title: Flutter local notification body not showing all notification text (flutter_local_notifications package)
body: <p>I used <code>flutter_local_notifications: ^0.7.1+3</code> in my Flutter app to push schedule notifications. All is well in this but the problem in my notification body is that it shows just one line of text, and I can't expand or stretch notification to show all the notification body text.</p>
  
  <p>This is my try:</p>
  
  <pre class="lang-dart prettyprint-override"><code>class NotificationUtil {
    final notifications = FlutterLocalNotificationsPlugin();
    final int checkOutNotifyId = 0;
  
    NotificationUtil(BuildContext context) {
      final settingsAndroid = AndroidInitializationSettings('ic_notify_icon');
      final settingsIOS = IOSInitializationSettings(
          onDidReceiveLocalNotification: (id, title, body, payload) =&gt;
              onSelectNotification(context));
      notifications.initialize(
          InitializationSettings(settingsAndroid, settingsIOS),
          onSelectNotification: (context) async =&gt; onSelectNotification);
    }
  
    Future&lt;void&gt; showCheckOutNotify([int maximumCheckoutHours]) async {
      await notifications.periodicallyShow(
          checkOutNotifyId,
          AttendanceConstants.SCHEDULE_NOTIFICATION_TITLE,
          AttendanceConstants.SCHEDULE_NOTIFICATION_BODY +
              '$maximumCheckoutHours Hour/s of your attendance',
          RepeatInterval.Hourly,
          _ongoing);
    }
  
    NotificationDetails get _ongoing {
      final androidChannelSpecifics = AndroidNotificationDetails(
        'your channel id',
        'your channel name',
        'your channel description',
        importance: Importance.Max,
        priority: Priority.High,
        ongoing: true,
      );
      final iOSChannelSpecifics = IOSNotificationDetails();
      return NotificationDetails(androidChannelSpecifics, iOSChannelSpecifics);
    }
  </code></pre>