title: How to use the ZXING scan result
body: <p>I'm breaking my head over this one. I'm kind of new in android development.</p>
  
  <p>I want to use the scan result from ZXING. I integrated ZXING into my android app, the scan works ok. Now I want to use the scan result to update a TextView in the main activity.</p>
  
  <p>How can I do that?</p>
  
  <p>My code is doing the following for now:</p>
  
  <ol>
  <li>Open Main activity with a button.</li>
  <li>On clicking the button it activates the scanner.</li>
  <li>After scanning it goes back to the main activity.</li>
  <li>The TextView is empty and for some reason it goes back to the original content after moving from landscape to portrait.</li>
  </ol>
  
  <p>After (2) I want to use the scanned result to update the TextView in the main activity (tv in my code).</p>
  
  <p>Please help guys,
  Thanks.</p>
  
  <p>My code:</p>
  
  <pre><code>public class Main extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  
      Button pressToScan = (Button) findViewById(R.id.button1);
  
      pressToScan.setOnClickListener(new OnClickListener() {
  
          @Override
          public void onClick(View v) {
              // TODO Auto-generated method stub
              Intent data = new Intent("com.google.zxing.client.android.SCAN");
              data.putExtra("SCAN_MODE", "QR_CODE_MODE");
              startActivityForResult(data, 0);
  
  TextView tv = (TextView) findViewById(R.id.scanResult);
                  tv.setText(data.getStringExtra("SCAN_RESULT"));
          }
      });
  }
  
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
      String contents = null;
      super.onActivityResult(requestCode, resultCode, data);
      if (requestCode == 0) {
            if (resultCode == RESULT_OK) {
               contents = data.getStringExtra("SCAN_RESULT");
               String format = data.getStringExtra("SCAN_RESULT_FORMAT");
  
               // Handle successful scan
            } else if (resultCode == RESULT_CANCELED) {
               // Handle cancel
            }
      }
  
  }
  </code></pre>
  
  <p>}</p>