How to Get Toolbar from Fragment

How to get Toolbar from fragment?

You need to cast your activity from getActivity() to AppCompatActivity first. Here's an example:

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

The reason you have to cast it is because getActivity() returns a FragmentActivity and you need an AppCompatActivity

In Kotlin:

(activity as AppCompatActivity).supportActionBar?.title = "My Title"

Access Toolbar (and its children) from fragment?

I'm not sure if this works, but you can try it.

    final AppCompatActivity act = (AppCompatActivity) getActivity();
    if (act.getSupportActionBar() != null) {
        Toolbar toolbar = (Toolbar) act.getSupportActionBar().getCustomView();
    }

Toolbar is essentially a ViewGroup.

Getting Toolbar in Fragment

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);

Access Toolbar (MaterialToolbar) from Fragment?

You can use:

(activity as AppCompatActivity).supportActionBar

Just a little explanation:

activity returns a FragmentActivity which handles an android.app.ActionBar.

You are using an AppCompatActivity which handles an androidx.appcompat.app.ActionBar.

They are different.

Using Toolbar with Fragments

Fragments don't have such method setSupportActionBar(). ActionBar is a property of Activity, so to set your toolbar as the actionBar, your activity should extend from ActionBarActivity and then you can call in your Fragment:

 ((ActionBarActivity)getActivity()).setSupportActionBar(mToolbar);

UPDATE

If you're using AppCompatActivity :

 ((AppCompatActivity)getActivity()).setSupportActionBar(mToolbar);

How to add Toolbar to a fragment in android?

Cast your activity from getActivity() to AppCompatActivity first. I think this will solve your error:

((AppCompatActivity) getActivity()).getSupportActionBar(toolbar);

Or in your case:

((AppCompatActivity) getActivity()).setSupportActionController(toolbar);

getActivity() returns a FragmentActivity and you need to get AppCompatActivity returned. Hope this helps!

Add Toolbar inside fragment (AndroidX)

so what was the successfull answer for me:

Inside onCreate method just add setHasOptionsMenu(true);

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
    }

Inside my WallFragment.java in onCreateView I added setOnMenuItemClickListener just right after initializing the Toolbar

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View inflatedView = inflater.inflate(R.layout.fragment_wall, container, false);

        TopActivityToolbar = inflatedView.findViewById(R.id.update_wall_page_toolbar);
        TopActivityToolbar.setTitle("someTitle");
        TopActivityToolbar.inflateMenu(R.menu.menu_app_actionbar_wall);

        // and finally set click listener
        TopActivityToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                // Your code inside Toolbar onClick...
                return false;
            }
        });
        return inflatedView;
    }

Do not forget to to INFLATE the menu from res/menu/...

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