils.hasHoneycomb()) { - // We're running on Honeycomb or later, so add the bitmap - // to a SoftReference set for possible use with inBitmap later - mReusableBitmaps.add(new SoftReference(oldValue.getBitmap())); - } - } - } - - /** - * Measure item size in kilobytes rather than units which is more practical - * for a bitmap cache - */ - @Override - protected int sizeOf(String key, BitmapDrawable value) { - final int bitmapSize = getBitmapSize(value) / 1024; - return bitmapSize == 0 ? 1 : bitmapSize; - } - }; - } - - // By default the disk cache is not initialized here as it should be initialized - // on a separate thread due to disk access. - if (cacheParams.initDiskCacheOnCreate) { - // Set up disk cache - initDiskCache(); - } - } - - /** - * Initializes the disk cache. Note that this includes disk access so this should not be - * executed on the main/UI thread. By default an ImageCache does not initialize the disk - * cache when it is created, instead you should call initDiskCache() to initialize it on a - * background thread. - */ - public void initDiskCache() { - // Set up disk cache - synchronized (mDiskCacheLock) { - if (mDiskLruCache == null || mDiskLruCache.isClosed()) { - File diskCacheDir = mCacheParams.diskCacheDir; - if (mCacheParams.diskCacheEnabled && diskCacheDir != null) { - if (!diskCacheDir.exists()) { - diskCacheDir.mkdirs(); - } - if (getUsableSpace(diskCacheDir) > mCacheParams.diskCacheSize) { - try { - mDiskLruCache = DiskLruCache.open( - diskCacheDir, 1, 1, mCacheParams.diskCacheSize); - if (BuildConfig.DEBUG) { - Log.d(TAG, "Disk cache initialized"); - } - } catch (final IOException e) { - mCacheParams.diskCacheDir = null; - Log.e(TAG, "initDiskCache - " + e); - } - } - } - } - mDiskCacheStarting = false; - mDiskCacheLock.notifyAll(); - } - } - - /** - * Adds a bitmap to both memory and disk cache. - * @param data Unique identifier for the bitmap to store - * @param value The bitmap drawable to store - */ - public void addBitmapToCache(String data, BitmapDrawable value) { - if (data == null || value == null) { - return; - } - - // Add to memory cache - if (mMemoryCache != null) { - if (RecyclingBitmapDrawable.class.isInstance(value)) { - // The removed entry is a recycling drawable, so notify it - // that it has been added into the memory cache - ((RecyclingBitmapDrawable) value).setIsCached(true); - } - mMemoryCache.put(data, value); - } - - synchronized (mDiskCacheLock) { - // Add to disk cache - if (mDiskLruCache != null) { - final String key = hashKeyForDisk(data); - OutputStream out = null; - try { - DiskLruCache.Snapshot snapshot = mDiskLruCache.get(key); - if (snapshot == null) { - final DiskLruCache.Editor editor = mDiskLruCache.edit(key); - if (editor != null) { - out = editor.newOutputStream(DISK_CACHE_INDEX); - value.getBitmap().compress( - mCacheParams.compressFormat, mCacheParams.compressQuality, out); - editor.commit(); - out.close(); - } - } else { - snapshot.getInputStream(DISK_CACHE_INDEX).close(); - } - } catch (final IOException e) { - Log.e(TAG, "addBitmapToCache - " + e); - } catch (Exception e) { - Log.e(TAG, "addBitmapToCache - " + e); - } finally { - try { - if (out != null) { - out.close(); - } - } catch (IOException e) {} - } - } - } - } - - /** - * Get from memory cache. - * - * @param data Unique identifier for which item to get - * @return The bitmap drawable if found in cache, null otherwise - */ - public BitmapDrawable getBitmapFromMemCache(String data) { - BitmapDrawable memValue = null; - - if (mMemoryCache != null) { - memValue = mMemoryCache.get(data); - } - - if (BuildConfig.DEBUG && memValue != null) { - Log.d(TAG, "Memory cache hit"); - } - - return memValue; - } - - /** - * Get from disk cache. - * - * @param data Unique identifier for which item to get - * @return The bitmap if found in cache, null otherwise - */ - public Bitmap getBitmapFromDiskCache(String data) { - final String key = hashKeyForDisk(data); - Bitmap bitmap = null; - - synchronized (mDiskCacheLock) { - while (mDiskCacheStarting) { - try { - mDiskCacheLock.wait(); - } catch (InterruptedException e) {} - } - if (mDiskLruCache != null) { - InputStream inputStream = null; - try { - final DiskLruCache.Snapshot snapshot = mDiskLruCache.get(key); - if (snapshot != null) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "Disk cache hit"); - } - inputStream = snapshot.getInputStream(DISK_CACHE_INDEX); - if (inputStream != null) { - FileDescriptor fd = ((FileInputStream) inputStream).getFD(); - - // Decode bitmap, but we don't want to sample so give - // MAX_VALUE as the target dimensions - bitmap = ImageResizer.decodeSampledBitmapFromDescriptor( - fd, Integer.MAX_VALUE, Integer.MAX_VALUE, this); - } - } - } catch (final IOException e) { - Log.e(TAG, "getBitmapFromDiskCache - " + e); - } finally { - try { - if (inputStream != null) { - inputStream.close(); - } - } catch (IOException e) {} - } - } - return bitmap; - } - } - - /** - * @param options - BitmapFactory.Options with out* options populated - * @return Bitmap that case be used for inBitmap - */ - protected Bitmap getBitmapFromReusableSet(BitmapFactory.Options options) { - Bitmap bitmap = null; - - if (mReusableBitmaps != null && !mReusableBitmaps.isEmpty()) { - synchronized (mReusableBitmaps) { - final Iterator> iterator = mReusableBitmaps.iterator(); - Bitmap item; - - while (iterator.hasNext()) { - item = iterator.next().get(); - - if (null != item && item.isMutable()) { - // Check to see it the item can be used for inBitmap - if (canUseForInBitmap(item, options)) { - bitmap = item; - - // Remove from reusable set so it can't be used again - iterator.remove(); - break; - } - } else { - // Remove from the set if the reference has been cleared. - iterator.remove(); - } - } - } - } - - return bitmap; - } - - /** - * Clears both the memory and disk cache associated with this ImageCache object. Note that - * this includes disk access so this should not be executed on the main/UI thread. - */ - public void clearCache() { - if (mMemoryCache != null) { - mMemoryCache.evictAll(); - if (BuildConfig.DEBUG) { - Log.d(TAG, "Memory cache cleared"); - } - } - - synchronized (mDiskCacheLock) { - mDiskCacheStarting = true; - if (mDiskLruCache != null && !mDiskLruCache.isClosed()) { - try { - mDiskLruCache.delete(); - if (BuildConfig.DEBUG) { - Log.d(TAG, "Disk cache cleared"); - } - } catch (IOException e) { - Log.e(TAG, "clearCache - " + e); - } - mDiskLruCache = null; - initDiskCache(); - } - } - } - - /** - * Flushes the disk cache associated with this ImageCache object. Note that this includes - * disk access so this should not be executed on the main/UI thread. - */ - public void flush() { - synchronized (mDiskCacheLock) { - if (mDiskLruCache != null) { - try { - mDiskLruCache.flush(); - if (BuildConfig.DEBUG) { - Log.d(TAG, "Disk cache flushed"); - } - } catch (IOException e) { - Log.e(TAG, "flush - " + e); - } - } - } - } - - /** - * Closes the disk cache associated with this ImageCache object. Note that this includes - * disk access so this should not be executed on the main/UI thread. - */ - public void close() { - synchronized (mDiskCacheLock) { - if (mDiskLruCache != null) { - try { - if (!mDiskLruCache.isClosed()) { - mDiskLruCache.close(); - mDiskLruCache = null; - if (BuildConfig.DEBUG) { - Log.d(TAG, "Disk cache closed"); - } - } - } catch (IOException e) { - Log.e(TAG, "close - " + e); - } - } - } - } - - /** - * A holder class that contains cache parameters. - */ - public static class ImageCacheParams { - public int memCacheSize = DEFAULT_MEM_CACHE_SIZE; - public int diskCacheSize = DEFAULT_DISK_CACHE_SIZE; - public File diskCacheDir; - public CompressFormat compressFormat = DEFAULT_COMPRESS_FORMAT; - public int compressQuality = DEFAULT_COMPRESS_QUALITY; - public boolean memoryCacheEnabled = DEFAULT_MEM_CACHE_ENABLED; - public boolean diskCacheEnabled = DEFAULT_DISK_CACHE_ENABLED; - public boolean initDiskCacheOnCreate = DEFAULT_INIT_DISK_CACHE_ON_CREATE; - - /** - * Create a set of image cache parameters that can be provided to - * {@link ImageCache#getInstance(FragmentManager, ImageCacheParams)} or - * {@link ImageWorker#addImageCache(FragmentManager, ImageCacheParams)}. - * @param context A context to use. - * @param diskCacheDirectoryName A unique subdirectory name that will be appended to the - * application cache directory. Usually "cache" or "images" - * is sufficient. - */ - public ImageCacheParams(Context context, String diskCacheDirectoryName) { - diskCacheDir = getDiskCacheDir(context, diskCacheDirectoryName); - } - - /** - * Sets the memory cache size based on a percentage of the max available VM memory. - * Eg. setting percent to 0.2 would set the memory cache to one fifth of the available - * memory. Throws {@link IllegalArgumentException} if percent is < 0.01 or > .8. - * memCacheSize is stored in kilobytes instead of bytes as this will eventually be passed - * to construct a LruCache which takes an int in its constructor. - * - * This value should be chosen carefully based on a number of factors - * Refer to the corresponding Android Training class for more discussion: - * http://developer.android.com/training/displaying-bitmaps/ - * - * @param percent Percent of available app memory to use to size memory cache - */ - public void setMemCacheSizePercent(float percent) { - if (percent < 0.01f || percent > 0.8f) { - throw new IllegalArgumentException("setMemCacheSizePercent - percent must be " - + "between 0.01 and 0.8 (inclusive)"); - } - memCacheSize = Math.round(percent * Runtime.getRuntime().maxMemory() / 1024); - } - } - - /** - * @param candidate - Bitmap to check - * @param targetOptions - Options that have the out* value populated - * @return true if candidate can be used for inBitmap re-use with - * targetOptions - */ - @TargetApi(VERSION_CODES.KITKAT) - private static boolean canUseForInBitmap( - Bitmap candidate, BitmapFactory.Options targetOptions) { - - if (!Utils.hasKitKat()) { - // On earlier versions, the dimensions must match exactly and the inSampleSize must be 1 - return candidate.getWidth() == targetOptions.outWidth - && candidate.getHeight() == targetOptions.outHeight - && targetOptions.inSampleSize == 1; - } - - // From Android 4.4 (KitKat) onward we can re-use if the byte size of the new bitmap - // is smaller than the reusable bitmap candidate allocation byte count. - int width = targetOptions.outWidth / targetOptions.inSampleSize; - int height = targetOptions.outHeight / targetOptions.inSampleSize; - int byteCount = width * height * getBytesPerPixel(candidate.getConfig()); - return byteCount <= candidate.getAllocationByteCount(); - } - - /** - * Return the byte usage per pixel of a bitmap based on its configuration. - * @param config The bitmap configuration. - * @return The byte usage per pixel. - */ - private static int getBytesPerPixel(Config config) { - if (config == Config.ARGB_8888) { - return 4; - } else if (config == Config.RGB_565) { - return 2; - } else if (config == Config.ARGB_4444) { - return 2; - } else if (config == Config.ALPHA_8) { - return 1; - } - return 1; - } - - /** - * Get a usable cache directory (external if available, internal otherwise). - * - * @param context The context to use - * @param uniqueName A unique directory name to append to the cache dir - * @return The cache dir - */ - public static File getDiskCacheDir(Context context, String uniqueName) { - // Check if media is mounted or storage is built-in, if so, try and use external cache dir - // otherwise use internal cache dir - final String cachePath = - Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) || - !isExternalStorageRemovable() ? getExternalCacheDir(context).getPath() : - context.getCacheDir().getPath(); - - return new File(cachePath + File.separator + uniqueName); - } - - /** - * A hashing method that changes a string (like a URL) into a hash suitable for using as a - * disk filename. - */ - public static String hashKeyForDisk(String key) { - String cacheKey; - try { - final MessageDigest mDigest = MessageDigest.getInstance("MD5"); - mDigest.update(key.getBytes()); - cacheKey = bytesToHexString(mDigest.digest()); - } catch (NoSuchAlgorithmException e) { - cacheKey = String.valueOf(key.hashCode()); - } - return cacheKey; - } - - private static String bytesToHexString(byte[] bytes) { - // http://stackoverflow.com/questions/332079 - StringBuilder sb = new StringBuilder(); - for (int i = 0; i < bytes.length; i++) { - String hex = Integer.toHexString(0xFF & bytes[i]); - if (hex.length() == 1) { - sb.append('0'); - } - sb.append(hex); - } - return sb.toString(); - } - - /** - * Get the size in bytes of a bitmap in a BitmapDrawable. Note that from Android 4.4 (KitKat) - * onward this returns the allocated memory size of the bitmap which can be larger than the - * actual bitmap data byte count (in the case it was re-used). - * - * @param value - * @return size in bytes - */ - @TargetApi(VERSION_CODES.KITKAT) - public static int getBitmapSize(BitmapDrawable value) { - Bitmap bitmap = value.getBitmap(); - - // From KitKat onward use getAllocationByteCount() as allocated bytes can potentially be - // larger than bitmap byte count. - if (Utils.hasKitKat()) { - return bitmap.getAllocationByteCount(); - } - - if (Utils.hasHoneycombMR1()) { - return bitmap.getByteCount(); - } - - // Pre HC-MR1 - return bitmap.getRowBytes() * bitmap.getHeight(); - } - - /** - * Check if external storage is built-in or removable. - * - * @return True if external storage is removable (like an SD card), false - * otherwise. - */ - @TargetApi(VERSION_CODES.GINGERBREAD) - public static boolean isExternalStorageRemovable() { - if (Utils.hasGingerbread()) { - return Environment.isExternalStorageRemovable(); - } - return true; - } - - /** - * Get the external app cache directory. - * - * @param context The context to use - * @return The external cache dir - */ - @TargetApi(VERSION_CODES.FROYO) - public static File getExternalCacheDir(Context context) { - if (Utils.hasFroyo()) { - return context.getExternalCacheDir(); - } - - // Before Froyo we need to construct the external cache dir ourselves - final String cacheDir = "/Android/data/" + context.getPackageName() + "/cache/"; - return new File(Environment.getExternalStorageDirectory().getPath() + cacheDir); - } - - /** - * Check how much usable space is available at a given