title: React Native - Observe AsyncStorage value changes?
body: <p>Is there a way to subscribe to an <code>AsyncStorage</code> value changes? I have a setting in one place which is saved in <code>AsyncStorage</code> in an app, which affects every other screen. I need to observe the value so that it is possible to update all the screens. I tried the <code>getValue</code> method but it seems to only get a value initially, and does not update on a change.</p>