NotificationHelperpublic class NotificationHelper extends android.content.BroadcastReceiver | Keeps track of a notification and updates it automatically for a given
MediaSession. |
| Fields Summary |
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| private static final String | TAG | | private static final int | NOTIFICATION_ID | | private final android.app.Service | mService | | private final android.media.session.MediaSession | mSession | | private final android.media.session.MediaController | mController | | private final MediaController.TransportControls | mTransportControls | | private final android.util.SparseArray | mIntents | | private android.media.session.PlaybackState | mPlaybackState | | private android.media.MediaMetadata | mMetadata | | private boolean | mStarted | | private final MediaController.Callback | mCb | | android.app.NotificationManager | mNoMan |
| Constructors Summary |
|---|
public NotificationHelper(android.app.Service service, android.media.session.MediaSession session)
mService = service;
mSession = session;
mController = session.getController();
mTransportControls = mController.getTransportControls();
String pkg = mService.getPackageName();
mIntents.put(R.drawable.ic_pause, PendingIntent.getBroadcast(mService, 100, new Intent(
com.android.onemedia.playback.RequestUtils.ACTION_PAUSE).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
mIntents.put(R.drawable.ic_play_arrow, PendingIntent.getBroadcast(mService, 100,
new Intent(com.android.onemedia.playback.RequestUtils.ACTION_PLAY).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
mIntents.put(R.drawable.ic_skip_previous, PendingIntent.getBroadcast(mService, 100,
new Intent(com.android.onemedia.playback.RequestUtils.ACTION_PREV).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
mIntents.put(R.drawable.ic_skip_next, PendingIntent.getBroadcast(mService, 100,
new Intent(com.android.onemedia.playback.RequestUtils.ACTION_NEXT).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
mIntents.put(R.drawable.ic_fast_rewind, PendingIntent.getBroadcast(mService, 100,
new Intent(com.android.onemedia.playback.RequestUtils.ACTION_REW).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
mIntents.put(R.drawable.ic_fast_forward, PendingIntent.getBroadcast(mService, 100,
new Intent(com.android.onemedia.playback.RequestUtils.ACTION_FFWD).setPackage(pkg),
PendingIntent.FLAG_CANCEL_CURRENT));
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| Methods Summary |
|---|
| public void | onReceive(android.content.Context context, android.content.Intent intent)
final String action = intent.getAction();
Log.d(TAG, "Received intent with action " + action);
if (RequestUtils.ACTION_PAUSE.equals(action)) {
mTransportControls.pause();
} else if (RequestUtils.ACTION_PLAY.equals(action)) {
mTransportControls.play();
} else if (RequestUtils.ACTION_NEXT.equals(action)) {
mTransportControls.skipToNext();
} else if (RequestUtils.ACTION_PREV.equals(action)) {
mTransportControls.skipToPrevious();
} else if (RequestUtils.ACTION_REW.equals(action)) {
mTransportControls.rewind();
} else if (RequestUtils.ACTION_FFWD.equals(action)) {
mTransportControls.fastForward();
}
| | public void | onStart()Posts the notification and starts tracking the session to keep it
updated. The notification will automatically be removed if the session is
destroyed before {@link #onStop} is called.
mController.registerCallback(mCb);
IntentFilter filter = new IntentFilter();
filter.addAction(RequestUtils.ACTION_FFWD);
filter.addAction(RequestUtils.ACTION_NEXT);
filter.addAction(RequestUtils.ACTION_PAUSE);
filter.addAction(RequestUtils.ACTION_PLAY);
filter.addAction(RequestUtils.ACTION_PREV);
filter.addAction(RequestUtils.ACTION_REW);
mService.registerReceiver(this, filter);
mMetadata = mController.getMetadata();
mPlaybackState = mController.getPlaybackState();
mStarted = true;
// The notification must be updated after setting started to true
updateNotification();
| | public void | onStop()Removes the notification and stops tracking the session. If the session
was destroyed this has no effect.
mStarted = false;
mController.unregisterCallback(mCb);
mService.unregisterReceiver(this);
updateNotification();
| | private void | updateNotification()
if (mNoMan == null) {
mNoMan = (NotificationManager) mService.getSystemService(Context.NOTIFICATION_SERVICE);
}
if (mPlaybackState == null) {
mNoMan.cancel(NOTIFICATION_ID);
return;
}
if (!mStarted) {
mNoMan.cancel(NOTIFICATION_ID);
return;
}
String status;
final int state = mPlaybackState.getState();
switch (state) {
case PlaybackState.STATE_PLAYING:
status = "PLAYING: ";
break;
case PlaybackState.STATE_PAUSED:
status = "PAUSED: ";
break;
case PlaybackState.STATE_STOPPED:
status = "STOPPED: ";
break;
case PlaybackState.STATE_ERROR:
status = "ERROR: ";
break;
case PlaybackState.STATE_BUFFERING:
status = "BUFFERING: ";
break;
case PlaybackState.STATE_NONE:
default:
status = "";
break;
}
CharSequence title, text;
Bitmap art;
if (mMetadata == null) {
title = status;
text = "Empty metadata!";
art = null;
} else {
MediaDescription description = mMetadata.getDescription();
title = description.getTitle();
text = description.getSubtitle();
art = description.getIconBitmap();
}
String playPauseLabel = "";
int playPauseIcon;
if (state == PlaybackState.STATE_PLAYING) {
playPauseLabel = "Pause";
playPauseIcon = R.drawable.ic_pause;
} else {
playPauseLabel = "Play";
playPauseIcon = R.drawable.ic_play_arrow;
}
final long pos = mPlaybackState.getPosition();
final long end = mMetadata == null ? 0 : mMetadata
.getLong(MediaMetadata.METADATA_KEY_DURATION);
Notification notification = new Notification.Builder(mService)
.setSmallIcon(android.R.drawable.stat_notify_chat)
.setContentTitle(title)
.setContentText(text)
.setShowWhen(false)
.setContentInfo(DateUtils.formatElapsedTime(pos))
.setProgress((int) end, (int) pos, false)
.setLargeIcon(art)
.addAction(R.drawable.ic_skip_previous, "Previous",
mIntents.get(R.drawable.ic_skip_previous))
.addAction(R.drawable.ic_fast_rewind, "Rewind",
mIntents.get(R.drawable.ic_fast_rewind))
.addAction(playPauseIcon, playPauseLabel,
mIntents.get(playPauseIcon))
.addAction(R.drawable.ic_fast_forward, "Fast Forward",
mIntents.get(R.drawable.ic_fast_forward))
.addAction(R.drawable.ic_skip_next, "Next",
mIntents.get(R.drawable.ic_skip_next))
.setStyle(new Notification.MediaStyle()
.setShowActionsInCompactView(2)
.setMediaSession(mSession.getSessionToken()))
.setColor(0xFFDB4437)
.build();
mService.startForeground(NOTIFICATION_ID, notification);
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