Android :: Disable HOME Key And Right Soft Key

I m making a test application and want to able all keys excluding the back button...... Using below code i am not able to disable HOME key and right soft key..... Please suggest what to do.

@Override public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_BACK){ return super.onKeyDown(keyCode, event); } else { return true; }

}