Android Studio how to change top bar title

Question

I have this navigation-drawer with fragments. I want that every time I go to a section of this, change the title above in the image it says "Usario"

Image of Navigation Drawer

Answer 1

Everytime you change the fragment, set the title of your activity.

fragmentTransaction.commit();
setTitle("something");

Answer 2

尝试这个

((AppCompatActivity) getActivity()).getSupportActionBar().setTitle("Usario");