title: How can I use a system provided icon in Android (e.g. expander_ic_maximized)
body: <p>Can you please tell me how can I use android's icon expander_ic_maximized?
  I find that in frameworks/base/core/res/res/drawable-hdpi/expanderic_minimized.9.png</p>
  
  <p>Here is my layout xml file:</p>
  
  <pre><code>&lt;ImageView android:id="@+id/icon"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:src="@drawable/expander_ic_minimized"&gt;
  </code></pre>
  
  <p>But I get this error:</p>
  
  <pre><code>res/layout/test.xml:70: error: Error: Resource is not public. (at 'src' with value '@android:drawable/expander_ic_maximized').
  </code></pre>