title: Problems with call forwarding and MMI return status to a variable (*#21#)
body: <p>I'm having trouble catching the "result" of *#21# code in my cellphone.  I want to see whether I have call fowarding active or not and store this in a Boolean variable.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>public void verificarStatus()
  {
       tvStatus = (TextView) findViewById(R.id.tvStatus);
       Intent intentCallForward = new Intent(Intent.ACTION_CALL);
       Uri uri = Uri.fromParts("tel", "*#21#", "#");
       intentCallForward.setData(uri);
       startActivity(intentCallForward);
       tvStatus.setText();
  }
  </code></pre>