Android Computer / Informatik

Android OnSharedPreferenceChangeListener not called

Hey everyone,

i now had a problem with an OnSharedPreferenceChangeListener multiple times. The problem was: it just never got called. I had a PreferenceActivity to manage the settings and i wanted to get notified in my main Activity when something changed. But my listener never was called.

Recently i found the answer to that problem on StackOverflow. The thing is that the SharedPreference keeps its listeners in a WeakHashMap. Which leads to the inability to use a nested inner class a the listener since it will be garbage collected.

So the solution to that problem is just storing the listener in a private variable like this:

private OnSharedPreferenceChangeListener prefListener;

And everything will work just fine 🙂

Gr33tz Goddchen