如何避免闪烁通知更新而变化的按钮 [英] How can I avoid blinking notification update while changing button

问题描述

我有一个通知，它支持播放，暂停前进和后退。

I have a Notification, which supports play,pause forward and back.

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));
}

要避免闪烁的更新，从来就设置生成器的全局变量，我重新使用它的每一次更新，它的伟大工程。但重新使用，意味着也所有按钮从来就添加的重复使用，并且没有可能去除操作从来就加入之前

To avoid blinking on update, I´ve set the builder to a global variable and I reuse it on every update, which works great. but reusing it, means that also all buttons I´ve added are reused and there is no possibility to remove Actions I´ve added before.

按钮的变化仅适用，如果我重新初始化NotificationCompat.Builder的每次更新，这意味着我得到再次闪烁。

The button change only works, if I reinitialize the NotificationCompat.Builder on every update, which means I get the blinking again.

如何避免闪烁，但让按钮的​​变化？

How do I avoid blinking, but letting the button change?

编辑： 刚刚签出火箭球员，他们didn't解决的问题太多，但谷歌播放音乐确实

Just checked out Rocket Player, they didn´t solve the problem too, but Google Play Music did

推荐答案

像鲍里斯说，问题是，新的通知将打造每一次更新。 我的解决方案涵盖了相同的逻辑，但是我用的是 NotificationBuilder ...

Like Boris said, the problem is that a new notification will be build every update. My solution covers the same logic, but I use the NotificationBuilder...

这里是code：

if (mNotificationBuilder == null) {
            mNotificationBuilder = new NotificationCompat.Builder(this)
                    .setSmallIcon(iconId)
                    .setContentTitle(title)
                    .setContentText(message)
                    .setLargeIcon(largeIcon)
                    .setOngoing(true)
                    .setAutoCancel(false);
        } else {
            mNotificationBuilder.setContentTitle(title)
                    .setContentText(message);
        }

记住 mNotificationBuilder 是在类的私人领域。

keep in mind that mNotificationBuilder is a private field in the class.

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