title: Android InstallLocation
body: <p>I would like to know which one is good when we put the app in google play</p>
  
  <ol>
  <li>Having android:installLocation="preferExternal" or</li>
  <li>Without mentioning anything on the location</li>
  </ol>
  
  <p>In the following statement, whats is the difference between the versionCode and versionName</p>
  
  <pre><code>android:versionCode="1"
  android:versionName="1.0" 
  </code></pre>
  
  <p>Thanks In Advance</p>