PhotoAppWidgetProvider.java revision 666ea1b28a76aeba74744148b15099254d918671
1666ea1b28a76aeba74744148b15099254d918671Owen Lin/* 2666ea1b28a76aeba74744148b15099254d918671Owen Lin * Copyright (C) 2009 The Android Open Source Project 3666ea1b28a76aeba74744148b15099254d918671Owen Lin * 4666ea1b28a76aeba74744148b15099254d918671Owen Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5666ea1b28a76aeba74744148b15099254d918671Owen Lin * you may not use this file except in compliance with the License. 6666ea1b28a76aeba74744148b15099254d918671Owen Lin * You may obtain a copy of the License at 7666ea1b28a76aeba74744148b15099254d918671Owen Lin * 8666ea1b28a76aeba74744148b15099254d918671Owen Lin * http://www.apache.org/licenses/LICENSE-2.0 9666ea1b28a76aeba74744148b15099254d918671Owen Lin * 10666ea1b28a76aeba74744148b15099254d918671Owen Lin * Unless required by applicable law or agreed to in writing, software 11666ea1b28a76aeba74744148b15099254d918671Owen Lin * distributed under the License is distributed on an "AS IS" BASIS, 12666ea1b28a76aeba74744148b15099254d918671Owen Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13666ea1b28a76aeba74744148b15099254d918671Owen Lin * See the License for the specific language governing permissions and 14666ea1b28a76aeba74744148b15099254d918671Owen Lin * limitations under the License. 15666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 16666ea1b28a76aeba74744148b15099254d918671Owen Lin 17666ea1b28a76aeba74744148b15099254d918671Owen Linpackage com.android.camera; 18666ea1b28a76aeba74744148b15099254d918671Owen Lin 19666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.appwidget.AppWidgetManager; 20666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.appwidget.AppWidgetProvider; 21666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.content.ContentValues; 22666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.content.Context; 23666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.database.Cursor; 24666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.database.sqlite.SQLiteDatabase; 25666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.database.sqlite.SQLiteException; 26666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.database.sqlite.SQLiteOpenHelper; 27666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.graphics.Bitmap; 28666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.graphics.BitmapFactory; 29666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.util.Log; 30666ea1b28a76aeba74744148b15099254d918671Owen Linimport android.widget.RemoteViews; 31666ea1b28a76aeba74744148b15099254d918671Owen Lin 32666ea1b28a76aeba74744148b15099254d918671Owen Linimport java.io.ByteArrayOutputStream; 33666ea1b28a76aeba74744148b15099254d918671Owen Linimport java.io.IOException; 34666ea1b28a76aeba74744148b15099254d918671Owen Lin 35666ea1b28a76aeba74744148b15099254d918671Owen Lin/** 36666ea1b28a76aeba74744148b15099254d918671Owen Lin * Simple widget to show a user-selected picture. 