在应用图标

Question

我刚刚注意到，当我创建通知时，其他手机上的应用图标上没有通知徽章，只有版本4.4及以下通知栏中的通知。

我想在各种Android版本的app图标上显示红色通知徽章，就像下面的截图一样：

以下是我用于显示通知的代码，基本上用户会在通知栏上收到通知，但不会在应用中收到红色徽章编号：

private void sendNotification(NotificationVM source) {
    Intent intent = new Intent(this, NotificationActivity.class);
    intent.putExtra(IntentPutNameConstant.NotificationActivity.NOTIFICATION_ID, source.getNotificationId());
    intent.putExtra(IntentPutNameConstant.NotificationActivity.NOTIFICATION_TYPE, source.getNotificationType());
    intent.putExtra(IntentPutNameConstant.NotificationActivity.USER_FROM_USERNAME, source.getUserFrom().getUsername());
    intent.putExtra(IntentPutNameConstant.NotificationActivity.MESSAGE, source.getMessage());
    intent.putExtra(IntentPutNameConstant.NotificationActivity.SOURCE_ID, source.getSourceId());
    intent.putExtra(IntentPutNameConstant.NotificationActivity.EXTERNAL_URL, source.getExternalUrl());

    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);


    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
            PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_app_launcher_72)
            .setContentTitle("Investagrams")
            .setContentText(source.getMessage())
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    //Vibration
    notificationBuilder.setVibrate(new long[] { 0, 200, 200, 200, 200, 200 });


    //LED
    //notificationBuilder.setLights(Color.RED, 3000, 3000);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    Notification notif = notificationBuilder.build();
    notif.flags |= Notification.FLAG_AUTO_CANCEL;

    /*notif.ledARGB = 0xFFff0000;
    notif.flags = Notification.FLAG_SHOW_LIGHTS;
    notif.ledOnMS = 100;
    notif.ledOffMS = 100;*/

    notificationManager.notify((int)source.getNotificationId() /* ID of notification */, notif);

}

Answer 1

这是设备制造商特定的。具有此功能的设备会自动执行此操作。它计算当时显示的通知总数并显示该数字。