registerOnSharedPreferenceChangeListener not working for changes made in different process [duplicate]

Question

I have registered registerOnSharedPreferenceChangeListener with my SharedPreferences in my Activity. When I change the data saved with SharedPreferences inside service running in different process, onSharedPreferenceChanged is not called!

What should I do to make android call onSharedPreferenceChanged?

Answer 1

Most likely, it is being garbage collected by gc. I have faced this problem before. Make a global variable which keeps a hard reference to the listener.

  OnSharedPreferenceChangeListener listener = new SharedPreferences.OnSharedPreferenceChangeListener() {
      public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
        // Implementation
      }
    };

The answer at SharedPreferences.onSharedPreferenceChangeListener not being called consistently explains it best