title: How to roll back a transaction on Android?
body: <p>Here is the standard idiom for transactions: </p>
  
  <pre><code>   db.beginTransaction();
     try {
       ...
       db.setTransactionSuccessful();
     } finally {
       db.endTransaction();
     }
  </code></pre>
  
  <p>I want to add a catch block, and I want to issue a rollback. Is it possible, and at all do I need it?</p>