我尝试使用此link实现Media Style Notification
。但是,当我最近更新到Android 5.0 SDK时,createSession
方法不起作用。
mMediaPlayer = new MediaPlayer();
mManager = (MediaSessionManager) getSystemService(Context.MEDIA_SESSION_SERVICE);
mSession = mManager.createSession("sample session"); //shows compile error
mController = MediaController.fromToken( mSession.getSessionToken() );
还有其他需要使用的方法吗?当我检查更改日志时,它说
createSession
不再使用。那么,实现此类媒体样式通知的替代方案是什么。 最佳答案
您不再使用MediaController.fromToken
,而是使用 MediaSessin.getController
。
并且您不再使用MediaSessionManager.createSession
,而是仅创建一个新的MediaSession
对象和 MediaSession.getSessionToken
来检索您的 MediaSession.Token
。
一个非常基本的示例实现可能类似于:
private static final String ACTION_TOGGLE_PLAYBACK = "com.your.package.name.TOGGLE_PLAYBACK";
private static final String ACTION_PREV = "com.your.package.name.PREV";
private static final String ACTION_NEXT = "com.your.package.name.NEXT";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
final Bitmap artwork = ...;
// Create a new MediaSession
final MediaSession mediaSession = new MediaSession(this, "debug tag");
// Update the current metadata
mediaSession.setMetadata(new MediaMetadata.Builder()
.putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, artwork)
.putString(MediaMetadata.METADATA_KEY_ARTIST, "Pink Floyd")
.putString(MediaMetadata.METADATA_KEY_ALBUM, "Dark Side of the Moon")
.putString(MediaMetadata.METADATA_KEY_TITLE, "The Great Gig in the Sky")
.build());
// Indicate you're ready to receive media commands
mediaSession.setActive(true);
// Attach a new Callback to receive MediaSession updates
mediaSession.setCallback(new MediaSession.Callback() {
// Implement your callbacks
});
// Indicate you want to receive transport controls via your Callback
mediaSession.setFlags(MediaSession.FLAG_HANDLES_TRANSPORT_CONTROLS);
// Create a new Notification
final Notification noti = new Notification.Builder(this)
// Hide the timestamp
.setShowWhen(false)
// Set the Notification style
.setStyle(new Notification.MediaStyle()
// Attach our MediaSession token
.setMediaSession(mediaSession.getSessionToken())
// Show our playback controls in the compat view
.setShowActionsInCompactView(0, 1, 2))
// Set the Notification color
.setColor(0xFFDB4437)
// Set the large and small icons
.setLargeIcon(artwork)
.setSmallIcon(R.drawable.your_small_icon)
// Set Notification content information
.setContentText("Pink Floyd")
.setContentInfo("Dark Side of the Moon")
.setContentTitle("The Great Gig in the Sky")
// Add some playback controls
.addAction(R.drawable.your_prev_icon, "prev", retreivePlaybackAction(3))
.addAction(R.drawable.your_pause_icon, "pause", retreivePlaybackAction(1))
.addAction(R.drawable.your_next_icon, "next", retreivePlaybackAction(2))
.build();
// Do something with your TransportControls
final TransportControls controls = mediaSession.getController().getTransportControls();
((NotificationManager) getSystemService(NOTIFICATION_SERVICE)).notify(1, noti);
}
private PendingIntent retreivePlaybackAction(int which) {
Intent action;
PendingIntent pendingIntent;
final ComponentName serviceName = new ComponentName(this, YourPlaybackService.class);
switch (which) {
case 1:
// Play and pause
action = new Intent(ACTION_TOGGLE_PLAYBACK);
action.setComponent(serviceName);
pendingIntent = PendingIntent.getService(this, 1, action, 0);
return pendingIntent;
case 2:
// Skip tracks
action = new Intent(ACTION_NEXT);
action.setComponent(serviceName);
pendingIntent = PendingIntent.getService(this, 2, action, 0);
return pendingIntent;
case 3:
// Previous tracks
action = new Intent(ACTION_PREV);
action.setComponent(serviceName);
pendingIntent = PendingIntent.getService(this, 3, action, 0);
return pendingIntent;
default:
break;
}
return null;
}
结果
关于java - 媒体样式通知在更新到Android 5.0后无法正常工作,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/27209596/