title: Put transperent fragment on layout in android
body: <p>I've a main.xml layout as follows:</p>
  
  <pre><code>&lt;RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent" &gt;
  
     &lt;FrameLayout&gt;/FrameLayout&gt;
  
     &lt;RelativeLayout&gt;&lt;/RelativeLayout&gt;
  
     &lt;fragment&gt;&lt;/fragment&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Now, I've to put transparent fragment/layout over main layout so I can put here some controllers.</p>