private async Task ReadFromGallery(FileResult qr)
{
SharedZXingNet::ZXing.Result result = null;
var qr_file = await qr.LoadPhotoAsync();
using (MemoryStream memory = new MemoryStream())
{
using (FileStream file = new FileStream(qr_file.FullName, FileMode.Open, FileAccess.Read))
{
await file.CopyToAsync(memory);
}
BarcodeDecoding reader = new BarcodeDecoding();
result = reader.Decode(memory, SharedZXingNet::ZXing.BarcodeFormat.QR_CODE
, new[]
{
new KeyValuePair <SharedZXingNet::ZXing.DecodeHintType, object>(SharedZXingNet::ZXing.DecodeHintType.TRY_HARDER, null)
});
}
await Deserialize(result?.Text);
}