/*
* 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 app.test;
import android.app.Activity;
import android.appwidget.AppWidgetHost;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.Toast;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
public class Test extends Activity implements OnClickListener {
private static final String LOG_TAG = "WidgetPreviewActivity";
private static final boolean DEBUG = true;
private static final int APPWIDGET_HOST_ID = 2048;
private static final int REQUEST_WIDGET = 0;
private static final int REQUEST_CONFIGURE = 1;
private AppWidgetHost mAppWidgetHost = null;
private FrameLayout mAppWidgetFrame = null;
private AppWidgetHostView mAppWidgetView = null;
private int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
private String mAppWidgetName;
private int mPreviewWidth;
private int mPreviewHeight;
private Button mSnapshotButton = null;
private Button mEmailButton = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAppWidgetFrame = (FrameLayout)findViewById(R.id.main_frame);
mSnapshotButton = (Button)findViewById(R.id.snapshot_button);
mSnapshotButton.setOnClickListener(this);
mEmailButton = (Button)findViewById(R.id.email_button);
mEmailButton.setOnClickListener(this);
mAppWidgetHost = new AppWidgetHost(getApplicationContext(), APPWIDGET_HOST_ID);
final Object retainedObj = getLastNonConfigurationInstance();
if (retainedObj instanceof AppWidgetProviderInfo) {
AppWidgetProviderInfo info = (AppWidgetProviderInfo) retainedObj;
int id = mAppWidgetHost.allocateAppWidgetId();
AppWidgetManager.getInstance(getBaseContext()).bindAppWidgetId(id, info.provider);
setAppWidget(id);
} else {
startChooseActivity();
}
}
@Override
public void onStart() {
super.onStart();
mAppWidgetHost.startListening();
}
@Override
public Object onRetainNonConfigurationInstance() {
AppWidgetProviderInfo info = AppWidgetManager.getInstance(
getBaseContext()).getAppWidgetInfo(mAppWidgetId);
return info;
}
private void startChooseActivity() {
int id = mAppWidgetHost.allocateAppWidgetId();
Intent selectIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
selectIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);
startActivityForResult(selectIntent, REQUEST_WIDGET);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_WIDGET) {
if (data != null) {
int appWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
if (data.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
appWidgetId = data.getExtras().getInt(AppWidgetManager.EXTRA_APPWIDGET_ID);
}
if (resultCode == RESULT_OK) {
setAppWidget(appWidgetId);
} else {
mAppWidgetHost.deleteAppWidgetId(appWidgetId);
finish();
}
} else {
finish();
}
} else if (requestCode == REQUEST_CONFIGURE) {
if (data != null) {
int appWidgetId = data.getExtras().getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
if (resultCode == RESULT_OK) {
finishSetAppWidget(appWidgetId);
} else {
mAppWidgetHost.deleteAppWidgetId(appWidgetId);
}
}
}
}
private void setAppWidget(int appWidgetId) {
if (mAppWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) {
mAppWidgetHost.deleteAppWidgetId(mAppWidgetId);
}
/* Check for configuration */
AppWidgetProviderInfo providerInfo =
AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId);
if (providerInfo.configure != null) {
Intent configureIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
configureIntent.setComponent(providerInfo.configure);
configureIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
if (configureIntent != null) {
try {
startActivityForResult(configureIntent, REQUEST_CONFIGURE);
} catch (ActivityNotFoundException e) {
Log.d(LOG_TAG, "Configuration activity not found: " + e);
Toast errorToast = Toast.makeText(
getBaseContext(), R.string.configure_error, Toast.LENGTH_SHORT);
errorToast.show();
}
}
} else {
finishSetAppWidget(appWidgetId);
}
}
private void finishSetAppWidget(int appWidgetId) {
AppWidgetProviderInfo providerInfo =
AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId);
if (providerInfo != null) {
mAppWidgetView =
mAppWidgetHost.createView(getBaseContext(), appWidgetId, providerInfo);
int [] dimensions =
getLauncherCellDimensions(providerInfo.minWidth, providerInfo.minHeight);
mPreviewWidth = dimensions[0];
mPreviewHeight = dimensions[1];
mAppWidgetName =
AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId).label;
mAppWidgetName = mAppWidgetName.replaceAll("[^a-zA-Z0-9]", "_");
ViewGroup.LayoutParams p = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
mAppWidgetView.setLayoutParams(p);
mAppWidgetFrame.removeAllViews();
mAppWidgetHost.deleteAppWidgetId(mAppWidgetId);
mAppWidgetFrame.addView(mAppWidgetView, mPreviewWidth, mPreviewHeight);
mAppWidgetId = appWidgetId;
}
}
// Taken from CellLayout.java
public int[] getLauncherCellDimensions(int width, int height) {
// Always assume we're working with the smallest span to make sure we
// reserve enough space in both orientations.
