Save SWITCH button state, and recover state with SharedPrefs

Question

I have a Settings class so the user can decide to subscribe/unsubscribe to channels in Parse Push.

I think I got it all figure out except for the part to recover, a

Answer 1

1. findviewbyid will crash unless called after the view is created ie, in the oncreate method.
2. Consider using click listener on your switches.
3. I don't see the point of this line of code "SharedPreferences sharedPrefs = getSharedPreferences("SwitchButton", MODE_PRIVATE)"
4. Here is how you use shared preferences : https://stackoverflow.com/a/23024962/2590252
5. You better look into some samples to learn about best coding practices http://developer.android.com/samples/index.html