public ZXingScannerPage(MobileBarcodeScanningOptions options = null, View customOverlay = null)
: base()
{
zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = options,
AutomationId = "zxingScannerView"
};
zxing.SetBinding(ZXingScannerView.IsTorchOnProperty, new Binding(nameof(IsTorchOn)));
zxing.SetBinding(ZXingScannerView.IsAnalyzingProperty, new Binding(nameof(IsAnalyzing)));
zxing.SetBinding(ZXingScannerView.IsScanningProperty, new Binding(nameof(IsScanning)));
zxing.SetBinding(ZXingScannerView.HasTorchProperty, new Binding(nameof(HasTorch)));
zxing.SetBinding(ZXingScannerView.ResultProperty, new Binding(nameof(Result)));
zxing.OnScanResult += (result)
=> OnScanResult?.Invoke(result);
if (customOverlay == null)
{
defaultOverlay = new ZXingDefaultOverlay()
{
AutomationId = "zxingDefaultOverlay"
};
defaultOverlay.SetBinding(ZXingDefaultOverlay.TopTextProperty, new Binding(nameof(DefaultOverlayTopText)));
defaultOverlay.SetBinding(ZXingDefaultOverlay.BottomTextProperty, new Binding(nameof(DefaultOverlayBottomText)));
defaultOverlay.SetBinding(ZXingDefaultOverlay.ShowFlashButtonProperty, new Binding(nameof(DefaultOverlayShowFlashButton)));
DefaultOverlayTopText = "Hold your phone up to the barcode";
DefaultOverlayBottomText = "Scanning will happen automatically";
DefaultOverlayShowFlashButton = HasTorch;
defaultOverlay.FlashButtonClicked += (sender, e) =>
zxing.IsTorchOn = !zxing.IsTorchOn;
Overlay = defaultOverlay;
}
else
{
Overlay = customOverlay;
}
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(zxing);
grid.Children.Add(Overlay);
// The root page of your application
Content = grid;
}
public ZXingCustomScanPage(ZXingScanOverlay overlay = null) : base()
{
_overlay = overlay ?? new ZXingScanOverlay();
Title = "扫一扫";
_zxing = new ZXingScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
AutomationId = "zxingScannerView",
};
// 返回结果
_zxing.OnScanResult += (result) =>
Device.BeginInvokeOnMainThread(async() =>
{
_zxing.IsAnalyzing = false;
await Navigation.PopModalAsync(); //安卓可能报错
OnScanResult?.Invoke(result);
});
// 闪光灯
_overlay.Options.FlashTappedAction = () =>
{
_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 void RaiseScanResult(Result result)
{
Result = result;
OnScanResult?.Invoke(Result);
ScanResultCommand?.Execute(Result);
}
public void OnTagRead(NfcManager nfcManager, string content)
{
OnScanResult.Invoke(content);
}
private void OnTagReadDataResult(string data)
{
OnScanResult.Invoke(data);
}