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Add print samples to the ApiDemos app.

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1. Added a sample for printing a bitmap.

2. Added a sample for printing an on-screen WebView.

3. Added s sample for printing an off-screen WebView.

4. Fixed a bug in the custom layout print sample.

Change-Id: I35b2bbf8c7fd9bc39be795b1f793d9ea7bdfc8a0
This commit is contained in:
Svetoslav Ganov
2013-10-30 12:08:33 -07:00
parent 0b73e61c6c
commit 42c6250c9d
12 changed files with 703 additions and 2 deletions
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82
samples/ApiDemos/src/com/example/android/apis/app/PrintBitmap.java Normal file
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@@ -0,0 +1,82 @@
package com.example.android.apis.app;
/*
* 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.
*/
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.print.PrintManager;
import android.support.v4.print.PrintHelper;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebView;
import android.widget.ImageView;
import com.example.android.apis.R;
/**
* This class demonstrates how to implement bitmap printing.
* <p>
* This activity shows an image and offers a print option in the overflow
* menu. When the user chooses to print a helper class from the support
* library is used to print the image.
* </p>
*
* @see PrintManager
* @see WebView
*/
public class PrintBitmap extends Activity {
private ImageView mImageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.print_bitmap);
mImageView = (ImageView) findViewById(R.id.image);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.print_custom_content, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.menu_print) {
print();
return true;
}
return super.onOptionsItemSelected(item);
}
private void print() {
// Get the print manager.
PrintHelper printHelper = new PrintHelper(this);
// Set the desired scale mode.
printHelper.setScaleMode(PrintHelper.SCALE_MODE_FIT);
// Get the bitmap for the ImageView's drawable.
Bitmap bitmap = ((BitmapDrawable) mImageView.getDrawable()).getBitmap();
// Print the bitmap.
printHelper.printBitmap("Print Bitmap", bitmap);
}
}

4
samples/ApiDemos/src/com/example/android/apis/app/PrintCustomContent.java
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@@ -376,9 +376,9 @@ public class PrintCustomContent extends ListActivity {
// Add the height but if the view crosses the page
// boundary we will put it to the next one.
pageContentHeight += view.getHeight();
pageContentHeight += view.getMeasuredHeight();
if (currentPage < 0 || pageContentHeight > mRenderPageHeight) {
pageContentHeight = view.getHeight();
pageContentHeight = view.getMeasuredHeight();
currentPage++;
// Done with the current page - finish it.
if (page != null) {

93
samples/ApiDemos/src/com/example/android/apis/app/PrintHtmlFromScreen.java Normal file
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@@ -0,0 +1,93 @@
/*
* 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.apis.app;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.print.PrintManager;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import com.example.android.apis.R;
/**
* This class demonstrates how to implement HTML content printing
* from a {@link WebView} which is shown on the screen.
* <p>
* This activity shows a simple HTML content in a {@link WebView}
* and allows the user to print that content via an action in the
* action bar. The shown {@link WebView} is doing the printing.
* </p>
*
* @see PrintManager
* @see WebView
*/
public class PrintHtmlFromScreen extends Activity {
private WebView mWebView;
private boolean mDataLoaded;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.print_html_from_screen);
mWebView = (WebView) findViewById(R.id.web_view);
// Important: Only enable the print option after the page is loaded.
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
// Data loaded, so now we want to show the print option.
mDataLoaded = true;
invalidateOptionsMenu();
}
});
// Load an HTML page.
mWebView.loadUrl("file:///android_res/raw/motogp_stats.html");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
if (mDataLoaded) {
getMenuInflater().inflate(R.menu.print_custom_content, menu);
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.menu_print) {
print();
return true;
}
return super.onOptionsItemSelected(item);
}
private void print() {
// Get the print manager.
PrintManager printManager = (PrintManager) getSystemService(
Context.PRINT_SERVICE);
// Pass in the ViewView's document adapter.
printManager.print("MotoGP stats", mWebView.createPrintDocumentAdapter(), null);
}
}

89
samples/ApiDemos/src/com/example/android/apis/app/PrintHtmlOffScreen.java Normal file
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@@ -0,0 +1,89 @@
/*
* 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.apis.app;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.print.PrintManager;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import com.example.android.apis.R;
/**
* This class demonstrates how to implement HTML content printing
* from a {@link WebView} which is not shown on the screen.
* <p>
* This activity shows a text prompt and when the user chooses the
* print option from the overflow menu an HTML page with content that
* is not on the screen is printed via an off-screen {@link WebView}.
* </p>
*
* @see PrintManager
* @see WebView
*/
public class PrintHtmlOffScreen extends Activity {
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.print_html_off_screen);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.print_custom_content, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.menu_print) {
print();
return true;
}
return super.onOptionsItemSelected(item);
}
private void print() {
// Create a WebView and hold on to it as the printing will start when
// load completes and we do not want the WbeView to be garbage collected.
mWebView = new WebView(this);
// Important: Only after the page is loaded we will do the print.
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
// Get the print manager.
PrintManager printManager = (PrintManager) getSystemService(
Context.PRINT_SERVICE);
// Pass in the ViewView's document adapter.
printManager.print("MotoGP stats", mWebView.createPrintDocumentAdapter(),
null);
}
});
// Load an HTML page.
mWebView.loadUrl("file:///android_res/raw/motogp_stats.html");
}
}