android推送通知显示空白内容

Question

我在 android 中使用谷歌云消息传递显示警报。它在某些设备和模拟器中工作，但不适用于所有设备，如 Samsunng Galaxy Grand 和我的一些模拟器，它只显示图标和通知的标题，同时消息是空白的。

mNotificationManager = (NotificationManager) this
            .getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MyActivity.class), 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            this).setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("Siom Alert")//TITLE CAN BE TSKEN FROM HERE
            .setStyle(new NotificationCompat.BigTextStyle().bigText(mes))
            .setContentText(mes);

    mBuilder.setContentIntent(contentIntent);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());

Answer 1

试试这段代码。

 private void generateNotification(Context context, String message) {
        long when = System.currentTimeMillis();
        NotificationManager notificationManager = (NotificationManager)   context.getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification = new Notification(R.drawable.ic_launcher, message, when);         
        String title = "New POC Alert";         
        Intent notificationIntent = new Intent(context, null);
        // set intent so it does not start a new activity
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
        notification.setLatestEventInfo(context, title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        // Play default notification sound
        notification.defaults |= Notification.DEFAULT_SOUND;

        // Vibrate if vibrate is enabled
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notificationManager.notify(0, notification);
    }

//Mainfest权限

<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="vibrate" />