save variables after quitting application?

Question

I want some variables to be saved, when I shut down my app and to load them after opening the app (for statistics in a game)

How can I do this?

EDIT: Here my

Answer 1

sample code: save:

SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = settings.edit();
editor.putString("statepara1", ts);
editor.commit();

get:

SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);    
String ret = settings.getString("statepara1", "0");