如何获取对最后一个backstack弹出片段的引用？

Question

I add, show and hide fragments. Each time I add/show a fragment, I hide the previous fragment and add the transaction to the backstack.

When a user presses the back button, a fragment is popped and I would like to have a reference to it .

Why do I need a reference? So I could hide it when the user continues to the next fragment.

So, how do I get a reference to a popped fragment?

EDIT-25-04-2013:

Here's code to explain how to add a new fragment, while hiding the previous one. The question is how to get a reference to the last fragment after it is popped from the backstack (using the back button)?

FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
fragmentTransaction.hide(lastFragment);
fragmentTransaction.add(newFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
lastFragment = newFragment;

Answer 1

I use generated tags for each fragment, save the tags in a stack and persist the stack. This way I get hold of every fragment out there - last one in specific. See the code here .