Question

I’m getting a null pointer on a shared pref. But shared prefs always require a default value. So wouldn’t that make it impossible.

Adding this code snippet (roughly) gives me the problem (according to logcat):

myPrefs = getSharedPreferences("myPrefs", 0);
        String lvl_result= myPrefs
                .getString(lvl, null);
        // Example "A -> a" or null
        if (lvl_result.equals(null)) {
            gen_lvl();
            lvl_result = myPrefs.getString(lvl, null);
        }

Logcat (not sure if this is what you want to see):

12-04 00:54:42.932: E/AndroidRuntime(763): Caused by: java.lang.NullPointerException

Answer 1

Replace following line in your code:

if (lvl_result.equals(null)) {

with

if (lvl_result == null) {

if the lvl_result is null then calling equals method on this object would raise the null pointer exception..