title: highlight text inside a textview
body: <p>I have a TextView with a random background color (could be any color really). I also have a text on this Textview that need to be readable. 
  I assume the best solution is to highlight the said text in white and set the text color to black.</p>
  
  <p>My question is: Is it possible to highlight the text inside a texview from the XML?</p>
  
  <p>I have the following in my layout:</p>
  
  <pre><code>  &lt;TextView
          android:layout_width="100dp"
          android:layout_height="100dp"
          android:id="@+id/colorButton4"
          android:layout_gravity="right|bottom"
          android:background="@drawable/layout_border"
          android:layout_marginRight="30dp"
          android:layout_marginBottom ="30dp"
          android:clickable="true"
          android:onClick="onClick"
          android:gravity="center"
          android:textColorHighlight="@color/bgWhite"
          android:textColor="@color/Black"
          android:text="5431354" /&gt;
  </code></pre>
  
  <p>But it deosn't highlight the text.</p>