动作栏：添加新菜单资源

Question

I have an ActionBar in my app with tabs. Each tab has its own Fragment .

In a Fragment class, onCreateOptionsMenu gets called, but just once. Based on user input, I'd like to inflate a new menu resource, after the first time the onCreateOptionsMenu is called.

How would I do this?

Answer 1

You should be able to dynamically change the ActionBar menu. Using if statements etc in the onCreateOptionsMenu .

When you need to re-run the logic call

invalidateOptionsMenu();

Which will recreate the menu items.