Question

Can anyone tell me how I can correctly pass my application context to my button setOnClickListener?

I’m attempting to scan barcodes when I click a “scan button” defined in my layout code using Zxing.

The following is my code:

    public class ScaningActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
            }
        });//close upload clicklistener

    final Button scan = (Button)findViewById(R.id.scanButton);
        scan.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                Context c = getApplicationContext();

                // TODO Auto-generated method stub
                IntentIntegrator integrator = new IntentIntegrator(c);
                integrator.initiateScan();
            }
        });

    }//close onCreate
        public void onActivityResult(int requestCode, int resultCode, Intent intent) {
          IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
          if (scanResult != null) {
            // handle scan result
            Log.e("DATA", "TESTING SCAN RESULT : " + scanResult.toString());
          }else{
              Log.d("DATA", "NO SCAN RESULTS : ");// + scanResult.getFormatName());//scanResult.getContents());
          }

        }
}//close ScaningActivity

The problem is IntentIntegrator does not recognise the context argument I am suppling as in the following:

Context c = getApplicationContext();
IntentIntegrator integrator = new IntentIntegrator(c);

Answer 1

Try to replace

Context c = getApplicationContext();

by

Context c = ScaningActivity.this;