37666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 38666ea1b28a76aeba74744148b15099254d918671Owen Linpublic class PhotoAppWidgetProvider extends AppWidgetProvider { 39666ea1b28a76aeba74744148b15099254d918671Owen Lin private static final String TAG = "PhotoAppWidgetProvider"; 40666ea1b28a76aeba74744148b15099254d918671Owen Lin private static final boolean LOGD = true; 41666ea1b28a76aeba74744148b15099254d918671Owen Lin 42666ea1b28a76aeba74744148b15099254d918671Owen Lin @Override 43666ea1b28a76aeba74744148b15099254d918671Owen Lin public void onUpdate(Context context, AppWidgetManager appWidgetManager, 44666ea1b28a76aeba74744148b15099254d918671Owen Lin int[] appWidgetIds) { 45666ea1b28a76aeba74744148b15099254d918671Owen Lin // Update each requested appWidgetId with its unique photo 46666ea1b28a76aeba74744148b15099254d918671Owen Lin PhotoDatabaseHelper helper = new PhotoDatabaseHelper(context); 47666ea1b28a76aeba74744148b15099254d918671Owen Lin for (int appWidgetId : appWidgetIds) { 48666ea1b28a76aeba74744148b15099254d918671Owen Lin int[] specificAppWidget = new int[] { appWidgetId }; 49666ea1b28a76aeba74744148b15099254d918671Owen Lin RemoteViews views = buildUpdate(context, appWidgetId, helper); 50666ea1b28a76aeba74744148b15099254d918671Owen Lin if (LOGD) { 51666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.d(TAG, "sending out views=" + views 52666ea1b28a76aeba74744148b15099254d918671Owen Lin + " for id=" + appWidgetId); 53666ea1b28a76aeba74744148b15099254d918671Owen Lin } 54666ea1b28a76aeba74744148b15099254d918671Owen Lin appWidgetManager.updateAppWidget(specificAppWidget, views); 55666ea1b28a76aeba74744148b15099254d918671Owen Lin } 56666ea1b28a76aeba74744148b15099254d918671Owen Lin helper.close(); 57666ea1b28a76aeba74744148b15099254d918671Owen Lin } 58666ea1b28a76aeba74744148b15099254d918671Owen Lin 59666ea1b28a76aeba74744148b15099254d918671Owen Lin @Override 60666ea1b28a76aeba74744148b15099254d918671Owen Lin public void onDeleted(Context context, int[] appWidgetIds) { 61666ea1b28a76aeba74744148b15099254d918671Owen Lin // Clean deleted photos out of our database 62666ea1b28a76aeba74744148b15099254d918671Owen Lin PhotoDatabaseHelper helper = new PhotoDatabaseHelper(context); 63666ea1b28a76aeba74744148b15099254d918671Owen Lin for (int appWidgetId : appWidgetIds) { 64666ea1b28a76aeba74744148b15099254d918671Owen Lin helper.deletePhoto(appWidgetId); 65666ea1b28a76aeba74744148b15099254d918671Owen Lin } 66666ea1b28a76aeba74744148b15099254d918671Owen Lin helper.close(); 67666ea1b28a76aeba74744148b15099254d918671Owen Lin } 68666ea1b28a76aeba74744148b15099254d918671Owen Lin 69666ea1b28a76aeba74744148b15099254d918671Owen Lin /** 70666ea1b28a76aeba74744148b15099254d918671Owen Lin * Load photo for given widget and build {@link RemoteViews} for it. 71666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 72666ea1b28a76aeba74744148b15099254d918671Owen Lin static RemoteViews buildUpdate(Context context, int appWidgetId, 73666ea1b28a76aeba74744148b15099254d918671Owen Lin PhotoDatabaseHelper helper) { 74666ea1b28a76aeba74744148b15099254d918671Owen Lin RemoteViews views = null; 75666ea1b28a76aeba74744148b15099254d918671Owen Lin Bitmap bitmap = helper.getPhoto(appWidgetId); 76666ea1b28a76aeba74744148b15099254d918671Owen Lin if (bitmap != null) { 77666ea1b28a76aeba74744148b15099254d918671Owen Lin views = new RemoteViews(context.getPackageName(), 78666ea1b28a76aeba74744148b15099254d918671Owen Lin R.layout.photo_frame); 79666ea1b28a76aeba74744148b15099254d918671Owen Lin views.setImageViewBitmap(R.id.photo, bitmap); 