Having problems closing dialog box
<p>I am a new to android development and need help. Please explain in detail and not just supply me with an answer that would be ideal. </p>

<p>My issue: I created a dialog box for my app and well it displays great, it dims the app and just opens the box but I am having issues closing it. If someone wanted to exit out of it, they would have to press the back arrow button. Yeah, this is not hard-work, but I would like my app to be nicely done and clean-cut. So I was wondering if there was a way to put an "X" at the top right corner to exit the dialog box?</p>

<p>If someone could add on to my code that would be perfect.Like I said, I am new to this and someone telling me just add this. I would not know where to add that code to.</p>

<p>My Code:</p>

<pre><code> @Override
   protected void onPause() {
      // TODO Auto-generated method stub
      super.onPause();
   }

   public boolean onCreateOptionsMenu(Menu menu){
   super.onCreateOptionsMenu(menu);
   MenuInflater library = getMenuInflater();
   library.inflate(R.menu.main_menu, menu);
   return true;
}

   public boolean onOptionsItemSelected(MenuItem item){
      switch (item.getItemId()){
      case R.id.menuAus:
         startActivity(new Intent("com.tester.web.AUS"));
         return true;
      }
      return false;
   }
</code></pre>
