问题描述
下面的代码适用于带有使用媒体会话的控件的音乐通知播放器。每当我单击通知中的控件时，它都会因上述错误而崩溃。如果我错了，请查看下面的代码并纠正我。在下面的代码中，我使用了媒体会话和广播接收器来构建通知。 “track”是我所有歌曲数据的模型类。
try {
if (track.getimage() == null) {
track.setimage(BitmapFactory.decodeResource(context.getResources(),R.mipmap.ic_launcher));
}
notificationmanagerCompat notificationmanagerCompat = notificationmanagerCompat.from(context);
MediaSessionCompat mediaSessionCompat = new MediaSessionCompat(context,"tag");
mediaSessionCompat.setMetadata(
new MediaMetadataCompat.Builder()
.putString(MediaMetadata.MetaDATA_KEY_TITLE,track.getTitle())
.putString(MediaMetadata.MetaDATA_KEY_ARTIST,track.getArtist())
.putBitmap(MediaMetadata.MetaDATA_KEY_ALBUM_ART,track.getimage())
.putString(MediaMetadata.MetaDATA_KEY_ALBUM,track.getAlbum())
.build()
);
mediaSessionCompat.setFlags(
MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
PlaybackStateCompat.Builder stateBuilder = new PlaybackStateCompat.Builder();
stateBuilder.setActiveQueueItemId(MediaSession.QueueItem.UNKNowN_ID);
long actions = PlaybackStateCompat.ACTION_PLAY_PAUSE | PlaybackStateCompat.ACTION_STOP | PlaybackStateCompat.ACTION_SKIP_TO_NEXT | PlaybackStateCompat.ACTION_SKIP_TO_PREVIoUS;
stateBuilder.setActions(actions);
if (isPlaying) {
stateBuilder.setState(PlaybackStateCompat.STATE_PLAYING,1.0f);
mediaSessionCompat.setActive(true);
} else {
stateBuilder.setState(PlaybackStateCompat.STATE_PAUSED,1.0f);
mediaSessionCompat.setActive(true);
}
mediaSessionCompat.setPlaybackState(stateBuilder.build());
Bitmap icon = track.getimage();
PendingIntent pendingIntentPrevIoUs;
int drw_prevIoUs;
// pendingIntentPrevIoUs = null;
// drw_prevIoUs = 0;
Intent intentPrevIoUs = new Intent(context,NotificationActionService.class)
.setAction(ACTION_PREVIUOS);
pendingIntentPrevIoUs = PendingIntent.getbroadcast(context,intentPrevIoUs,PendingIntent.FLAG_UPDATE_CURRENT);
drw_prevIoUs = R.drawable.ic_back;
Intent intentPlay = new Intent(context,NotificationActionService.class)
.setAction(ACTION_PLAY);
PendingIntent pendingIntentPlay = PendingIntent.getbroadcast(context,intentPlay,PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent pendingIntentNext;
int drw_next;
// pendingIntentNext = null;
// drw_next = 0;
Intent intentNext = new Intent(context,NotificationActionService.class)
.setAction(ACTION_NEXT);
pendingIntentNext = PendingIntent.getbroadcast(context,intentNext,PendingIntent.FLAG_UPDATE_CURRENT);
drw_next = R.drawable.ic_next;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notification = new NotificationCompat.Builder(context,CHANNEL_ID)
.setSmallIcon(R.drawable.logo)
.setContentTitle(track.getTitle())
.setContentText(track.getArtist())
.setLargeIcon(icon)
.setAutoCancel(isPlaying ? false : true)
.setongoing(isPlaying ? true : false)
.setWhen(0)
.setNotificationSilent()
.setSound(null)
.addAction(drw_prevIoUs,"PrevIoUs",pendingIntentPrevIoUs)
.addAction(playbutton,"Play",pendingIntentPlay)
.addAction(drw_next,"Next",pendingIntentNext)
.setStyle(new androidx.media.app.NotificationCompat.MediaStyle()
.setShowActionsInCompactView(0,1,2)
.setMediaSession(mediaSessionCompat.getSessionToken()))
.setPriority(NotificationCompat.PRIORITY_LOW)
.build();
} else {
notification = new NotificationCompat.Builder(context,CHANNEL_ID)
.setSmallIcon(R.drawable.logo)
.setContentTitle(track.getTitle())
.setContentText(track.getArtist())
.setLargeIcon(icon)
.setAutoCancel(true)
.setongoing(false)
.setWhen(0)
.setNotificationSilent()
.setSound(null)
.addAction(drw_prevIoUs,2)
.setMediaSession(mediaSessionCompat.getSessionToken()))
.setPriority(NotificationCompat.PRIORITY_LOW)
.build();
}
notificationmanagerCompat.notify(1,notification);
} catch (Exception e) {
Log.e("media sesison",e.getLocalizedMessage());
}
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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