path. - * - * @param path The path to check - * @return The space available in bytes - */ - @TargetApi(VERSION_CODES.GINGERBREAD) - public static long getUsableSpace(File path) { - if (Utils.hasGingerbread()) { - return path.getUsableSpace(); - } - final StatFs stats = new StatFs(path.getPath()); - return (long) stats.getBlockSize() * (long) stats.getAvailableBlocks(); - } - - /** - * Locate an existing instance of this Fragment or if not found, create and - * add it using FragmentManager. - * - * @param fm The FragmentManager manager to use. - * @return The existing instance of the Fragment or the new instance if just - * created. - */ - private static RetainFragment findOrCreateRetainFragment(FragmentManager fm) { - // Check to see if we have retained the worker fragment. - RetainFragment mRetainFragment = (RetainFragment) fm.findFragmentByTag(TAG); - - // If not retained (or first time running), we need to create and add it. - if (mRetainFragment == null) { - mRetainFragment = new RetainFragment(); - fm.beginTransaction().add(mRetainFragment, TAG).commitAllowingStateLoss(); - } - - return mRetainFragment; - } - - /** - * A simple non-UI Fragment that stores a single Object and is retained over configuration - * changes. It will be used to retain the ImageCache object. - */ - public static class RetainFragment extends Fragment { - private Object mObject; - - /** - * Empty constructor as per the Fragment documentation - */ - public RetainFragment() {} - - @Override - public void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - - // Make sure this Fragment is retained over a configuration change - setRetainInstance(true); - } - - /** - * Store a single object in this Fragment. - * - * @param object The object to store - */ - public void setObject(Object object) { - mObject = object; - } - - /** - * Get the stored object. - * - * @return The stored object - */ - public Object getObject() { - return mObject; - } - } - -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageFetcher.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageFetcher.java deleted file mode 100644 index 4c92d7417..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageFetcher.java +++ /dev/null @@ -1,311 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.content.Context; -import android.graphics.Bitmap; -import android.net.ConnectivityManager; -import android.net.NetworkInfo; -import android.os.Build; -import android.util.Log; -import android.widget.Toast; - -import com.example.android.bitmapfun.BuildConfig; -import com.example.android.bitmapfun.R; - -import java.io.BufferedInputStream; -import java.io.BufferedOutputStream; -import java.io.File; -import java.io.FileDescriptor; -import java.io.FileInputStream; -import java.io.IOException; -import java.io.OutputStream; -import java.net.HttpURLConnection; -import java.net.URL; - -/** - * A simple subclass of {@link ImageResizer} that fetches and resizes images fetched from a URL. - */ -public class ImageFetcher extends ImageResizer { - private static final String TAG = "ImageFetcher"; - private static final int HTTP_CACHE_SIZE = 10 * 1024 * 1024; // 10MB - private static final String HTTP_CACHE_DIR = "http"; - private static final int IO_BUFFER_SIZE = 8 * 1024; - - private DiskLruCache mHttpDiskCache; - private File mHttpCacheDir; - private boolean mHttpDiskCacheStarting = true; - private final Object mHttpDiskCacheLock = new Object(); - private static final int DISK_CACHE_INDEX = 0; - - /** - * Initialize providing a target image width and height for the processing images. - * - * @param context - * @param imageWidth - * @param imageHeight - */ - public ImageFetcher(Context context, int imageWidth, int imageHeight) { - super(context, imageWidth, imageHeight); - init(context); - } - - /** - * Initialize providing a single target image size (used for both width and height); - * - * @param context - * @param imageSize - */ - public ImageFetcher(Context context, int imageSize) { - super(context, imageSize); - init(context); - } - - private void init(Context context) { - checkConnection(context); - mHttpCacheDir = ImageCache.getDiskCacheDir(context, HTTP_CACHE_DIR); - } - - @Override - protected void initDiskCacheInternal() { - super.initDiskCacheInternal(); - initHttpDiskCache(); - } - - private void initHttpDiskCache() { - if (!mHttpCacheDir.exists()) { - mHttpCacheDir.mkdirs(); - } - synchronized (mHttpDiskCacheLock) { - if (ImageCache.getUsableSpace(mHttpCacheDir) > HTTP_CACHE_SIZE) { - try { - mHttpDiskCache = DiskLruCache.open(mHttpCacheDir, 1, 1, HTTP_CACHE_SIZE); - if (BuildConfig.DEBUG) { - Log.d(TAG, "HTTP cache initialized"); - } - } catch (IOException e) { - mHttpDiskCache = null; - } - } - mHttpDiskCacheStarting = false; - mHttpDiskCacheLock.notifyAll(); - } - } - - @Override - protected void clearCacheInternal() { - super.clearCacheInternal(); - synchronized (mHttpDiskCacheLock) { - if (mHttpDiskCache != null && !mHttpDiskCache.isClosed()) { - try { - mHttpDiskCache.delete(); - if (BuildConfig.DEBUG) { - Log.d(TAG, "HTTP cache cleared"); - } - } catch (IOException e) { - Log.e(TAG, "clearCacheInternal - " + e); - } - mHttpDiskCache = null; - mHttpDiskCacheStarting = true; - initHttpDiskCache(); - } - } - } - - @Override - protected void flushCacheInternal() { - super.flushCacheInternal(); - synchronized (mHttpDiskCacheLock) { - if (mHttpDiskCache != null) { - try { - mHttpDiskCache.flush(); - if (BuildConfig.DEBUG) { - Log.d(TAG, "HTTP cache flushed"); - } - } catch (IOException e) { - Log.e(TAG, "flush - " + e); - } - } - } - } - - @Override - protected void closeCacheInternal() { - super.closeCacheInternal(); - synchronized (mHttpDiskCacheLock) { - if (mHttpDiskCache != null) { - try { - if (!mHttpDiskCache.isClosed()) { - mHttpDiskCache.close(); - mHttpDiskCache = null; - if (BuildConfig.DEBUG) { - Log.d(TAG, "HTTP cache closed"); - } - } - } catch (IOException e) { - Log.e(TAG, "closeCacheInternal - " + e); - } - } - } - } - - /** - * Simple network connection check. - * - * @param context - */ - private void checkConnection(Context context) { - final ConnectivityManager cm = - (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); - final NetworkInfo networkInfo = cm.getActiveNetworkInfo(); - if (networkInfo == null || !networkInfo.isConnectedOrConnecting()) { - Toast.makeText(context, R.string.no_network_connection_toast, Toast.LENGTH_LONG).show(); - Log.e(TAG, "checkConnection - no connection found"); - } - } - - /** - * The main process method, which will be called by the ImageWorker in the AsyncTask background - * thread. - * - * @param data The data to load the bitmap, in this case, a regular http URL - * @return The downloaded and resized bitmap - */ - private Bitmap processBitmap(String data) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "processBitmap - " + data); - } - - final String key = ImageCache.hashKeyForDisk(data); - FileDescriptor fileDescriptor = null; - FileInputStream fileInputStream = null; - DiskLruCache.Snapshot snapshot; - synchronized (mHttpDiskCacheLock) { - // Wait for disk cache to initialize - while (mHttpDiskCacheStarting) { - try { - mHttpDiskCacheLock.wait(); - } catch (InterruptedException e) {} - } - - if (mHttpDiskCache != null) { - try { - snapshot = mHttpDiskCache.get(key); - if (snapshot == null) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "processBitmap, not found in http cache, downloading..."); - } - DiskLruCache.Editor editor = mHttpDiskCache.edit(key); - if (editor != null) { - if (downloadUrlToStream(data, - editor.newOutputStream(DISK_CACHE_INDEX))) { - editor.commit(); - } else { - editor.abort(); - } - } - snapshot = mHttpDiskCache.get(key); - } - if (snapshot != null) { - fileInputStream = - (FileInputStream) snapshot.getInputStream(DISK_CACHE_INDEX); - fileDescriptor = fileInputStream.getFD(); - } - } catch (IOException e) { - Log.e(TAG, "processBitmap - " + e); - } catch (IllegalStateException e) { - Log.e(TAG, "processBitmap - " + e); - } finally { - if (fileDescriptor == null && fileInputStream != null) { - try { - fileInputStream.close(); - } catch (IOException e) {} - } - } - } - } - - Bitmap bitmap = null; - if (fileDescriptor != null) { - bitmap = decodeSampledBitmapFromDescriptor(fileDescriptor, mImageWidth, - mImageHeight, getImageCache()); - } - if (fileInputStream != null) { - try { - fileInputStream.close(); - } catch (IOException e) {} - } - return bitmap; - } - - @Override - protected Bitmap processBitmap(Object data) { - return processBitmap(String.valueOf(data)); - } - - /** - * Download a bitmap from a URL and write the content to an output stream. - * - * @param urlString The URL to fetch - * @return true if successful, false otherwise - */ - public boolean downloadUrlToStream(String urlString, OutputStream outputStream) { - disableConnectionReuseIfNecessary(); - HttpURLConnection urlConnection = null; - BufferedOutputStream out = null; - BufferedInputStream in = null; - - try { - final URL url = new URL(urlString); - urlConnection = (HttpURLConnection) url.openConnection(); - in = new BufferedInputStream(urlConnection.getInputStream(), IO_BUFFER_SIZE); - out = new BufferedOutputStream(outputStream, IO_BUFFER_SIZE); - - int b; - while ((b = in.read()) != -1) { - out.write(b); - } - return true; - } catch (final IOException e) { - Log.e(TAG, "Error in downloadBitmap - " + e); - } finally { - if (urlConnection != null) { - urlConnection.disconnect(); - } - try { - if (out != null) { - out.close(); - } - if (in != null) { - in.close(); - } - } catch (final IOException e) {} - } - return false; - } - - /** - * Workaround for bug pre-Froyo, see here for more info: - * http://android-developers.blogspot.com/2011/09/androids-http-clients.html - */ - public static void disableConnectionReuseIfNecessary() { - // HTTP connection reuse which was buggy pre-froyo - if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) { - System.setProperty("http.keepAlive", "false"); - } - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageResizer.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageResizer.java deleted file mode 100644 index e8ce4e12e..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageResizer.java +++ /dev/null @@ -1,264 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.annotation.TargetApi; -import android.content.Context; -import android.content.res.Resources; -import android.graphics.Bitmap; -import android.graphics.BitmapFactory; -import android.os.Build; -import android.util.Log; - -import com.example.android.bitmapfun.BuildConfig; - -import java.io.FileDescriptor; - -/** - * A simple subclass of {@link ImageWorker} that resizes images from resources given a target width - * and height. Useful for when the input images might be too large to simply load directly into - * memory. - */ -public class ImageResizer extends ImageWorker { - private static final String TAG = "ImageResizer"; - protected int mImageWidth; - protected int mImageHeight; - - /** - * Initialize providing a single target image size (used for both width and height); - * - * @param context - * @param imageWidth - * @param imageHeight - */ - public ImageResizer(Context context, int imageWidth, int imageHeight) { - super(context); - setImageSize(imageWidth, imageHeight); - } - - /** - * Initialize providing a single target image size (used for both width and height); - * - * @param context - * @param imageSize - */ - public ImageResizer(Context context, int imageSize) { - super(context); - setImageSize(imageSize); - } - - /** - * Set the target image width and height. - * - * @param width - * @param height - */ - public void setImageSize(int width, int height) { - mImageWidth = width; - mImageHeight = height; - } - - /** - * Set the target image size (width and height will be the same). - * - * @param size - */ - public void setImageSize(int size) { - setImageSize(size, size); - } - - /** - * The main processing method. This happens in a background task. In this case we are just - * sampling down the bitmap and returning it from a resource. - * - * @param resId - * @return - */ - private Bitmap processBitmap(int resId) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "processBitmap - " + resId); - } - return decodeSampledBitmapFromResource(mResources, resId, mImageWidth, - mImageHeight, getImageCache()); - } - - @Override - protected Bitmap processBitmap(Object data) { - return processBitmap(Integer.parseInt(String.valueOf(data))); - } - - /** - * Decode and sample down a bitmap from resources to the requested width and height. - * - * @param res The resources object containing the image data - * @param resId The resource id of the image data - * @param reqWidth The requested width of the resulting bitmap - * @param reqHeight The requested height of the resulting bitmap - * @param cache The ImageCache used to find candidate bitmaps for use with inBitmap - * @return A bitmap sampled down from the original with the same aspect ratio and dimensions - * that are equal to or greater than the requested width and height - */ - public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, - int reqWidth, int reqHeight, ImageCache cache) { - - // First decode with inJustDecodeBounds=true to check dimensions - final BitmapFactory.Options options = new BitmapFactory.Options(); - options.inJustDecodeBounds = true; - BitmapFactory.decodeResource(res, resId, options); - - // Calculate inSampleSize - options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); - - // If we're running on Honeycomb or newer, try to use inBitmap - if (Utils.hasHoneycomb()) { - addInBitmapOptions(options, cache); - } - - // Decode bitmap with inSampleSize set - options.inJustDecodeBounds = false; - return BitmapFactory.decodeResource(res, resId, options); - } - - /** - * Decode and sample down a bitmap from a file to the requested width and height. - * - * @param filename The full path of the file to decode - * @param reqWidth The requested width of the resulting bitmap - * @param reqHeight The requested height of the resulting bitmap - * @param cache The ImageCache used to find candidate bitmaps for use with inBitmap - * @return A bitmap sampled down from the original with the same aspect ratio and dimensions - * that are equal to or greater than the requested width and height - */ - public static Bitmap decodeSampledBitmapFromFile(String