Fragment doesn't refresh

Question

I have a Fragment that shows some data saved in android Preference . when these data changes due to various operations of the app, I want to update the fragment with the new data.

I have tried to use

myFragmentTransaction.notifyAll();

But unfortunately doesn't work and the fragment is updated only when I reopen my whole Activity

Houw could I refresh the Fragment on data changes?

Answer 1

notifyAll pertains to threading. Completely unrelated to what you are doing. Instead of trying to tell each fragment to redraw themselves have you tried OnSharedPreferenceChangeListener . Each fragment should listen to changes in the information they care for.