title: Google Analytics retrace Proguard
body: <p>How do I retrace my Proguard Android App with the Crash report in Google Analytics.  A few examples as follows:</p>
  
  <p>Note: when crash reports are done by the User with the Google App Console, I can use retrace OK with the <code>mapping.txt</code> file.</p>
  
  <p>Examples (from Google Analytics Behavior Crashes and Exceptions)</p>
  
  <ul>
  <li><p><code>RuntimeException (@a:a:-1) {main}</code></p></li>
  <li><p><code>IllegalStateException (@f:a:-1) {main}</code></p></li>
  <li><p><code>NullPointerException (@MainActivity:M:-1) {main}</code></p></li>
  <li><p><code>NullPointerException (@a:l:-1) {main}</code></p></li>
  <li><p><code>NullPointerException (@al:run:-1) {main}</code></p></li>
  </ul>