80666ea1b28a76aeba74744148b15099254d918671Owen Lin } 81666ea1b28a76aeba74744148b15099254d918671Owen Lin return views; 82666ea1b28a76aeba74744148b15099254d918671Owen Lin } 83666ea1b28a76aeba74744148b15099254d918671Owen Lin 84666ea1b28a76aeba74744148b15099254d918671Owen Lin static class PhotoDatabaseHelper extends SQLiteOpenHelper { 85666ea1b28a76aeba74744148b15099254d918671Owen Lin private static final String DATABASE_NAME = "launcher.db"; 86666ea1b28a76aeba74744148b15099254d918671Owen Lin 87666ea1b28a76aeba74744148b15099254d918671Owen Lin private static final int DATABASE_VERSION = 2; 88666ea1b28a76aeba74744148b15099254d918671Owen Lin 89666ea1b28a76aeba74744148b15099254d918671Owen Lin static final String TABLE_PHOTOS = "photos"; 90666ea1b28a76aeba74744148b15099254d918671Owen Lin static final String FIELD_APPWIDGET_ID = "appWidgetId"; 91666ea1b28a76aeba74744148b15099254d918671Owen Lin static final String FIELD_PHOTO_BLOB = "photoBlob"; 92666ea1b28a76aeba74744148b15099254d918671Owen Lin 93666ea1b28a76aeba74744148b15099254d918671Owen Lin PhotoDatabaseHelper(Context context) { 94666ea1b28a76aeba74744148b15099254d918671Owen Lin super(context, DATABASE_NAME, null, DATABASE_VERSION); 95666ea1b28a76aeba74744148b15099254d918671Owen Lin } 96666ea1b28a76aeba74744148b15099254d918671Owen Lin 97666ea1b28a76aeba74744148b15099254d918671Owen Lin @Override 98666ea1b28a76aeba74744148b15099254d918671Owen Lin public void onCreate(SQLiteDatabase db) { 99666ea1b28a76aeba74744148b15099254d918671Owen Lin db.execSQL("CREATE TABLE " + TABLE_PHOTOS + " (" + 100666ea1b28a76aeba74744148b15099254d918671Owen Lin FIELD_APPWIDGET_ID + " INTEGER PRIMARY KEY," + 101666ea1b28a76aeba74744148b15099254d918671Owen Lin FIELD_PHOTO_BLOB + " BLOB" + 102666ea1b28a76aeba74744148b15099254d918671Owen Lin ");"); 103666ea1b28a76aeba74744148b15099254d918671Owen Lin } 104666ea1b28a76aeba74744148b15099254d918671Owen Lin 105666ea1b28a76aeba74744148b15099254d918671Owen Lin @Override 106666ea1b28a76aeba74744148b15099254d918671Owen Lin public void onUpgrade(SQLiteDatabase db, int oldVersion, 107666ea1b28a76aeba74744148b15099254d918671Owen Lin int newVersion) { 108666ea1b28a76aeba74744148b15099254d918671Owen Lin int version = oldVersion; 109666ea1b28a76aeba74744148b15099254d918671Owen Lin 110666ea1b28a76aeba74744148b15099254d918671Owen Lin if (version != DATABASE_VERSION) { 111666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.w(TAG, "Destroying all old data."); 112666ea1b28a76aeba74744148b15099254d918671Owen Lin db.execSQL("DROP TABLE IF EXISTS " + TABLE_PHOTOS); 113666ea1b28a76aeba74744148b15099254d918671Owen Lin onCreate(db); 114666ea1b28a76aeba74744148b15099254d918671Owen Lin } 115666ea1b28a76aeba74744148b15099254d918671Owen Lin } 116666ea1b28a76aeba74744148b15099254d918671Owen Lin 117666ea1b28a76aeba74744148b15099254d918671Owen Lin /** 118666ea1b28a76aeba74744148b15099254d918671Owen Lin * Store the given bitmap in this database for the given appWidgetId. 119666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 120666ea1b28a76aeba74744148b15099254d918671Owen Lin public boolean setPhoto(int appWidgetId, Bitmap bitmap) { 121666ea1b28a76aeba74744148b15099254d918671Owen Lin boolean success = false; 122666ea1b28a76aeba74744148b15099254d918671Owen Lin try { 123666ea1b28a76aeba74744148b15099254d918671Owen Lin // Try go guesstimate how much space the icon will take when 124666ea1b28a76aeba74744148b15099254d918671Owen Lin // serialized to avoid unnecessary allocations/copies during 125666ea1b28a76aeba74744148b15099254d918671Owen Lin // the write. 