CollapsingToolbarLayout setTitle() does not update unless collapsed

Question

With the new Design Library, we\'re supposed to set the toolbar title on the CollapsingToolbarLayout, not the Toolbar itself(at least when using th

Answer 1

In my solution I had to set the title for both the toolbar and the collapsing toolbar for it to work.

So in OnCreate:

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

    collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);

And then further down when I switch fragments I set the title for both when a tab is selected:

            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                FragmentManager fm = getSupportFragmentManager();
                FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

                //TAB1 - THE DEFAULT TAB
                switch (item.getItemId()) {

                        case R.id.tab_rooms:
                            toolbar.setTitle("My Title");
                            collapsingToolbar.setTitle("My Title");
                            fm.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
                            fragment = new RoomsFragment();
                            transaction.replace(R.id.fragment_container, fragment);
                            transaction.addToBackStack(null);
                            transaction.commit();

                            return true;

                        case R.id.tab_shisha:
                            toolbar.setTitle("My Title2");
                            collapsingToolbar.setTitle("My Title2");
                            fm.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
                            fragment = new ShishaFragment();
                            transaction.replace(R.id.fragment_container, fragment);
                            transaction.addToBackStack(null);
                            transaction.commit();
                            return true;
                          }

                    return false;
                }

Hope that helps someone!