filename, - int reqWidth, int reqHeight, ImageCache cache) { - - // First decode with inJustDecodeBounds=true to check dimensions - final BitmapFactory.Options options = new BitmapFactory.Options(); - options.inJustDecodeBounds = true; - BitmapFactory.decodeFile(filename, options); - - // Calculate inSampleSize - options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); - - // If we're running on Honeycomb or newer, try to use inBitmap - if (Utils.hasHoneycomb()) { - addInBitmapOptions(options, cache); - } - - // Decode bitmap with inSampleSize set - options.inJustDecodeBounds = false; - return BitmapFactory.decodeFile(filename, options); - } - - /** - * Decode and sample down a bitmap from a file input stream to the requested width and height. - * - * @param fileDescriptor The file descriptor to read from - * @param reqWidth The requested width of the resulting bitmap - * @param reqHeight The requested height of the resulting bitmap - * @param cache The ImageCache used to find candidate bitmaps for use with inBitmap - * @return A bitmap sampled down from the original with the same aspect ratio and dimensions - * that are equal to or greater than the requested width and height - */ - public static Bitmap decodeSampledBitmapFromDescriptor( - FileDescriptor fileDescriptor, int reqWidth, int reqHeight, ImageCache cache) { - - // First decode with inJustDecodeBounds=true to check dimensions - final BitmapFactory.Options options = new BitmapFactory.Options(); - options.inJustDecodeBounds = true; - BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options); - - // Calculate inSampleSize - options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); - - // Decode bitmap with inSampleSize set - options.inJustDecodeBounds = false; - - // If we're running on Honeycomb or newer, try to use inBitmap - if (Utils.hasHoneycomb()) { - addInBitmapOptions(options, cache); - } - - return BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options); - } - - @TargetApi(Build.VERSION_CODES.HONEYCOMB) - private static void addInBitmapOptions(BitmapFactory.Options options, ImageCache cache) { - // inBitmap only works with mutable bitmaps so force the decoder to - // return mutable bitmaps. - options.inMutable = true; - - if (cache != null) { - // Try and find a bitmap to use for inBitmap - Bitmap inBitmap = cache.getBitmapFromReusableSet(options); - - if (inBitmap != null) { - options.inBitmap = inBitmap; - } - } - } - - /** - * Calculate an inSampleSize for use in a {@link BitmapFactory.Options} object when decoding - * bitmaps using the decode* methods from {@link BitmapFactory}. This implementation calculates - * the closest inSampleSize that is a power of 2 and will result in the final decoded bitmap - * having a width and height equal to or larger than the requested width and height. - * - * @param options An options object with out* params already populated (run through a decode* - * method with inJustDecodeBounds==true - * @param reqWidth The requested width of the resulting bitmap - * @param reqHeight The requested height of the resulting bitmap - * @return The value to be used for inSampleSize - */ - public static int calculateInSampleSize(BitmapFactory.Options options, - int reqWidth, int reqHeight) { - // Raw height and width of image - final int height = options.outHeight; - final int width = options.outWidth; - int inSampleSize = 1; - - if (height > reqHeight || width > reqWidth) { - - final int halfHeight = height / 2; - final int halfWidth = width / 2; - - // Calculate the largest inSampleSize value that is a power of 2 and keeps both - // height and width larger than the requested height and width. - while ((halfHeight / inSampleSize) > reqHeight - && (halfWidth / inSampleSize) > reqWidth) { - inSampleSize *= 2; - } - - // This offers some additional logic in case the image has a strange - // aspect ratio. For example, a panorama may have a much larger - // width than height. In these cases the total pixels might still - // end up being too large to fit comfortably in memory, so we should - // be more aggressive with sample down the image (=larger inSampleSize). - - long totalPixels = width * height / inSampleSize; - - // Anything more than 2x the requested pixels we'll sample down further - final long totalReqPixelsCap = reqWidth * reqHeight * 2; - - while (totalPixels > totalReqPixelsCap) { - inSampleSize *= 2; - totalPixels /= 2; - } - } - return inSampleSize; - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageWorker.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageWorker.java deleted file mode 100644 index d26066011..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/ImageWorker.java +++ /dev/null @@ -1,477 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import com.example.android.bitmapfun.BuildConfig; - -import android.content.Context; -import android.content.res.Resources; -import android.graphics.Bitmap; -import android.graphics.BitmapFactory; -import android.graphics.drawable.BitmapDrawable; -import android.graphics.drawable.ColorDrawable; -import android.graphics.drawable.Drawable; -import android.graphics.drawable.TransitionDrawable; -import android.support.v4.app.FragmentActivity; -import android.support.v4.app.FragmentManager; -import android.util.Log; -import android.widget.ImageView; - -import java.lang.ref.WeakReference; - -/** - * This class wraps up completing some arbitrary long running work when loading a bitmap to an - * ImageView. It handles things like using a memory and disk cache, running the work in a background - * thread and setting a placeholder image. - */ -public abstract class ImageWorker { - private static final String TAG = "ImageWorker"; - private static final int FADE_IN_TIME = 200; - - private ImageCache mImageCache; - private ImageCache.ImageCacheParams mImageCacheParams; - private Bitmap mLoadingBitmap; - private boolean mFadeInBitmap = true; - private boolean mExitTasksEarly = false; - protected boolean mPauseWork = false; - private final Object mPauseWorkLock = new Object(); - - protected Resources mResources; - - private static final int MESSAGE_CLEAR = 0; - private static final int MESSAGE_INIT_DISK_CACHE = 1; - private static final int MESSAGE_FLUSH = 2; - private static final int MESSAGE_CLOSE = 3; - - protected ImageWorker(Context context) { - mResources = context.getResources(); - } - - /** - * Load an image specified by the data parameter into an ImageView (override - * {@link ImageWorker#processBitmap(Object)} to define the processing logic). A memory and - * disk cache will be used if an {@link ImageCache} has been added using - * {@link ImageWorker#addImageCache(FragmentManager, ImageCache.ImageCacheParams)}. If the - * image is found in the memory cache, it is set immediately, otherwise an {@link AsyncTask} - * will be created to asynchronously load the bitmap. - * - * @param data The URL of the image to download. - * @param imageView The ImageView to bind the downloaded image to. - */ - public void loadImage(Object data, ImageView imageView) { - if (data == null) { - return; - } - - BitmapDrawable value = null; - - if (mImageCache != null) { - value = mImageCache.getBitmapFromMemCache(String.valueOf(data)); - } - - if (value != null) { - // Bitmap found in memory cache - imageView.setImageDrawable(value); - } else if (cancelPotentialWork(data, imageView)) { - final BitmapWorkerTask task = new BitmapWorkerTask(imageView); - final AsyncDrawable asyncDrawable = - new AsyncDrawable(mResources, mLoadingBitmap, task); - imageView.setImageDrawable(asyncDrawable); - - // NOTE: This uses a custom version of AsyncTask that has been pulled from the - // framework and slightly modified. Refer to the docs at the top of the class - // for more info on what was changed. - task.executeOnExecutor(AsyncTask.DUAL_THREAD_EXECUTOR, data); - } - } - - /** - * Set placeholder bitmap that shows when the the background thread is running. - * - * @param bitmap - */ - public void setLoadingImage(Bitmap bitmap) { - mLoadingBitmap = bitmap; - } - - /** - * Set placeholder bitmap that shows when the the background thread is running. - * - * @param resId - */ - public void setLoadingImage(int resId) { - mLoadingBitmap = BitmapFactory.decodeResource(mResources, resId); - } - - /** - * Adds an {@link ImageCache} to this {@link ImageWorker} to handle disk and memory bitmap - * caching. - * @param fragmentManager - * @param cacheParams The cache parameters to use for the image cache. - */ - public void addImageCache(FragmentManager fragmentManager, - ImageCache.ImageCacheParams cacheParams) { - mImageCacheParams = cacheParams; - mImageCache = ImageCache.getInstance(fragmentManager, mImageCacheParams); - new CacheAsyncTask().execute(MESSAGE_INIT_DISK_CACHE); - } - - /** - * Adds an {@link ImageCache} to this {@link ImageWorker} to handle disk and memory bitmap - * caching. - * @param activity - * @param diskCacheDirectoryName See - * {@link ImageCache.ImageCacheParams#ImageCacheParams(Context, String)}. - */ - public void addImageCache(FragmentActivity activity, String diskCacheDirectoryName) { - mImageCacheParams = new ImageCache.ImageCacheParams(activity, diskCacheDirectoryName); - mImageCache = ImageCache.getInstance(activity.getSupportFragmentManager(), mImageCacheParams); - new CacheAsyncTask().execute(MESSAGE_INIT_DISK_CACHE); - } - - /** - * If set to true, the image will fade-in once it has been loaded by the background thread. - */ - public void setImageFadeIn(boolean fadeIn) { - mFadeInBitmap = fadeIn; - } - - public void setExitTasksEarly(boolean exitTasksEarly) { - mExitTasksEarly = exitTasksEarly; - setPauseWork(false); - } - - /** - * Subclasses should override this to define any processing or work that must happen to produce - * the final bitmap. This will be executed in a background thread and be long running. For - * example, you could resize a large bitmap here, or pull down an image from the network. - * - * @param data The data to identify which image to process, as provided by - * {@link ImageWorker#loadImage(Object, ImageView)} - * @return The processed bitmap - */ - protected abstract Bitmap processBitmap(Object data); - - /** - * @return The {@link ImageCache} object currently being used by this ImageWorker. - */ - protected ImageCache getImageCache() { - return mImageCache; - } - - /** - * Cancels any pending work attached to the provided ImageView. - * @param imageView - */ - public static void cancelWork(ImageView imageView) { - final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView); - if (bitmapWorkerTask != null) { - bitmapWorkerTask.cancel(true); - if (BuildConfig.DEBUG) { - final Object bitmapData = bitmapWorkerTask.data; - Log.d(TAG, "cancelWork - cancelled work for " + bitmapData); - } - } - } - - /** - * Returns true if the current work has been canceled or if there was no work in - * progress on this image view. - * Returns false if the work in progress deals with the same data. The work is not - * stopped in that case. - */ - public static boolean cancelPotentialWork(Object data, ImageView imageView) { - final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView); - - if (bitmapWorkerTask != null) { - final Object bitmapData = bitmapWorkerTask.data; - if (bitmapData == null || !bitmapData.equals(data)) { - bitmapWorkerTask.cancel(true); - if (BuildConfig.DEBUG) { - Log.d(TAG, "cancelPotentialWork - cancelled work for " + data); - } - } else { - // The same work is already in progress. - return false; - } - } - return true; - } - - /** - * @param imageView Any imageView - * @return Retrieve the currently active work task (if any) associated with this imageView. - * null if there is no such task. - */ - private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) { - if (imageView != null) { - final Drawable drawable = imageView.getDrawable(); - if (drawable instanceof AsyncDrawable) { - final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable; - return asyncDrawable.getBitmapWorkerTask(); - } - } - return null; - } - - /** - * The actual AsyncTask that will asynchronously process the image. - */ - private class BitmapWorkerTask extends AsyncTask { - private Object data; - private final WeakReference imageViewReference; - - public BitmapWorkerTask(ImageView imageView) { - imageViewReference = new WeakReference(imageView); - } - - /** - * Background processing. - */ - @Override - protected BitmapDrawable doInBackground(Object... params) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "doInBackground - starting work"); - } - - data = params[0]; - final String dataString = String.valueOf(data); - Bitmap bitmap = null; - BitmapDrawable drawable = null; - - // Wait here if work is paused and the task is not cancelled - synchronized (mPauseWorkLock) { - while (mPauseWork && !isCancelled()) { - try { - mPauseWorkLock.wait(); - } catch (InterruptedException e) {} - } - } - - // If the image cache is available and this task has not been cancelled by another - // thread and the ImageView that was originally bound to this task is still bound back - // to this task and our "exit early" flag is not set then try and fetch the bitmap from - // the cache - if (mImageCache != null && !isCancelled() && getAttachedImageView() != null - && !mExitTasksEarly) { - bitmap = mImageCache.getBitmapFromDiskCache(dataString); - } - - // If the bitmap was not found in the cache and this task has not been cancelled by - // another thread and the ImageView that was originally bound to this task is still - // bound back to this task and our "exit early" flag is not set, then call the main - // process method (as implemented by a subclass) - if (bitmap == null && !isCancelled() && getAttachedImageView() != null - && !mExitTasksEarly) { - bitmap = processBitmap(params[0]); - } - - // If the bitmap was processed and the image cache is available, then add the processed - // bitmap to the cache for future use. Note we don't check if the task was cancelled - // here, if it was, and the thread is still running, we may as well add the processed - // bitmap to our cache as it might be used again in the future - if (bitmap != null) { - if (Utils.hasHoneycomb()) { - // Running on Honeycomb or newer, so wrap in a standard BitmapDrawable - drawable = new BitmapDrawable(mResources, bitmap); - } else { - // Running on Gingerbread or