public void AutoFocus()
{
if (zxing != null)
{
zxing.AutoFocus();
}
}
public QrScan()
{
InitializeComponent();
zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
zxing.AutoFocus();
zxing.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
// Остановить анализ пока мы не вернемся на страницу
zxing.IsAnalyzing = false;
if (result.Text != null)
{
if (RoomData.isThatRoom(result.Text) != null)
{
// если помещение с имянем на QR есть в системе - открыть его страницу
await Shell.Current.GoToAsync($"roomdetails?name={result.Text}"); zxing.IsAnalyzing = true;
}
else
{
// иначе вывести содержимое кода
await DisplayAlert("Информация с кода: ", result.Text, "OK"); zxing.IsAnalyzing = true;
}
}
zxing.IsAnalyzing = true;
});
overlay = new ZXingDefaultOverlay
{
TopText = "Поднесите телефон к штрих-коду",
BottomText = "Сканирование произойдет автоматически",
ShowFlashButton = zxing.HasTorch,
};
overlay.FlashButtonClicked += (sender, e) =>
{
zxing.IsTorchOn = !zxing.IsTorchOn;
};
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(zxing);
grid.Children.Add(overlay);
Content = grid;
}
public ScanPage()
{
InitializeComponent();
var tapGestureRecognizer = new TapGestureRecognizer();
tapGestureRecognizer.Tapped += (s, e) =>
{
try
{
MasterDetailPage ParentPage = (MasterDetailPage)this.Parent;
ParentPage.IsPresented = (ParentPage.IsPresented == false) ? true : false;
}
catch (Exception ex)
{
var msg = ex.Message;
}
};
img.GestureRecognizers.Add(tapGestureRecognizer);
#region BarCode
QRCodeScanner = new ZXingScannerView()
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
};
QRCodeScanner.AutoFocus();
QRCodeScanner.OnScanResult += ScanResult;
Scanneroverlay = new ZXingDefaultOverlay
{
//TopText = "Scan BarCode.",
//BackgroundColor = Color.Transparent
};
Grid gridScannerBody = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
gridScannerBody.Children.Add(QRCodeScanner);
gridScannerBody.Children.Add(Scanneroverlay);
#endregion
ScannerStack.Children.Add(gridScannerBody);
}
public void ScanAsync()
{
scanner = new ZXingScannerView();
MobileBarcodeScanningOptions scanningOptions = new MobileBarcodeScanningOptions
{
UseNativeScanning = true,
UseFrontCameraIfAvailable = true,
PossibleFormats = new List <BarcodeFormat>(),
TryHarder = true,
AutoRotate = false,
};
scanner.Options = scanningOptions;
scanner.Options.PossibleFormats.Add(BarcodeFormat.QR_CODE);
scanner.Options.PossibleFormats.Add(BarcodeFormat.DATA_MATRIX);
scanner.Options.PossibleFormats.Add(BarcodeFormat.EAN_13);
scanner.OnScanResult += (result) => {
scanner.IsScanning = false;
if (scanner.IsScanning)
{
scanner.AutoFocus();
}
Device.BeginInvokeOnMainThread(async() => {
if (result != null)
{
bool scanOK = await DisplayAlert("Полученное изделие", result.Text, "OK", "Cancel");
if (scanOK)
{
await Navigation.PopAsync();
}
else
{
scanner.Result = null;
await Navigation.PopAsync();
};
}
});
};
}
public ScanPage(BottomTabbedPage tabbedContext)
{
InitializeComponent();
_tabbedContext = tabbedContext;
zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
zxing.IsAnalyzing = true;
zxing.IsScanning = true;
zxing.Options.PossibleFormats.Add(BarcodeFormat.QR_CODE);
zxing.Options.PossibleFormats.Add(BarcodeFormat.DATA_MATRIX);
zxing.Options.PossibleFormats.Add(BarcodeFormat.EAN_13);
zxing.AutoFocus();
zxing.OnScanResult += OnScan;
overlay = new ZXingDefaultOverlay
{
TopText = "Hold your phone up to the QR code",
BottomText = "Scanning will happen automatically",
ShowFlashButton = zxing.HasTorch,
};
overlay.FlashButtonClicked += (sender, e) => {
zxing.IsTorchOn = !zxing.IsTorchOn;
};
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(zxing);
grid.Children.Add(overlay);
Content = grid;
_message = DependencyService.Get <IMessage>();
}
private async void scanView_OnScanResult(ZXing.Result result)
{
scanner.Options = new MobileBarcodeScanningOptions()
{
UseFrontCameraIfAvailable = false, //update later to come from settings
PossibleFormats = new List <BarcodeFormat>(),
TryHarder = true,
AutoRotate = false,
TryInverted = true,
DelayBetweenContinuousScans = 2000
