title: Android - Disable Device Back button
body: <p>I am working on android application using PhoneGap. I need to handle Device back button functionality by using the below code:</p>
  
  <pre><code> import com.phonegap.DroidGap;
   public Class MyClass extends DroidGap {
   appView.setOnKeyListener(new OnKeyListener() { 
          public boolean onKey(View v, int keyCode, KeyEvent event) {
              if (keyCode == KeyEvent.KEYCODE_BACK &amp;&amp; event.getAction() == KeyEvent.ACTION_UP) {
                  finish();
                  return true;
              }
              return onKeyDown(keyCode, event); 
          } 
      });
    }
  </code></pre>
  
  <p>By using the above code, Application getting exited because i have used <code>finish();</code> But i want nothing should be happened on click of Device back button. How can i acheive that? Please help me.</p>