126666ea1b28a76aeba74744148b15099254d918671Owen Lin int size = bitmap.getWidth() * bitmap.getHeight() * 4; 127666ea1b28a76aeba74744148b15099254d918671Owen Lin ByteArrayOutputStream out = new ByteArrayOutputStream(size); 128666ea1b28a76aeba74744148b15099254d918671Owen Lin bitmap.compress(Bitmap.CompressFormat.PNG, 100, out); 129666ea1b28a76aeba74744148b15099254d918671Owen Lin out.flush(); 130666ea1b28a76aeba74744148b15099254d918671Owen Lin out.close(); 131666ea1b28a76aeba74744148b15099254d918671Owen Lin 132666ea1b28a76aeba74744148b15099254d918671Owen Lin ContentValues values = new ContentValues(); 133666ea1b28a76aeba74744148b15099254d918671Owen Lin values.put(PhotoDatabaseHelper.FIELD_APPWIDGET_ID, appWidgetId); 134666ea1b28a76aeba74744148b15099254d918671Owen Lin values.put(PhotoDatabaseHelper.FIELD_PHOTO_BLOB, 135666ea1b28a76aeba74744148b15099254d918671Owen Lin out.toByteArray()); 136666ea1b28a76aeba74744148b15099254d918671Owen Lin 137666ea1b28a76aeba74744148b15099254d918671Owen Lin SQLiteDatabase db = getWritableDatabase(); 138666ea1b28a76aeba74744148b15099254d918671Owen Lin db.insertOrThrow(PhotoDatabaseHelper.TABLE_PHOTOS, null, 139666ea1b28a76aeba74744148b15099254d918671Owen Lin values); 140666ea1b28a76aeba74744148b15099254d918671Owen Lin 141666ea1b28a76aeba74744148b15099254d918671Owen Lin success = true; 142666ea1b28a76aeba74744148b15099254d918671Owen Lin } catch (SQLiteException e) { 143666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.e(TAG, "Could not open database", e); 144666ea1b28a76aeba74744148b15099254d918671Owen Lin } catch (IOException e) { 145666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.e(TAG, "Could not serialize photo", e); 146666ea1b28a76aeba74744148b15099254d918671Owen Lin } 147666ea1b28a76aeba74744148b15099254d918671Owen Lin if (LOGD) { 148666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.d(TAG, "setPhoto success=" + success); 149666ea1b28a76aeba74744148b15099254d918671Owen Lin } 150666ea1b28a76aeba74744148b15099254d918671Owen Lin return success; 151666ea1b28a76aeba74744148b15099254d918671Owen Lin } 152666ea1b28a76aeba74744148b15099254d918671Owen Lin 153666ea1b28a76aeba74744148b15099254d918671Owen Lin static final String[] PHOTOS_PROJECTION = { 154666ea1b28a76aeba74744148b15099254d918671Owen Lin FIELD_PHOTO_BLOB, 155666ea1b28a76aeba74744148b15099254d918671Owen Lin }; 156666ea1b28a76aeba74744148b15099254d918671Owen Lin 157666ea1b28a76aeba74744148b15099254d918671Owen Lin static final int INDEX_PHOTO_BLOB = 0; 158666ea1b28a76aeba74744148b15099254d918671Owen Lin 159666ea1b28a76aeba74744148b15099254d918671Owen Lin /** 160666ea1b28a76aeba74744148b15099254d918671Owen Lin * Inflate and return a bitmap for the given appWidgetId. 