private async void SalvarQr(object sender, EventArgs e)
{
if (await Permisos.EnsurePermission <Permissions.StorageWrite>("Permita el acceso") == PermissionStatus.Granted)
{
ScreenshotResult screenshot = await Screenshot.CaptureAsync();
using (Stream stream = await screenshot.OpenReadAsync())
{
string app_name = Application.Current.GetType().Namespace;
await DependencyService.Get <IGalleryService>()
.SaveImageToGallery(stream, $"{TxtTitle.Text}_{Guid.NewGuid():N}.png", app_name);
}
Acr.UserDialogs.UserDialogs.Instance.Alert("La cadena ha sido salvada en su galeria");
}
}