title: FlutterLocal Notification (Insistent notification)
body: <p>How to make the notification ring even after notification window is opened.The notification should only stop when i tap it just like whatsapp call or alarm.
  My snippet of FlutterLocalNotification package.</p>
  <p>Here the notification rings continuously until and unless i slide down to see the notification. I want it to ring until and unless i tap on it. How to do it . Pls help?</p>
  <pre><code>AndroidNotificationDetails(
          'high_importance_channel',
          'uri channel name',
          'uri channel description',
          category: 'call',
          ticker: 'ticker',
          playSound: true,
          sound: RawResourceAndroidNotificationSound('bebuzeering'),
          // sound: UriAndroidNotificationSound(
          //     await platform.invokeMethod&lt;String&gt;('getAlarmUri')),
          // ongoing: true,
          channelAction: AndroidNotificationChannelAction.update,
          enableVibration: true,
          enableLights: true,
          icon: null,
          autoCancel: false,
          onlyAlertOnce: false,
          visibility: NotificationVisibility.private,
          priority: Priority.high,
          importance: Importance.high,
          additionalFlags: Int32List.fromList([4]),
          fullScreenIntent: true,
          styleInformation: const DefaultStyleInformation(true, true));
  </code></pre>