public ZXingScanOverlay(ZXingScanOverlayOptions options = null)
{
Options = options ?? new ZXingScanOverlayOptions();
RowSpacing = 0;
ColumnSpacing = 0;
VerticalOptions = FillAndExpand;
HorizontalOptions = FillAndExpand;
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = Options.ScanHeight
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = Options.ScanWidth
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
AddScreenArea();
AddCenterArea();
SetRow(Options.TopLabel, 0);
SetColumnSpan(Options.TopLabel, 3);
Children.Add(Options.TopLabel);
SetRow(Options.BottomLabel, 2);
SetColumnSpan(Options.BottomLabel, 3);
Children.Add(Options.BottomLabel);
var tapGestureRecognizer = new TapGestureRecognizer();
tapGestureRecognizer.Tapped += (sender, e) =>
{
Options.FlashTappedAction?.Invoke();
};
Options.FlashLabel.GestureRecognizers.Add(tapGestureRecognizer);
if (Options.ShowFlash)
{
Children.Add(Options.FlashLabel, 2, 2);
}
}
private async void CustomScanBarCodeBtn_OnClicked(object sender, EventArgs e)
{
if (await CheckPerssion())
{
var options = new ZXingScanOverlayOptions()
{
ScanColor = Color.Green,
ShowFlash = true
};
var overlay = new ZXingScanOverlay(options);
var csPage = new ZXingCustomScanPage(overlay);
csPage.OnScanResult = (result) =>
{
if (null != result)
{
CustomScanResult.Text = result.Text;
}
};
await Navigation.PushModalAsync(csPage);
}
}