如何使用支持库v25显示音乐播放器通知

implementation 'com.android.support:appcompat-v7:25.0.0'
implementation 'com.android.support:support-v4:25.0.0'

NotificationCompat.Builder builder = new NotificationCompat.Builder(context);

builder.setContentTitle("音乐播放器");
builder.setContentText("正在播放音乐");
builder.setSmallIcon(R.drawable.music_icon);

Intent intent = new Intent(context, PlayerActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);

MediaSessionCompat mediaSession = new MediaSessionCompat(context, "tag");
builder.setStyle(new NotificationCompat.MediaStyle().setMediaSession(mediaSession.getSessionToken()));

NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(notificationId, builder.build());