ListPreference's summary text is not updated automatically whenever there is change in selection

Question

Although it is being documented, by using \"%s\", I can display selected value as summary, it doesn\'t work as expected.

http://developer.android.com/refere

Answer 1

IMHO it is a bug. The onClickListener() defined in ListPreference.java#builder.setSingleChoiceItems() does not call notifyChanged()

I happen to be coding my own ListPreference based on that code, and ran across the same problem as the OP, I added notifyChanged():

            ...
            dialog.dismiss();
            notifyChanged(); // <<<<<<<<<<
        }
});

and now the preference summary is updated as soon as I choose it. It is not dependent on the Android version, ListPreference has been coded like this since ever.