When will the method “onPrepareOptionsMenu” be called?

Question

I create a menu.xml , only one action item with the "always" inside it. now I want to use the this method to change the menu's visible ,remove old action item , add new action item , change the old action item's icon ... so how to implement this ? I don't want the onCreateOptionMenu to be called more than once as the activity has presented by Android system.

Answer 1

onPrepareOptionsMenu() will be called automatically after onCreateOptionsMenu().

And if you called invalidateOptionsMenu() on any action-item click event, then , it will be called again.