android SharedPreferences null keys, values and sets<?> - corner cases

Question

Been extensively testing the SharedPreferences framework. While most works as one would expect I run across some cases where I wonder what\'s the reasoning behind t

Answer 1

1. It's in the code

2. It's me not understanding generics:

   You can easily put a String into a HashSet<Integer> by using the raw type HashSet

3. Posted an issue here: http://code.google.com/p/android/issues/detail?id=63463 (after starting a discussion in google groups with the usual noop results). Actually as of 2014.01.07 the issue is marked Future Release :)

Test project.