我有一个通知,支持播放、暂停、快进和后退。
private static Notification createNotification(String interpret, String title, boolean paused) {
// if (builder == null)
builder = new NotificationCompat.Builder(context);
builder.setPriority(Notification.PRIORITY_MAX);
builder.setAutoCancel(false);
builder.setContentTitle(title);
builder.setContentText(interpret);
builder.setOngoing(true);
builder.setOnlyAlertOnce(true);
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setContentIntent(PendingIntent.getActivity(context, 9, new Intent(context, ApplicationActivity.class), Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT));
builder.addAction(R.drawable.av_previous, "", PendingIntent.getBroadcast(context.getApplicationContext(), 0, new Intent(NotificationPlayerControlReceiver.MUSIC_PLAYER_INTENT).putExtra("resultcode", NotificationPlayerControlReceiver.PREVIOUS), PendingIntent.FLAG_CANCEL_CURRENT));
if (paused)
builder.addAction(R.drawable.av_play, "", PendingIntent.getBroadcast(context.getApplicationContext(), 2, new Intent(NotificationPlayerControlReceiver.MUSIC_PLAYER_INTENT).putExtra("resultcode", NotificationPlayerControlReceiver.PLAY), PendingIntent.FLAG_CANCEL_CURRENT));
else
builder.addAction(R.drawable.av_pause, "", PendingIntent.getBroadcast(context.getApplicationContext(), 3, new Intent(NotificationPlayerControlReceiver.MUSIC_PLAYER_INTENT).putExtra("resultcode", NotificationPlayerControlReceiver.PAUSE), PendingIntent.FLAG_CANCEL_CURRENT));
builder.addAction(R.drawable.av_next, "", PendingIntent.getBroadcast(context.getApplicationContext(), 1, new Intent(NotificationPlayerControlReceiver.MUSIC_PLAYER_INTENT).putExtra("resultcode", NotificationPlayerControlReceiver.NEXT), PendingIntent.FLAG_CANCEL_CURRENT));
Notification notification = builder.build();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
notification.tickerView = null;
return notification;
}
更新通知:
public static void update(String interpret, String title, boolean paused) {
NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(0, createNotification(interpret, title, paused));
}
为避免更新时的闪烁,我已将构建器设置为全局变量并在每次更新时重复使用它,这很有效。但是重复使用它意味着我添加的所有按钮也会被重复使用,没有可能删除之前添加的操作。只有在每次更新时重新初始化NotificationCompat.Builder,按钮才能更改,这意味着我会再次出现闪烁。
如何避免闪烁,同时让按钮更改?
编辑: 刚刚查看了Rocket Player,他们也没有解决问题,但Google Play Music解决了问题。