Shared Preferences get lost after shutting down device or killing the app

Question

there are lots of questions out there related to shared preferences and the alternatives. My problem: when I shut down the device or kill the app, the shared preferences get

Answer 1

I was having the exact same issue when using string set with the SharedPreferences. I discovered why this was happening and how to resolve it.

Very important to read the API documentation for SharedPreferences.getStringSet (String key, Set defValues)

Essentially DON'T modify or touch the returned Set! If you do you will get odd results with the SharedPreferences. :)

Enjoy!