get zxing data into swipe view fragment

Question

I am using zxing in a fragment of viewpager tab. I can call zxing with Intent and read the QR code but I can't get result to a edittext.

This is where i create tab in FragmentPagerAdapter:

@Override
    public Fragment getItem(int i) {
        switch (i) {
        case 0:
            return new Tab1();
        case 1:
            return new Tab2();
        default:
            return new EmptyTab();
        }
    }

And my Tab1 class:

public class Tab1 extends Fragment {
@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.tab_1, container, false);
        IDEditText = (EditText) rootView.findViewById(R.id.fttx_id_editText);

        Button scanBarcode = (Button) rootView.findViewById(R.id.scan_barcode);

        scanBarcode.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                IntentIntegrator scanIntegrator = new IntentIntegrator(getActivity);
                scanIntegrator.initiateScan();
            }
        });

        return rootView;
    }



    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        // retrieve scan result
        IntentResult scanningResult = IntentIntegrator.parseActivityResult(
                requestCode, resultCode, intent);
        if (scanningResult != null) {
            // we have a result
            String scanContent = scanningResult.getContents();
            IDEditText .setText("CONTENT: " + scanContent);
        } else {
            Toast.makeText(getActivity(),
                    "No scan data received!", Toast.LENGTH_SHORT).show();
        }
    }

zxing starts; then reads; then ends; but with no scan data: I think 'onActivityResult' never starts :(

How can i use zxing in this fragment?

Answer 1

IntentIntegrator has another constructor, taking the Fragment. Instead of:

scanBarcode.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        IntentIntegrator scanIntegrator = new IntentIntegrator(getActivity());
        scanIntegrator.initiateScan();
    }
});

you can use:

scanBarcode.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        IntentIntegrator scanIntegrator = new IntentIntegrator(Tab1.this);
        scanIntegrator.initiateScan();
    }
});

and it should invoke onActivityResult for the Fragment directly.

An example showing working usage of both starting the intent from an Activity and from a Fragment, with the barcode scanner installed, is demonstrated in this GitHub repo.

---

If you are using the v4 support library Fragments, the IntentIntegratorSupportV4 class provides compatibility:

IntentIntegrator scanIntegrator = new IntentIntegratorSupportV4(Tab1.this);