title: change drawable of animated clip with code
body: <p>Alright, it is troubling me for quite some time now, so here it goes:</p>
  
  <p><strong>main.xml</strong></p>
  
  <pre><code>&lt;ImageView
      android:id="@+id/some_id
      android:src="@drawable/some_clip"
      android:layout_width="180dp"
      android:layout_height="240dp"/&gt;
  </code></pre>
  
  <p><strong>some_clip.xml</strong></p>
  
  <pre><code>&lt;clip xmlns:android="http://schemas.android.com/apk/res/android"
    android:clipOrientation="vertical"
    android:drawable="@drawable/my_drawable_that_i_want_to_change"
    android:gravity="bottom"/&gt;
  </code></pre>
  
  <p>I'm trying to access <code>some_clip.xml</code> and be able to change the drawable by code, is this possible. Any help or guidelines are appreciated!</p>