Local notifications not working when app is breaked on Huawei device [Xamarin.Android]

Question

I have created a Xamarin.Forms app, but I am oriented to android platform. I have released the app in 2 devices: Samsung (Android 6.0 API 23) and Huawei (Android 6.0 API 23), the problem is on the huawei device, which when I want to create a local notification that it needs to be displayed when app is breaked, (by creating a broadcast receiver, etc) it is not displayed, otherwise on samsung it is, im sure that the problem is not on the code (is obvious, the code is not specialized on an specific device), so I believe more that the problem is on my huawei device, any suggestions for this problem??

CODE FOR CREATING THE NOTIFICATIONS

Method that is called when user click on “notify button” to shedule repeated notificacions:

 public static void EstablishNotification(long startSeconds)
            => alarmManager.SetRepeating(
                AlarmType.ElapsedRealtimeWakeup,
                SystemClock.ElapsedRealtime() + (startSeconds * 1000),
                3600 * 1000, pendingIntent);

Broadcast receiver on binded to intent on alarm manager

public override void OnReceive(Context context, Intent intent)
        {
            if (intent?.Extras != null)
            {
                title = intent.Extras.GetString(AndroidNotificationManager.TitleKey);
                message = intent.Extras.GetString(AndroidNotificationManager.MessageKey);
            }

            var id = intent.Extras.GetInt(AndroidNotificationManager.ID);

            Intent _intent = new Intent(AndroidApp.Context, typeof(SplashActivity));
            _intent.PutExtra(TitleKey, title);
            _intent.PutExtra(MessageKey, message);
            _intent.PutExtra(ID, id); 

            PendingIntent pendingIntent = PendingIntent.GetActivity(
                AndroidApp.Context,
                id, _intent,
           PendingIntentFlags.OneShot);

            NotificationCompat.Builder builder = new NotificationCompat.Builder(AndroidApp.Context, channelId)
               .SetContentIntent(pendingIntent)
               .SetContentTitle(title)
               .SetContentText(message)
               .SetLargeIcon(BitmapFactory.DecodeResource(AndroidApp.Context.Resources, Resource.Drawable.SortexAppIcon))
               .SetSmallIcon(Resource.Drawable.SortexAppIcon)
               .SetDefaults((int)NotificationDefaults.Sound | (int)NotificationDefaults.Vibrate);

            manager = 
                (NotificationManager)context.GetSystemService(
                    AndroidApp.NotificationService);

            var notification = builder.Build();
            manager.Notify(messageId, notification);

Is it working on any other devices coming with android 8.0 ? — Anand, Feb 25 '20 at 03:46
Please check it on other device with android 8.0. So that we can isolate the problem — Anand, Feb 25 '20 at 03:48
I can’t do it since I don’t have one and I can’t prove the virtual machine for Android that VS provides — Andrés Quiroz Valdovinos, Feb 25 '20 at 04:21
Coz I can't just tell the solution for the problem that is causing for someone with some device only. — Satyam Kamboj, Feb 25 '20 at 04:50
You can find answers to your every question here. Have a look at it. https://droidmentor.com/schedule-notifications-using-alarmmanager/ — Satyam Kamboj, Feb 25 '20 at 05:57

score 0 · Answer 1 · answered Feb 25 '20 at 23:11

0

The solution is specified over this link

answered Feb 25 '20 at 23:11

Andrés Quiroz Valdovinos

139
2
13

score 0 · Answer 2 · answered Jun 03 '20 at 09:40

Methods,Firstly, Find "Settings" in the mobile phone, click to enter, and find "notification management". Second, Click to enter "notice management", which includes "notice management" and "suspended window management", showing"notice management". Forth, In "notice management", find the application which need to be opened. Click "enter" , the corresponding options will be displayed,selectting "prompt" or "allow".

Following is a detailed Chinese text and picture introduction, https://zhidao.baidu.com/question/1695787110911971788.html

Local notifications not working when app is breaked on Huawei device [Xamarin.Android]

2 Answers2