protected async override void OnCreate(Bundle bundle) { base.OnCreate(bundle); StorageService storage = new StorageService(); BluetoothService bluetooth = new BluetoothService(); App.BluetoothStartedEnabled = bluetooth.IsEnabled; Location.RequestEnableGPS(); var a = FirebaseApp.InitializeApp(this); player = MediaPlayer.Create(this, Resource.Raw.Stop); Thread TurnOnAndConnect = new Thread(() => { try { if (!App.BluetoothStartedEnabled) { bluetooth.Enable(); Thread.Sleep(3000); } if (!string.IsNullOrWhiteSpace(storage.GUID)) { var adapter = CrossBluetoothLE.Current.Adapter; var aa = adapter.ConnectToKnownDeviceAsync(new Guid(storage.GUID)).Result; } if (!string.IsNullOrWhiteSpace(storage.Address)) { bluetooth.ConnectToSensor(storage.Address, true); } } catch (System.Exception ex) { string title = this.GetType().Name + " - " + System.Reflection.MethodBase.GetCurrentMethod().Name; if (BalizaFacil.App.Instance != null) { BalizaFacil.App.Instance.UnhandledException(title, ex); } } }); TurnOnAndConnect.Priority = System.Threading.ThreadPriority.Highest; TurnOnAndConnect.Name = nameof(TurnOnAndConnect); TurnOnAndConnect.Start(); TabLayoutResource = Resource.Layout.Tabbar; ToolbarResource = Resource.Layout.Toolbar; //RequestPermissions(new string[] { Manifest.Permission.AccessCoarseLocation, Manifest.Permission.AccessFineLocation }, 0); Xamarin.Essentials.Platform.Init(this, bundle); global::Xamarin.Forms.Forms.Init(this, bundle); Instance = this; Window.AddFlags(WindowManagerFlags.KeepScreenOn); ZXing.Net.Mobile.Forms.Android.Platform.Init(); ZXing.Mobile.MobileBarcodeScanner.Initialize(Application); DisplayMetrics displayMetrics = new DisplayMetrics(); WindowManager.DefaultDisplay.GetRealMetrics(displayMetrics); App.ScreenHeight = (int)(Resources.DisplayMetrics.HeightPixels / Resources.DisplayMetrics.Density); App.ScreenWidth = (int)(Resources.DisplayMetrics.WidthPixels / Resources.DisplayMetrics.Density); App.HeightPixels = displayMetrics.HeightPixels; App.WidthPixels = displayMetrics.WidthPixels; App.IsAndroidSDKBelowMarshmallow = Build.VERSION.SdkInt < BuildVersionCodes.M; AppDomain.CurrentDomain.UnhandledException += OnCurrentDomainUnhandledException; TaskScheduler.UnobservedTaskException += OnTaskSchedulerOnUnobservedTaskException; AndroidEnvironment.UnhandledExceptionRaiser += OnAndroidEnvironmentOnUnhandledException; LoadApplication(new App()); }