當我的警報管理器觸發我的 onReceive() 方法時，我試圖彈出一個通知。這就是我所做的@Overridepublic void onReceive(Context context, Intent intent) {    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "YOUR TAG");    //Acquire the lock    wl.acquire(10000);    startNotification(context);    wl.release();}public void setAlarm(Context context){    AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);    Intent intent = new Intent(context, AlarmManagerBroadcastReceiver.class);    intent.putExtra(Activity, "MainActivity.class");    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);    assert am != null;    am.set(AlarmManager.RTC_WAKEUP, 60000, pi);}private void startNotification(Context context){    // Sets an ID for the notification    int mNotificationId = 001;    NotificationManager notificationManager;    NotificationCompat.Builder mBuilder;            // Build Notification , setOngoing keeps the notification always in status bar    mBuilder =            new NotificationCompat.Builder(context)                    .setSmallIcon(R.drawable.ic_launcher_foreground)                    .setContentTitle("RandomTitle")                    .setContentText("RandomText")                    .setOngoing(true);    // Create pending intent, mention the Activity which needs to be    //triggered when user clicks on notification(StopScript.class in this case)    Intent notificationIntent = new Intent(context, MainActivity.class);    notificationIntent.putExtra("extra","Extra Notificacion");    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |            Intent.FLAG_ACTIVITY_SINGLE_TOP);    PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent , PendingIntent.FLAG_UPDATE_CURRENT);我真的很困惑為什么這個通知沒有顯示，我已經測試了我的警報，它在創建 1 分鐘后觸發，但通知仍然沒有顯示。有任何想法嗎？