How to set an icon at the end of Toolbar

Question

I want to set an icon at the the end of my Toolbar,which start another activity. My Toolbar portion

Answer 1

Then in OnCreateView: setHasOptionsMenu(true); Closing the OncreateView below write this: @Override

public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.pdf, menu);
    ...
}