//public async Task CheckCameraPermission()
//{
// var status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
// if (status != PermissionStatus.Granted)
// {
// await CrossPermissions.Current.ShouldShowRequestPermissionRationaleAsync(Permission.Camera);
// var results = await CrossPermissions.Current.RequestPermissionsAsync(Permission.Camera);
// }
//}
//public async Task CheckPermissions()
//{
// //await CheckReadDevicePermission();
// await CheckCameraPermission();
// //await CheckStoragePermission();
//}
protected override void OnAppearing()
{
base.OnAppearing();
//CheckPermissions().GetAwaiter();
zxing.IsScanning = true;
zxing.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
// Para a analise
zxing.IsAnalyzing = false;
zxing.IsScanning = true;
BarcodeReaded?.Invoke(this, result.Text);
await DisplayAlert("Scanned Barcode", result.Text, "OK");
});
}
public ZXingView()
{
InitializeComponent();
//Opções de Leitura
var options = new ZXing.Mobile.MobileBarcodeScanningOptions
{
AutoRotate = false,
UseFrontCameraIfAvailable = false,
TryHarder = true,
PossibleFormats = new List <ZXing.BarcodeFormat>
{
ZXing.BarcodeFormat.QR_CODE//ZXing.BarcodeFormat.EAN_8, ZXing.BarcodeFormat.EAN_13
}
};
zxing = new ZXing.Net.Mobile.Forms.ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = options
};
zxing.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
// Para a analise
zxing.IsAnalyzing = false;
BarcodeReaded?.Invoke(this, result.Text);
await Navigation.PopModalAsync();
});
overlay = new ZXingDefaultOverlay
{
TopText = "Escolhe um QRCode para leitura",
BottomText = "O Código sera lido automaticamente",
ShowFlashButton = zxing.HasTorch, //Lanterna
};
overlay.FlashButtonClicked += (sender, e) =>
{
zxing.IsTorchOn = !zxing.IsTorchOn;
};
var abort = new Button
{
Text = "Cancelar",
VerticalOptions = LayoutOptions.End,
TextColor = Color.FromHex("#FFF"),
BackgroundColor = Color.FromHex("#4F51FF")
};
switch (Device.RuntimePlatform)
{
case Device.iOS:
abort.HeightRequest = 40;
break;
case Device.Android:
abort.HeightRequest = 50;
break;
}
abort.Clicked += (object s, EventArgs e) =>
{
zxing.IsScanning = false;
Device.BeginInvokeOnMainThread(async() =>
{
await Navigation.PopModalAsync();
});
};
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(zxing);
grid.Children.Add(overlay);
grid.Children.Add(abort);
Content = grid;
}
public BarcodeScanner()
{
InitializeComponent();
GlobalVariables._codigoBarras = null;
var options = new MobileBarcodeScanningOptions
{
AutoRotate = false,
UseFrontCameraIfAvailable = false,
TryHarder = true,
//PossibleFormats = new List<ZXing.BarcodeFormat>
//{
// ZXing.BarcodeFormat.EAN_8, ZXing.BarcodeFormat.EAN_13,
// ZXing.BarcodeFormat.CODE_39,ZXing.BarcodeFormat.All_1D
//}
};
zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = options
};
zxing.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
// Stop analysis until we navigate away so we don't keep reading barcodes
zxing.IsAnalyzing = false;
BarcodeReaded?.Invoke(this, result.Text);
// Navigate away
await Navigation.PopAsync();
// Código de barras leído. Envía Menssage a MainPage
MessagingCenter.Send <Views.BarcodeScanner, string>(this, "BarcodeRead", result.Text);
//if (result.Text != null)
//{
// GlobalVariables._codigoBarras = result.Text;
// // await Navigation.PushAsync(new Views.ArticusPage(result.Text, null));
//}
});
overlay = new ZXingDefaultOverlay
{
TopText = "Sostenga su teléfono sobre el código de barras",
BottomText = "El código se escaneará automaticamente",
ShowFlashButton = true,
//ShowFlashButton = zxing.HasTorch,
};
overlay.FlashButtonClicked += (sender, e) =>
{
zxing.IsTorchOn = !zxing.IsTorchOn;
};
var abort = new Button
{
Text = "Cancelar",
VerticalOptions = LayoutOptions.End,
TextColor = Color.FromHex("#FFF"),
BackgroundColor = Color.FromHex("#4F51FF")
};
switch (Device.RuntimePlatform)
{
case Device.iOS:
abort.HeightRequest = 40;
break;
case Device.Android:
abort.HeightRequest = 50;
break;
}
abort.Clicked += (object s, EventArgs e) =>
{
zxing.IsScanning = false;
Device.BeginInvokeOnMainThread(async() =>
{
await Navigation.PopAsync();
});
};
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(zxing);
grid.Children.Add(overlay);
grid.Children.Add(abort);
// The root page of your application
Content = grid;
}
