/// <summary>
/// <see cref="LabelReaderBase.GetFullTextFromImage(object)"/>
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public override Task <string> GetFullTextFromImageAsync(object image)
{
byte[] imageBytes = (byte[])image;
TaskCompletionSource <string> taskCompletionSource = new TaskCompletionSource <string>();
StringBuilder stringBuilder = new StringBuilder();
using (Bitmap imageBitmap = BitmapFactory.DecodeByteArray(imageBytes, 0, imageBytes.Length))
using (global::Android.Gms.Vision.Frame frame = new global::Android.Gms.Vision.Frame.Builder().SetBitmap(imageBitmap).Build()) {
SparseArray textArray = TextRecognizer.Detect(frame);
List <string> valuesInOrder = OrderTextBlocks(textArray);
foreach (string value in valuesInOrder)
{
stringBuilder.Append(value);
}
taskCompletionSource.SetResult(stringBuilder.ToString());
}
return(taskCompletionSource.Task);
}
/// <summary>
/// <see cref=ILabelReader.GetRawBarcodeTextFromImageAsync(object)"/>
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public override Task <string> GetRawBarcodeTextFromImageAsync(object image)
{
byte[] imageBytes = (byte[])image;
TaskCompletionSource <string> taskCompletionSource = new TaskCompletionSource <string>();
using (Bitmap imageBitmap = BitmapFactory.DecodeByteArray(imageBytes, 0, imageBytes.Length))
using (global::Android.Gms.Vision.Frame frame = new global::Android.Gms.Vision.Frame.Builder().SetBitmap(imageBitmap).Build()) {
SparseArray barcodeArray = BarcodeDetector.Detect(frame);
if (barcodeArray.Size() <= 0)
{
taskCompletionSource.SetResult(String.Empty);
}
else
{
Barcode qr = (Barcode)(barcodeArray.ValueAt(0));
taskCompletionSource.SetResult(qr.RawValue);
}
}
return(taskCompletionSource.Task);
}
