protected override void OnCreate(Bundle bundle)
{
Window.SetFlags(WindowManagerFlags.KeepScreenOn, WindowManagerFlags.KeepScreenOn);
base.OnCreate(bundle);
ActionBar.SetHomeButtonEnabled(true);
ActionBar.SetDisplayHomeAsUpEnabled(true);
SetContentView(Resource.Layout.BarcodeActivity);
SetTitle(Resource.String.scan_barcode);
_scanView = FindViewById <BarcodeScanView>(Resource.Id.barcode_scan_view);
_resultText = FindViewById <TextView>(Resource.Id.text_result);
_scanView.SetConfigFromAsset("BarcodeConfig.json");
_scanView.InitAnyline(MainActivity.LicenseKey, this);
// limit the barcode scanner to QR codes or CODE_128 codes
//scanView.SetBarcodeFormats(BarcodeScanView.BarcodeFormat.QR_CODE, BarcodeScanView.BarcodeFormat.CODE_128);
_scanView.SetBeepOnResult(true);
_scanView.SetCancelOnResult(false);
_scanView.CameraOpened += Camera_Opened;
_scanView.CameraError += Camera_Error;
}
public void FlashToggleButton_Clicked(object sender, EventArgs e)
{
if (FlashToggleButton.IsToggled)
{
BarcodeScanView.ToggleTorch();
}
else
{
BarcodeScanView.IsTorchOn = false;
}
}
protected override async void OnAppearing()
{
base.OnAppearing();
if (_ScanView == null)
{
if (Device.RuntimePlatform == Device.Android || Device.RuntimePlatform == Device.iOS)
{
var scanView = new BarcodeScanView(XamBarcodeFormat.QrCode);
scanView.OnBarcodeScanResult += OnScanResult;
_ScanView = scanView;
}
if (_ScanView == null)
{
if (Device.RuntimePlatform != Device.Android && Device.RuntimePlatform != Device.iOS)
{
this.scanMessage.Text = "Barcode scan not supported in this platform!";
}
else
{
var cameraStatus = await Permissions.CheckStatusAsync <Permissions.Camera>();
if (cameraStatus != PermissionStatus.Granted)
{
this.scanMessage.Text = "Check the Camera permissions to scan barcodes";
}
else
{
this.scanMessage.Text = "Generic error";
}
}
this.scanMessage.IsVisible = true;
}
else
{
this.scanMessage.IsVisible = false;
_ScanView.VerticalOptions = LayoutOptions.FillAndExpand;
_ScanView.HorizontalOptions = LayoutOptions.FillAndExpand;
this.scanView.Children.Add(_ScanView, 0, 0);
}
}
else
{
if (Device.RuntimePlatform == Device.Android || Device.RuntimePlatform == Device.iOS)
{
((BarcodeScanView)_ScanView).OnBarcodeScanResult -= OnScanResult;
((BarcodeScanView)_ScanView).OnBarcodeScanResult += OnScanResult;
((BarcodeScanView)_ScanView).StartCamera?.Invoke(true);
}
}
}