Question

I’m using ZXING IntentIntegrator in order to read a URL.
I managed to launch the barcode scanner using:

IntentIntegrator integrator = new IntentIntegrator(List8.this);
dialog = integrator.initiateScan();

The barcode scanner indicated that a URL has been found and redirects me back to my application where I retrieve the information using:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
     if (requestCode == 0) {
            if (resultCode == RESULT_OK) {
                String contents = intent.getStringExtra("SCAN_RESULT");
                String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
                Toast.makeText(getApplicationContext(), contents, Toast.LENGTH_LONG).show();
                // Handle successful scan
            } else if (resultCode == RESULT_CANCELED) {
                // Handle cancel
            }
        }


      }

The problem is that even thought a URL has been found the requestCode is -1 and the intent has no data.

Does anyone have any idea what’s the source of my problem?

P.S.

I tried implementing onActivityResultListener but got the following error:

The return type is incompatible with PreferenceManager.OnActivityResultListener.onActivityResult(int, int, 
     Intent)

Answer 1

Why do you expect the resultCode to be not -1? The resultCode is used to determine the intention, the “why” you have called the activity for result. Nothing more, nothing less… I would just remove the if (requestCode == 0) as it isn’t really important.