title: How to read result of bitwise operator OR (|)?
body: <p>I would like the confirmation on bitwise operators inside Android XML files. For example this line </p>
  
  <pre><code>android:layout_gravity="center_horizontal|bottom"
  </code></pre>
  
  <p>How should I read it? Are the rules inherited from Java or Android does its own interpretation of bitwise operators?</p>
  
  <p>Are all bitwise operators supported? If yes, could you show me the example of other operators (link is fine as well)?</p>
  
  <p>Thanks</p>