动态更新通知的操作图标

Question

我为播放器设置了一个通知，我想在播放后更新图标或暂停通知中的操作。 这是我的通知代码。

    private void showNotification(String title, Bitmap bitmap) {

    //region Create Notification
    MediaSessionCompat mediaSession = new MediaSessionCompat(getApplicationContext(), "session tag");
    MediaSessionCompat.Token token = mediaSession.getSessionToken();
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this,"PRIMARY_CHANNEL")
             .setSmallIcon(R.mipmap.ic_launcher_1)
             .setLargeIcon(bitmap)
             .setContentTitle("Simplay")
             .setContentText(title)
             .setOngoing(true)
             .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
            .setContentIntent(notifyPendingIntent)
             .addAction(R.drawable.exo_controls_rewind,"",rewindPendingIntent)
             **.addAction( R.drawable.exo_controls_pause,"",playPendingIntent)**
             .addAction(R.drawable.exo_controls_fastforward,"",forwardPendingIntent)
             .setStyle(new android.support.v4.media.app.NotificationCompat.MediaStyle()
             .setMediaSession(token))
             .setPriority(NotificationCompat.PRIORITY_HIGH);

    notificationManager = NotificationManagerCompat.from(this);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        CharSequence name = "Notification";
        String description = "";
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel channel = new NotificationChannel("PRIMARY_CHANNEL", name, importance);
        channel.setDescription(description);
        channel.enableLights(true);
        channel.setShowBadge(false);
        channel.setLockscreenVisibility(123);
        NotificationManager notificationManager1 = getSystemService(NotificationManager.class);
        notificationManager1.createNotificationChannel(channel);
    }
    notificationManager.notify(123, mBuilder.build());
    //endregion
}

Answer 1

您应该使用

.addAction(getResources.getDrawable(R.drawable.exo_controls_pause),"",playPendingIntent)

Answer 2

解决方案 要实时更改操作图标，您需要：

1. 获取并替换操作。
2. 推送新通知。

例如：

notificationBuilder.actions[1] = new Notification.Action(R.drawable.pause, "play", pendingIntent);

NotificationManager service = ((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE));
service.notify(101, notificationBuilder);

或

notificationBuilder.actions[1] = new Notification.Action(R.drawable.pause, "play", pendingIntent);
startForeground(101, notificationBuilder);