Download content when app is updated via google play?

Question

So this is the first time I am going to send an update for my app and I don\'t know about what actully happens when an app is updated via google-play,

Here are some ques

Answer 1

You need to implement a Broadcast Receiver that gets notified when the Paackage is beeing replaced:
In your Manifest include:

The class MyReceiver needs to extend android.content.BroadcastReceiver

To Answer your second question: The SharedPreferences aren't affected by an update through Google Play, as aren't the files in your App's data-Folder.