};
scanner.IsVisible = false;
scanner.Options.PossibleFormats.Add(BarcodeFormat.QR_CODE);
scanner.Options.PossibleFormats.Add(BarcodeFormat.DATA_MATRIX);
scanner.Options.PossibleFormats.Add(BarcodeFormat.EAN_13);
if (scanner.IsScanning)
{
scanner.AutoFocus();
}
try
{
if (string.IsNullOrEmpty(Preferences.Get(App.USERSIGNEDINKEY, string.Empty)))
{
await Navigation.PushModalAsync(new LoginPage());
return;
}
Device.BeginInvokeOnMainThread(async() =>
{
var res = await ApiServices.MarkAttendance(Preferences.Get("userId", string.Empty), result.Text);
if (res == null)
{
//await DisplayAlert("", "You have already marked the attendance", "Alright");
MessageDialog.Show("", "Your record is not fond in this church", "Cancel");
}
else
{
if (res.status)
{
await PopupNavigation.PushAsync(new MarkPopup());
await PopupNavigation.PopAsync();
// await DisplayAlert("", res.message, "Alright");
}
else
{
await DisplayAlert("", res.message, "Cancel");
}
}
await Navigation.PopAsync();
// await DisplayAlert("Scanned result", "The barcode's text is " + result.Text + ". The barcode's format is " + result.BarcodeFormat, "OK");
});
}
catch
{
await DisplayAlert("", "You have already marked the attendance", "Alright");
}
}
private void InitializeQr()
{
_scannerView = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
AutomationId = "zxingScannerView",
};
_scannerView.AutoFocus();
_scannerView.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
await ProcessQr(result.Text);
});
var overlay = new Grid {
AutomationId = "zxingDefaultOverlay"
};
overlay.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); //0
overlay.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); //1
overlay.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); //2
overlay.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); //3
overlay.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); //4
overlay.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); //0
overlay.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); //1
overlay.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); //2
overlay.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); //3
overlay.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); //4
Image imageButton = new Image
{
Source = "backscanner.png",
Aspect = Aspect.AspectFit,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Transparent,
};
var back = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Transparent,
};
back.Clicked += OnBackButtonClicked;
overlay.Children.Add(imageButton, 2, 4);
overlay.Children.Add(back, 2, 4);
Image scannerImage = new Image
{
Source = "scannerhud.png",
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Aspect = Aspect.Fill,
};
overlay.Children.Add(scannerImage, 0, 0);
Grid.SetColumnSpan(scannerImage, 5);
Grid.SetRowSpan(scannerImage, 4);
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(_scannerView);
grid.Children.Add(overlay);
Content = grid;
}
private async void LoadLectorQR()
{
if (isLoadLectorQR)
{
return;
}
isLoadLectorQR = true;
await MainViewModel.GetInstace().CollectViewModel.ShowDialog();
bool statePermission = await Permissions.GetPermissions(Permission.Camera);
if (statePermission)
{
try
{
await Task.Delay(1000);
scanner = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = new MobileBarcodeScanningOptions()
{
PossibleFormats = new List <ZXing.BarcodeFormat>
{
ZXing.BarcodeFormat.QR_CODE,
},
DelayBetweenContinuousScans = 2000
},
};
scanner.OnScanResult += (result) =>
{
scanner.IsAnalyzing = false;
if (scanner.IsScanning)
{
scanner.AutoFocus();
}
Device.BeginInvokeOnMainThread(async() =>
{
await MainViewModel.GetInstace().CollectViewModel.ProcessTransaction(result.Text);
scanner.IsAnalyzing = true;
});
};
MainPageContainer.Children.Add(scanner);
scanner.IsEnabled = true;
scanner.IsAnalyzing = true;
scanner.IsScanning = true;
}
catch (Exception ex)
{
ServiceBackgroundWorker.GetInstance().SendExceptionWorker(ex.ToString());
}
}
isFirstTimeOnLoad = false;
await MainViewModel.GetInstace().CollectViewModel.CloseDialog();
isLoadLectorQR = false;
}