2 * Copyright (C) 2009 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.android.music;
19 import android.app.PendingIntent;
20 import android.appwidget.AppWidgetManager;
21 import android.appwidget.AppWidgetProvider;
22 import android.content.BroadcastReceiver;
23 import android.content.ComponentName;
24 import android.content.Context;
25 import android.content.Intent;
26 import android.content.res.Resources;
27 import android.graphics.Bitmap;
28 import android.graphics.BitmapFactory;
29 import android.graphics.Canvas;
30 import android.graphics.Paint;
31 import android.graphics.PorterDuff;
32 import android.graphics.PorterDuffXfermode;
33 import android.graphics.Rect;
34 import android.media.MediaFile;
35 import android.os.Environment;
36 import android.os.SystemClock;
37 import android.util.Config;
38 import android.util.Log;
39 import android.view.View;
40 import android.widget.RemoteViews;
43 * Simple widget to show currently playing album art along
44 * with play/pause and next track buttons.
46 public class MediaAppWidgetProvider extends AppWidgetProvider {
47 static final String TAG = "MusicAppWidgetProvider";
49 public static final String CMDAPPWIDGETUPDATE = "appwidgetupdate";
51 static final ComponentName THIS_APPWIDGET =
52 new ComponentName("com.android.music",
53 "com.android.music.MediaAppWidgetProvider");
55 private static MediaAppWidgetProvider sInstance;
57 static synchronized MediaAppWidgetProvider getInstance() {
58 if (sInstance == null) {
59 sInstance = new MediaAppWidgetProvider();
65 public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
66 defaultAppWidget(context, appWidgetIds);
68 // Send broadcast intent to any running MediaPlaybackService so it can
69 // wrap around with an immediate update.
70 Intent updateIntent = new Intent(MediaPlaybackService.SERVICECMD);
71 updateIntent.putExtra(MediaPlaybackService.CMDNAME,
72 MediaAppWidgetProvider.CMDAPPWIDGETUPDATE);
73 updateIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
74 updateIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
75 context.sendBroadcast(updateIntent);
79 * Initialize given widgets to default state, where we launch Music on default click
80 * and hide actions if service not running.
82 private void defaultAppWidget(Context context, int[] appWidgetIds) {
83 final Resources res = context.getResources();
84 final RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.album_appwidget);
86 views.setTextViewText(R.id.title, res.getText(R.string.emptyplaylist));
88 linkButtons(context, views, false /* not playing */);
89 pushUpdate(context, appWidgetIds, views);
92 private void pushUpdate(Context context, int[] appWidgetIds, RemoteViews views) {
93 // Update specific list of appWidgetIds if given, otherwise default to all
94 final AppWidgetManager gm = AppWidgetManager.getInstance(context);
95 if (appWidgetIds != null) {
96 gm.updateAppWidget(appWidgetIds, views);
98 gm.updateAppWidget(THIS_APPWIDGET, views);
103 * Check against {@link AppWidgetManager} if there are any instances of this widget.
105 private boolean hasInstances(Context context) {
106 AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
107 int[] appWidgetIds = appWidgetManager.getAppWidgetIds(THIS_APPWIDGET);
108 return (appWidgetIds.length > 0);
112 * Handle a change notification coming over from {@link MediaPlaybackService}
114 void notifyChange(MediaPlaybackService service, String what) {
115 if (hasInstances(service)) {
116 if (MediaPlaybackService.PLAYBACK_COMPLETE.equals(what) ||
117 MediaPlaybackService.META_CHANGED.equals(what) ||
118 MediaPlaybackService.PLAYSTATE_CHANGED.equals(what)) {
119 performUpdate(service, null);
125 * Update all active widget instances by pushing changes
127 void performUpdate(MediaPlaybackService service, int[] appWidgetIds) {
128 final Resources res = service.getResources();
129 final RemoteViews views = new RemoteViews(service.getPackageName(), R.layout.album_appwidget);
131 final int track = service.getQueuePosition() + 1;
132 final String titleName = service.getTrackName();
133 final String artistName = service.getArtistName();
135 // Format title string with track number, or show SD card message
136 CharSequence titleString = "";
137 String status = Environment.getExternalStorageState();
138 if (titleName != null) {
139 titleString = res.getString(R.string.gadget_track_num_title, track, titleName);
140 } else if (status.equals(Environment.MEDIA_SHARED) ||
141 status.equals(Environment.MEDIA_UNMOUNTED)) {
142 titleString = res.getText(R.string.sdcard_busy_title);
143 } else if (status.equals(Environment.MEDIA_REMOVED)) {
144 titleString = res.getText(R.string.sdcard_missing_title);
146 titleString = res.getText(R.string.emptyplaylist);
149 views.setTextViewText(R.id.title, titleString);
150 views.setTextViewText(R.id.artist, artistName);
152 // Set correct drawable for pause state
153 final boolean playing = service.isPlaying();
154 views.setImageViewResource(R.id.control_play, playing ?
155 R.drawable.appwidget_pause : R.drawable.appwidget_play);
157 // Link actions buttons to intents
158 linkButtons(service, views, playing);
160 pushUpdate(service, appWidgetIds, views);
164 * Link up various button actions using {@link PendingIntents}.
166 * @param playerActive True if player is active in background, which means
167 * widget click will launch {@link MediaPlaybackActivity},
168 * otherwise we launch {@link MusicBrowserActivity}.
170 private void linkButtons(Context context, RemoteViews views, boolean playerActive) {
171 // Connect up various buttons and touch events
173 PendingIntent pendingIntent;
175 final ComponentName serviceName = new ComponentName(context, MediaPlaybackService.class);
178 intent = new Intent(context, MediaPlaybackActivity.class);
179 pendingIntent = PendingIntent.getActivity(context,
180 0 /* no requestCode */, intent, 0 /* no flags */);
181 views.setOnClickPendingIntent(R.id.album_appwidget, pendingIntent);
183 intent = new Intent(context, MusicBrowserActivity.class);
184 pendingIntent = PendingIntent.getActivity(context,
185 0 /* no requestCode */, intent, 0 /* no flags */);
186 views.setOnClickPendingIntent(R.id.album_appwidget, pendingIntent);
189 intent = new Intent(MediaPlaybackService.TOGGLEPAUSE_ACTION);
190 intent.setComponent(serviceName);
191 pendingIntent = PendingIntent.getService(context,
192 0 /* no requestCode */, intent, 0 /* no flags */);
193 views.setOnClickPendingIntent(R.id.control_play, pendingIntent);
195 intent = new Intent(MediaPlaybackService.NEXT_ACTION);
196 intent.setComponent(serviceName);
197 pendingIntent = PendingIntent.getService(context,
198 0 /* no requestCode */, intent, 0 /* no flags */);
199 views.setOnClickPendingIntent(R.id.control_next, pendingIntent);