how to change the text of textview in custom actionbar using child fragment

Question

I have a child fragment inside the parent fragment. I want to change the text of the TextView in custom ActionBar from child fragment here is my code and it gives me an error of null object reference I have created a custom layout for action bar and inflate this layout with action bar.

Now I have four fragments in main activity. In first fragment there are four buttons. when I tap on the first button it opens another fragment. I want to change the text of the TextView from child fragment in custom ActionBar which is inflated with the main activity. the fragment name is Qoutes fragment and I want to change the text of TextView to Quotes.

How I can do this:

Answer 1

Solution:

Try like this:

 ((your_activity) getActivity()).setHomeAsUpEnabled(false);

You need to cast getActivity() with the name of your Activity.

Ex: ((MainActivity) getActivity()).setDisplayHomeAsUpEnabled(false);

Same way you can change the text as well:

((MainActivity) getActivity()).setActionBarTitle("Your title");

Any issues, Please comment.