How to differentiate between an Update and a new installation
<p>I am programming an update for an App. A pop-up will appear at the beginning when the app is started for the first time. But it will just happen if the Update was installed as an Update. </p>

<p>Whoever install the app as a new installation should not see the pop-up.</p>

<p>The previous version of the App can't commit any SharedPreferences XML.</p>

<p>If you dont understand the situation, ask for further details, please.</p>
