title: Persist files between updates in an Android app
body: <p>I noticed that my app loses the files stored in the device storage after an update from the Market. I use <code>openFileOutput()</code> to fetch a directory to store my important files, as is specified <a href="http://developer.android.com/guide/topics/data/data-storage.html#filesInternal" rel="nofollow">here</a>. I'd expect that these files would be kept between updates, but it does not seem to be the case, at least with Froyo. If this behavior is correct, how should I store my files in a manner that they won't be deleted after an update? </p>