Resources resources = getResources();
int cellWidth = resources.getDimensionPixelSize(R.dimen.workspace_cell_width);
int cellHeight = resources.getDimensionPixelSize(R.dimen.workspace_cell_height);
int widthGap = resources.getDimensionPixelSize(R.dimen.workspace_width_gap);
int heightGap = resources.getDimensionPixelSize(R.dimen.workspace_height_gap);
int previewCellSize = resources.getDimensionPixelSize(R.dimen.preview_cell_size);
// This logic imitates Launcher's CellLayout.rectToCell.
// Always round up to next largest cell
int smallerSize = Math.min(cellWidth, cellHeight);
int spanX = (width + smallerSize) / smallerSize;
int spanY = (height + smallerSize) / smallerSize;
// We use a fixed preview cell size so that you get the same preview image for
// the same cell-sized widgets across all devices
width = spanX * previewCellSize + ((spanX - 1) * widthGap);
height = spanY * previewCellSize + ((spanY - 1) * heightGap);
return new int[] { width, height };
}
private File buildFile(String name) {
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
return null;
}
File path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS);
int orientationCode = getResources().getConfiguration().orientation;
String orientation;
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
orientation = "landscape";
} else if (orientationCode == Configuration.ORIENTATION_PORTRAIT) {
orientation = "portrait";
} else if (orientationCode == Configuration.ORIENTATION_SQUARE) {
orientation = "square";
} else {
orientation = "undefined";
}
return new File(path, name + "_ori_" + orientation + ".png");
}
public Bitmap getPreviewBitmap() {
mAppWidgetView.invalidate();
Bitmap bmp = Bitmap.createBitmap(
mAppWidgetView.getWidth(), mAppWidgetView.getHeight(), Config.ARGB_8888);
Canvas c = new Canvas(bmp);
mAppWidgetView.draw(c);
return bmp;
}
private boolean saveImage(Bitmap bmp, String name) {
File pic = buildFile(mAppWidgetName);
if (pic == null) {
Log.d(LOG_TAG, "External storage not present");
return false;
}
pic.getParentFile().mkdirs();
FileOutputStream fout = null;
try {
fout = new FileOutputStream(pic);
if (!bmp.compress(CompressFormat.PNG, 100, fout)) {
Log.d(LOG_TAG, "Failed to compress image");
return false;
}
return true;
} catch (IOException e) {
Log.d(LOG_TAG, "Error writing to disk: " + e);
} finally {
try {
if (fout != null) {
fout.close();
}
} catch (IOException e) {
Log.d(LOG_TAG, "Could not close file: " + e);
}
}
return false;
}
@Override
public void onBackPressed() {
if (!getFragmentManager().popBackStackImmediate()) {
startChooseActivity();
}
}
@Override
public void onClick(View v) {
if (v == mSnapshotButton) {
int textId = R.string.saving_preview;
Toast preToast = Toast.makeText(getBaseContext(), textId, Toast.LENGTH_SHORT);
preToast.show();
Bitmap bmp = getPreviewBitmap();
if (saveImage(bmp, mAppWidgetName)) {
textId = R.string.preview_saved;
} else {
textId = R.string.preview_save_error;
}
Toast postToast = Toast.makeText(getBaseContext(), textId, Toast.LENGTH_SHORT);
postToast.show();
} else if (v == mEmailButton) {
File file = buildFile(mAppWidgetName);
if (file.exists()) {
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setType("image/png");
emailIntent.putExtra(Intent.EXTRA_SUBJECT,
getResources().getString(R.string.email_subject));
emailIntent.putExtra(Intent.EXTRA_TEXT,
getResources().getString(R.string.email_body));
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
startActivity(emailIntent);
} else {
Toast postToast = Toast.makeText(
getBaseContext(), R.string.no_preview, Toast.LENGTH_SHORT);
postToast.show();
}
}
}
}
//
//res\layout\activity_main.xml
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="20dp">
android:id="@+id/email_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="@string/email_button" />
android:id="@+id/snapshot_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@id/email_button"
android:text="@string/snapshot_button" />
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_above="@id/snapshot_button"
android:layout_centerHorizontal="true">
android:id="@+id/main_frame"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
//
//res\values\dimens.xml
96dip
//res\values\strings.xml
Widget Preview
Saving widget preview...
Widget preview saved!
Please take a snapshot first
Error saving preview
Error configuring, no configuration activity found
Widget preview
Attached is the preview of your AppWidget
Take Snapshot
Email Preview
//
//res\values-land\dimens.xml
106dip
74dip
0dp
0dp
//
//res\values-port\dimens.xml
80dip
100dip
0dp
0dp
//
//res\values-xlarge\dimens.xml
96dip
96dip
0dp
0dp