161666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 162666ea1b28a76aeba74744148b15099254d918671Owen Lin public Bitmap getPhoto(int appWidgetId) { 163666ea1b28a76aeba74744148b15099254d918671Owen Lin Cursor c = null; 164666ea1b28a76aeba74744148b15099254d918671Owen Lin Bitmap bitmap = null; 165666ea1b28a76aeba74744148b15099254d918671Owen Lin try { 166666ea1b28a76aeba74744148b15099254d918671Owen Lin SQLiteDatabase db = getReadableDatabase(); 167666ea1b28a76aeba74744148b15099254d918671Owen Lin String selection = String.format("%s=%d", FIELD_APPWIDGET_ID, 168666ea1b28a76aeba74744148b15099254d918671Owen Lin appWidgetId); 169666ea1b28a76aeba74744148b15099254d918671Owen Lin c = db.query(TABLE_PHOTOS, PHOTOS_PROJECTION, selection, null, 170666ea1b28a76aeba74744148b15099254d918671Owen Lin null, null, null, null); 171666ea1b28a76aeba74744148b15099254d918671Owen Lin 172666ea1b28a76aeba74744148b15099254d918671Owen Lin if (c != null && LOGD) { 173666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.d(TAG, "getPhoto query count=" + c.getCount()); 174666ea1b28a76aeba74744148b15099254d918671Owen Lin } 175666ea1b28a76aeba74744148b15099254d918671Owen Lin 176666ea1b28a76aeba74744148b15099254d918671Owen Lin if (c != null && c.moveToFirst()) { 177666ea1b28a76aeba74744148b15099254d918671Owen Lin byte[] data = c.getBlob(INDEX_PHOTO_BLOB); 178666ea1b28a76aeba74744148b15099254d918671Owen Lin if (data != null) { 179666ea1b28a76aeba74744148b15099254d918671Owen Lin bitmap = BitmapFactory.decodeByteArray(data, 0, 180666ea1b28a76aeba74744148b15099254d918671Owen Lin data.length); 181666ea1b28a76aeba74744148b15099254d918671Owen Lin } 182666ea1b28a76aeba74744148b15099254d918671Owen Lin } 183666ea1b28a76aeba74744148b15099254d918671Owen Lin } catch (SQLiteException e) { 184666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.e(TAG, "Could not load photo from database", e); 185666ea1b28a76aeba74744148b15099254d918671Owen Lin } finally { 186666ea1b28a76aeba74744148b15099254d918671Owen Lin if (c != null) { 187666ea1b28a76aeba74744148b15099254d918671Owen Lin c.close(); 188666ea1b28a76aeba74744148b15099254d918671Owen Lin } 189666ea1b28a76aeba74744148b15099254d918671Owen Lin } 190666ea1b28a76aeba74744148b15099254d918671Owen Lin return bitmap; 191666ea1b28a76aeba74744148b15099254d918671Owen Lin } 192666ea1b28a76aeba74744148b15099254d918671Owen Lin 193666ea1b28a76aeba74744148b15099254d918671Owen Lin /** 194666ea1b28a76aeba74744148b15099254d918671Owen Lin * Remove any bitmap associated with the given appWidgetId. 195666ea1b28a76aeba74744148b15099254d918671Owen Lin */ 196666ea1b28a76aeba74744148b15099254d918671Owen Lin public void deletePhoto(int appWidgetId) { 197666ea1b28a76aeba74744148b15099254d918671Owen Lin try { 198666ea1b28a76aeba74744148b15099254d918671Owen Lin SQLiteDatabase db = getWritableDatabase(); 199666ea1b28a76aeba74744148b15099254d918671Owen Lin String whereClause = String.format("%s=%d", FIELD_APPWIDGET_ID, 200666ea1b28a76aeba74744148b15099254d918671Owen Lin appWidgetId); 201666ea1b28a76aeba74744148b15099254d918671Owen Lin db.delete(TABLE_PHOTOS, whereClause, null); 202666ea1b28a76aeba74744148b15099254d918671Owen Lin } catch (SQLiteException e) { 203666ea1b28a76aeba74744148b15099254d918671Owen Lin Log.e(TAG, "Could not delete photo from database", e); 204666ea1b28a76aeba74744148b15099254d918671Owen Lin } 205666ea1b28a76aeba74744148b15099254d918671Owen Lin } 206666ea1b28a76aeba74744148b15099254d918671Owen Lin } 207666ea1b28a76aeba74744148b15099254d918671Owen Lin 208666ea1b28a76aeba74744148b15099254d918671Owen Lin} 209666ea1b28a76aeba74744148b15099254d918671Owen Lin 210