title: android how to change <item> width and height
body: <p>I'm making a <code>&lt;layer-list&gt;</code> for drawable.  </p>
  
  <p>I have my background image, and I want the second layer to be smaller,
  but it seems that doesn't matter what I'm writing inside my <code>android:layer_width</code> and <code>android:layer_height</code>.  </p>
  
  <p>The second layer size is still the same.</p>
  
  <p>Here is my xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;layer-list
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"&gt;
  
      &lt;item
          android:drawable="@drawable/picuser" 
          android:layout_width="50dp"
          android:layout_height="50dp" /&gt;
  
      &lt;item
          android:drawable="@drawable/ic_launcher" 
          android:layout_width="10dp"
          android:layout_height="10dp" /&gt;
  &lt;/layer-list&gt;
  </code></pre>