older, so wrap in a RecyclingBitmapDrawable - // which will recycle automagically - drawable = new RecyclingBitmapDrawable(mResources, bitmap); - } - - if (mImageCache != null) { - mImageCache.addBitmapToCache(dataString, drawable); - } - } - - if (BuildConfig.DEBUG) { - Log.d(TAG, "doInBackground - finished work"); - } - - return drawable; - } - - /** - * Once the image is processed, associates it to the imageView - */ - @Override - protected void onPostExecute(BitmapDrawable value) { - // if cancel was called on this task or the "exit early" flag is set then we're done - if (isCancelled() || mExitTasksEarly) { - value = null; - } - - final ImageView imageView = getAttachedImageView(); - if (value != null && imageView != null) { - if (BuildConfig.DEBUG) { - Log.d(TAG, "onPostExecute - setting bitmap"); - } - setImageDrawable(imageView, value); - } - } - - @Override - protected void onCancelled(BitmapDrawable value) { - super.onCancelled(value); - synchronized (mPauseWorkLock) { - mPauseWorkLock.notifyAll(); - } - } - - /** - * Returns the ImageView associated with this task as long as the ImageView's task still - * points to this task as well. Returns null otherwise. - */ - private ImageView getAttachedImageView() { - final ImageView imageView = imageViewReference.get(); - final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView); - - if (this == bitmapWorkerTask) { - return imageView; - } - - return null; - } - } - - /** - * A custom Drawable that will be attached to the imageView while the work is in progress. - * Contains a reference to the actual worker task, so that it can be stopped if a new binding is - * required, and makes sure that only the last started worker process can bind its result, - * independently of the finish order. - */ - private static class AsyncDrawable extends BitmapDrawable { - private final WeakReference bitmapWorkerTaskReference; - - public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) { - super(res, bitmap); - bitmapWorkerTaskReference = - new WeakReference(bitmapWorkerTask); - } - - public BitmapWorkerTask getBitmapWorkerTask() { - return bitmapWorkerTaskReference.get(); - } - } - - /** - * Called when the processing is complete and the final drawable should be - * set on the ImageView. - * - * @param imageView - * @param drawable - */ - private void setImageDrawable(ImageView imageView, Drawable drawable) { - if (mFadeInBitmap) { - // Transition drawable with a transparent drawable and the final drawable - final TransitionDrawable td = - new TransitionDrawable(new Drawable[] { - new ColorDrawable(android.R.color.transparent), - drawable - }); - // Set background to loading bitmap - imageView.setBackgroundDrawable( - new BitmapDrawable(mResources, mLoadingBitmap)); - - imageView.setImageDrawable(td); - td.startTransition(FADE_IN_TIME); - } else { - imageView.setImageDrawable(drawable); - } - } - - /** - * Pause any ongoing background work. This can be used as a temporary - * measure to improve performance. For example background work could - * be paused when a ListView or GridView is being scrolled using a - * {@link android.widget.AbsListView.OnScrollListener} to keep - * scrolling smooth. - *

- * If work is paused, be sure setPauseWork(false) is called again - * before your fragment or activity is destroyed (for example during - * {@link android.app.Activity#onPause()}), or there is a risk the - * background thread will never finish. - */ - public void setPauseWork(boolean pauseWork) { - synchronized (mPauseWorkLock) { - mPauseWork = pauseWork; - if (!mPauseWork) { - mPauseWorkLock.notifyAll(); - } - } - } - - protected class CacheAsyncTask extends AsyncTask { - - @Override - protected Void doInBackground(Object... params) { - switch ((Integer)params[0]) { - case MESSAGE_CLEAR: - clearCacheInternal(); - break; - case MESSAGE_INIT_DISK_CACHE: - initDiskCacheInternal(); - break; - case MESSAGE_FLUSH: - flushCacheInternal(); - break; - case MESSAGE_CLOSE: - closeCacheInternal(); - break; - } - return null; - } - } - - protected void initDiskCacheInternal() { - if (mImageCache != null) { - mImageCache.initDiskCache(); - } - } - - protected void clearCacheInternal() { - if (mImageCache != null) { - mImageCache.clearCache(); - } - } - - protected void flushCacheInternal() { - if (mImageCache != null) { - mImageCache.flush(); - } - } - - protected void closeCacheInternal() { - if (mImageCache != null) { - mImageCache.close(); - mImageCache = null; - } - } - - public void clearCache() { - new CacheAsyncTask().execute(MESSAGE_CLEAR); - } - - public void flushCache() { - new CacheAsyncTask().execute(MESSAGE_FLUSH); - } - - public void closeCache() { - new CacheAsyncTask().execute(MESSAGE_CLOSE); - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/RecyclingBitmapDrawable.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/RecyclingBitmapDrawable.java deleted file mode 100644 index 2aae97f3c..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/RecyclingBitmapDrawable.java +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright (C) 2013 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.content.res.Resources; -import android.graphics.Bitmap; -import android.graphics.drawable.BitmapDrawable; -import android.util.Log; - -import com.example.android.bitmapfun.BuildConfig; - -/** - * A BitmapDrawable that keeps track of whether it is being displayed or cached. - * When the drawable is no longer being displayed or cached, - * {@link Bitmap#recycle() recycle()} will be called on this drawable's bitmap. - */ -public class RecyclingBitmapDrawable extends BitmapDrawable { - - static final String LOG_TAG = "CountingBitmapDrawable"; - - private int mCacheRefCount = 0; - private int mDisplayRefCount = 0; - - private boolean mHasBeenDisplayed; - - public RecyclingBitmapDrawable(Resources res, Bitmap bitmap) { - super(res, bitmap); - } - - /** - * Notify the drawable that the displayed state has changed. Internally a - * count is kept so that the drawable knows when it is no longer being - * displayed. - * - * @param isDisplayed - Whether the drawable is being displayed or not - */ - public void setIsDisplayed(boolean isDisplayed) { - synchronized (this) { - if (isDisplayed) { - mDisplayRefCount++; - mHasBeenDisplayed = true; - } else { - mDisplayRefCount--; - } - } - - // Check to see if recycle() can be called - checkState(); - } - - /** - * Notify the drawable that the cache state has changed. Internally a count - * is kept so that the drawable knows when it is no longer being cached. - * - * @param isCached - Whether the drawable is being cached or not - */ - public void setIsCached(boolean isCached) { - synchronized (this) { - if (isCached) { - mCacheRefCount++; - } else { - mCacheRefCount--; - } - } - - // Check to see if recycle() can be called - checkState(); - } - - private synchronized void checkState() { - // If the drawable cache and display ref counts = 0, and this drawable - // has been displayed, then recycle - if (mCacheRefCount <= 0 && mDisplayRefCount <= 0 && mHasBeenDisplayed - && hasValidBitmap()) { - if (BuildConfig.DEBUG) { - Log.d(LOG_TAG, "No longer being used or cached so recycling. " - + toString()); - } - - getBitmap().recycle(); - } - } - - private synchronized boolean hasValidBitmap() { - Bitmap bitmap = getBitmap(); - return bitmap != null && !bitmap.isRecycled(); - } - -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/Utils.java b/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/Utils.java deleted file mode 100644 index 31dc3423f..