How to change the text on the action bar

Question

Currently it just displays the name of the application and I want it to display something custom and be different for each screen in my app.

For example: my home scr

Answer 1

The easiest way is to call this.setTitle("...") if you are in the activity. And if you are in a fragment, just call getActivity().setTitle("...");

This way will let you change the title anytime, no need to call it before setContentView(R.layout.activity_test);