Droid Dev Stream
P144: Fragments p4: Communicating between FragmentActivity and Fragment

In your FragmentActivity, you can call getSupportFragmentManager().findFragmentByTag(“tag”), or findFragmentById(R.id.frag), to access the child Fragment. From there you can call its methods.

Similarly, in the Fragment, you can call getActivity() to get access to the parent FragmentActivity().

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