Getting Toolbar in Fragment

Question

I set up a toolbar in my main activity and when I go inside a fragment, I want to add a slider on it. If I had had the access to the Toolbar object, I would simply do:

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);


Spinner mNavigationSpinner = new SpinnerTrigger(getSupportActionBar().getThemedContext());
toolbar.addView(mNavigationSpinner);

But if I get it using

((ActionBarActivity) getActivity()).getSupportActionBar()

I don't have any addView() method. So my question is, how can I add a view to the Toolbar in fragment if the Toolbar itself was created in an Activity.

I'm not sure if this is the best view of going about this, but I don't think I can have the Spinner in defined in the layout, because most of my fragments don't use it, they simply set a title to the toolbar. But at the same time, it would be great if I could define the toolbar once in the main activity and not redo it for every fragment.

Solution 1

Another way of achieving the same thing from Ellitz answer, inside the fragment access the toolbar (or any other view inside activity) directly:

Toolbar toolbar = (Toolbar) getActivity().findViewById(R.id.toolbar);

Solution 2

you can get it using

Toolbar refTool = ((NameOfClass)getActivity()).toolbar;

or, create an instance of your MainActivity, then, override onAttach(Activity activity) and assign your instance object of MainActivity to the activity in onAttach()