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/java/com/example/android/bitmapfun/util/Utils.java +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Copyright (C) 2012 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.example.android.bitmapfun.util; - -import android.annotation.TargetApi; -import android.os.Build; -import android.os.Build.VERSION_CODES; -import android.os.StrictMode; - -import com.example.android.bitmapfun.ui.ImageDetailActivity; -import com.example.android.bitmapfun.ui.ImageGridActivity; - -/** - * Class containing some static utility methods. - */ -public class Utils { - private Utils() {}; - - - @TargetApi(VERSION_CODES.HONEYCOMB) - public static void enableStrictMode() { - if (Utils.hasGingerbread()) { - StrictMode.ThreadPolicy.Builder threadPolicyBuilder = - new StrictMode.ThreadPolicy.Builder() - .detectAll() - .penaltyLog(); - StrictMode.VmPolicy.Builder vmPolicyBuilder = - new StrictMode.VmPolicy.Builder() - .detectAll() - .penaltyLog(); - - if (Utils.hasHoneycomb()) { - threadPolicyBuilder.penaltyFlashScreen(); - vmPolicyBuilder - .setClassInstanceLimit(ImageGridActivity.class, 1) - .setClassInstanceLimit(ImageDetailActivity.class, 1); - } - StrictMode.setThreadPolicy(threadPolicyBuilder.build()); - StrictMode.setVmPolicy(vmPolicyBuilder.build()); - } - } - - public static boolean hasFroyo() { - // Can use static final constants like FROYO, declared in later versions - // of the OS since they are inlined at compile time. This is guaranteed behavior. - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO; - } - - public static boolean hasGingerbread() { - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD; - } - - public static boolean hasHoneycomb() { - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB; - } - - public static boolean hasHoneycombMR1() { - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1; - } - - public static boolean hasJellyBean() { - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; - } - - public static boolean hasKitKat() { - return Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT; - } -} diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/drawable-hdpi/ic_launcher.png b/samples/training/bitmapfun/BitmapFun/src/main/res/drawable-hdpi/ic_launcher.png deleted file mode 100644 index 75b3c978107062bdb3549adb3f59502fe207b5f9..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 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- - - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values-large/dimens.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values-large/dimens.xml deleted file mode 100644 index c68187614..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values-large/dimens.xml +++ /dev/null @@ -1,23 +0,0 @@ - - - - - - 148dp - 2dp - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values-v11/styles.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values-v11/styles.xml deleted file mode 100644 index 0c6452641..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values-v11/styles.xml +++ /dev/null @@ -1,36 +0,0 @@ - - - - - - - - - - - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values-xlarge/dimens.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values-xlarge/dimens.xml deleted file mode 100644 index 0f4397751..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values-xlarge/dimens.xml +++ /dev/null @@ -1,23 +0,0 @@ - - - - - - 198dp - 2dp - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values/colors.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values/colors.xml deleted file mode 100644 index 7e4a4fecd..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values/colors.xml +++ /dev/null @@ -1,23 +0,0 @@ - - - - - - #BB7dbcd3 - #777dbcd3 - - diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values/dimens.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values/dimens.xml deleted file mode 100644 index 60d540f02..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values/dimens.xml +++ /dev/null @@ -1,24 +0,0 @@ - - - - - - 100dp - 1dp - 80dp - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values/strings.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values/strings.xml deleted file mode 100644 index 8108c232f..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values/strings.xml +++ /dev/null @@ -1,31 +0,0 @@ - - - - - - BitmapFun - This is a sample application for the Android Training class - "Displaying Bitmaps Efficiently" - (http://developer.android.com/training/displaying-bitmaps/display-bitmap.html). It is not - designed to be a full reference application but to demonstrate the concepts discussed in - training course. - Clear Caches - Caches have been cleared - Image Thumbnail - No network connection found - - \ No newline at end of file diff --git a/samples/training/bitmapfun/BitmapFun/src/main/res/values/styles.xml b/samples/training/bitmapfun/BitmapFun/src/main/res/values/styles.xml deleted file mode 100644 index 0f1a018b9..000000000 --- a/samples/training/bitmapfun/BitmapFun/src/main/res/values/styles.xml +++ /dev/null @@ -1,29 +0,0 @@ - - - - - - - - \ No newline at end of file diff --git a/samples/training/bitmapfun/README b/samples/training/bitmapfun/README deleted file mode 100644 index a0a192f4c..000000000 --- a/samples/training/bitmapfun/README +++ /dev/null @@ -1,8 +0,0 @@ -This is an Android Studio project: -http://developer.android.com/sdk/installing/studio.html - -First copy local.properties.sample to local.properties and set your SDK path. - -Then import the project into Android Studio: -File -> Import Project -> Choose Directory -> Import from external model -> - Gradle -> Use default gradle wrapper -> Finish diff --git a/samples/training/bitmapfun/build.gradle b/samples/training/bitmapfun/build.gradle deleted file mode 100644 index 495c5038e..000000000 --- a/samples/training/bitmapfun/build.gradle +++ /dev/null @@ -1 +0,0 @@ -// Top-level build file where you can add configuration options common to all sub-projects/modules. diff --git a/samples/training/bitmapfun/local.properties.sample b/samples/training/bitmapfun/local.properties.sample deleted file mode 100644 index 37317f492..000000000 --- a/samples/training/bitmapfun/local.properties.sample +++ /dev/null @@ -1,7 +0,0 @@ -# This file should be copied to local.properties and path set to point -# to your Android SDK. - -# Location of the SDK. This is only used by Gradle. -# For customization when using a Version Control System, please read the -# header note. -sdk.dir=/usr/local/lib/android-sdk \ No newline at end of file diff --git a/samples/training/bitmapfun/settings.gradle b/samples/training/bitmapfun/settings.gradle deleted file mode 100644 index 9f12781b6..000000000 --- a/samples/training/bitmapfun/settings.gradle +++ /dev/null @@ -1 +0,0 @@ -include ':BitmapFun'