I am not sure about other good options but you can definitely do the following.
say you have an activity named A and it has contained to fragment b and c. you need to send data from b to c.
as both b and c are child of activity A then can access the method of A. And A can also access the child fragments b and c. So to pass info from b to c create a method in A which will pass info to c and call it from b.
To be more specific you can see the doc.
So the fragment can access the Activity instance with getActivity() and easily call method
getActivity().passInfoToC(data);
Likewise, your activity can call methods in the fragment by acquiring a reference to the Fragment from FragmentManager, using findFragmentById() or findFragmentByTag(). For example:
ExampleFragment fragment = (ExampleFragment)getFragmentManager().findFragmentById(R.id.example_fragment);
fragment.setData(data);
Then access a method to pass data.
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stackoverflow.comm
