How to capture the image of scanned barcode in vision barcode reader vision api

[urlAkash]

In camera source activity the take picture method is given but how to use it and how to take picture? Where to call the take picture method and how to store and display the captured picture in Resulting Activity?? Please help me soon

[alikarimi64]

I have same issue~ When i tap it doesn't capture

[gbdslmad]

The current Mobile Vision Barcode API does not appear to allow the developer to access the bitmap image that was used to successfully scan the barcode. If this is indeed possible, please could you advise how it can be achieved? Otherwise please consider this as a feature enhancement of the API.

This requirement is especially relevant to payments that involve the scan of a barcode on a bill or invoice. The ability to retain the image as part of the payment audit trail would provide evidence of the origin of the payment details, in the event of a dispute (i.e. the barcode could be re-scanned).

New EU Payments legislation (PSD2) demands segregation between the display and initiation of payments. This is challenging to achieve on a mobile device. The retention of the barcode image may help meet these segregation requirements.

[pchx-zz]

You can easily retain images in your application without any modification to the API itself.

For example, you can wrap BarcodeDetector in another Detector<Barcode> and supplement it with your own logic (e.g. if the results array is non-empty, start a background task to save the Frame data):

public class CapturingBarcodeDetector extends Detector<Barcode> {
  private BarcodeDetector mDetector;
  public CapturingBarcodeDetector(BarcodeDetector detector) {
    mDetector = detector;
  }

  [...]
  @Override
  public SparseArray<Barcode> detect(Frame frame) {
    SparseArray<Barcode> barcodes = mDetector.detect(frame);
    if (barcodes.size() > 0) {
      // Do whatever you like with frame.
    }
  }
}

Then attach your custom Detector to CameraSource and you're done.

[mrcodecloud]

When we are calling detect method from Main, where from we will get Frame to send to detect method ?