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Add sample for XML-defined Adapters.

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Change-Id: I31f4f93eeea0f0cac4485ce76d9188608567f071
This commit is contained in:
Romain Guy
2010-03-31 15:20:13 -07:00
parent 4794db1443
commit 0dd05fa9a8
9 changed files with 300 additions and 0 deletions
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16
samples/XmlAdapters/Android.mk Normal file
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LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE_TAGS := samples
# Only compile source java files in this apk.
LOCAL_SRC_FILES := $(call all-java-files-under, src)
LOCAL_PACKAGE_NAME := XmlAdaptersSample
LOCAL_PROGUARD_ENABLED := disabled
include $(BUILD_PACKAGE)
# Use the following include to make our test apk.
include $(call all-makefiles-under,$(LOCAL_PATH))

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samples/XmlAdapters/AndroidManifest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- 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.
-->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.xmladapters">
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application android:label="@string/app_name">
<activity android:name="ContactsListActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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samples/XmlAdapters/res/drawable-hdpi/ic_contact_picture.png Normal file
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samples/XmlAdapters/res/layout/contact_item.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 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.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeight">
<TextView
android:id="@+id/name"
android:layout_width="0px"
android:layout_weight="1.0"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center_vertical"
android:drawablePadding="6dip"
android:paddingLeft="6dip"
android:paddingRight="6dip" />
<ImageView
android:id="@+id/star"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>

33
samples/XmlAdapters/res/layout/contacts_list.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 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.
-->
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<ListView
android:id="@android:id/list"
android:adapter="@xml/contacts"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<TextView android:id="@android:id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="@string/no_contacts"
android:visibility="gone" />
</merge>

20
samples/XmlAdapters/res/values/strings.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 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" BASI
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.
-->
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
<string name="app_name">Xml Contacts Adapter</string>
<string name="no_contacts">No contacts available</string>
</resources>

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samples/XmlAdapters/res/xml/contacts.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 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.
-->
<cursor-adapter xmlns:android="http://schemas.android.com/apk/res/android"
android:uri="content://com.android.contacts/contacts"
android:selection="has_phone_number=1"
android:layout="@layout/contact_item">
<bind android:from="display_name" android:to="@id/name" android:as="string" />
<bind android:from="starred" android:to="@id/star" android:as="drawable">
<map android:fromValue="0" android:toValue="@android:drawable/star_big_off" />
<map android:fromValue="1" android:toValue="@android:drawable/star_big_on" />
</bind>
<bind android:from="_id" android:to="@id/name"
android:as="com.example.android.xmladapters.ContactPhotoBinder" />
</cursor-adapter>

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samples/XmlAdapters/src/com/example/android/xmladapters/ContactPhotoBinder.java Normal file
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/*
* Copyright (C) 2010 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.xmladapters;
import android.content.ContentUris;
import android.content.Context;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Adapters;
import android.widget.TextView;
import java.io.InputStream;
import java.util.HashMap;
/**
* This custom cursor binder is used by the adapter defined in res/xml to
* bin contacts photos to their respective list item. This binder simply
* queries a contact's photo based on the contact's id and sets the
* photo as a compound drawable on the TextView used to display the contact's
* name.
*/
public class ContactPhotoBinder extends Adapters.CursorBinder {
private static final int PHOTO_SIZE_DIP = 54;
private final Drawable mDefault;
private final HashMap<Long, Drawable> mCache;
private final Resources mResources;
private final int mPhotoSize;
public ContactPhotoBinder(Context context, Adapters.CursorTransformation transformation) {
super(context, transformation);
mResources = mContext.getResources();
// Default picture used when a contact does not provide one
mDefault = mResources.getDrawable(R.drawable.ic_contact_picture);
// Cache used to avoid requerying contacts photos every time
mCache = new HashMap<Long, Drawable>();
// Compute the size of the photo based on the display's density
mPhotoSize = (int) (PHOTO_SIZE_DIP * mResources.getDisplayMetrics().density + 0.5f);
}
@Override
public boolean bind(View view, Cursor cursor, int columnIndex) {
final long id = cursor.getLong(columnIndex);
// First check whether we have already cached the contact's photo
Drawable d = mCache.get(id);
if (d == null) {
// If the photo wasn't in the cache, ask the contacts provider for
// an input stream we can use to load the photo
Uri uri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id);
InputStream stream = ContactsContract.Contacts.openContactPhotoInputStream(
mContext.getContentResolver(), uri);
// Creates the drawable for the contact's photo or use our fallback drawable
if (stream != null) {
Bitmap bitmap = BitmapFactory.decodeStream(stream);
d = new BitmapDrawable(mResources, bitmap);
} else {
d = mDefault;
}
d.setBounds(0, 0, mPhotoSize, mPhotoSize);
((TextView) view).setCompoundDrawables(d, null, null, null);
// Remember the photo associated with this contact
mCache.put(id, d);
} else {
((TextView) view).setCompoundDrawables(d, null, null, null);
}
return true;
}
}

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samples/XmlAdapters/src/com/example/android/xmladapters/ContactsListActivity.java Normal file
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/*
* Copyright (C) 2010 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.xmladapters;
import android.app.ListActivity;
import android.os.Bundle;
/**
* This activity demonstrates how to create a complex UI using a ListView
* and an adapter defined in XML.
*
* The following activity shows a list of contacts, their starred status
* and their photos, using the adapter defined in res/xml.
*/
public class ContactsListActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contacts_list);
}
}