折叠时未设置片段标题中的CollapsingToolbarLayout

Question

I have a toolbar in CollapsingToolbarLayout inside AppBarLayout . I set title in onResume (). When I open activity and fragment, the title is shown correctly. But if I collapse it and press home button and open it again, it is not there anymore. However if I press home button when layout is expanded, the title appears as expected. Here is the code of setting the title:

((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
    final ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
    if (actionBar != null) {
        actionBar.setDisplayShowTitleEnabled(true);
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setTitle("TITLE HERE");
        toolbar.setTitle("TITLE HERE");
    }

What is wrong? Is it a bug in support library or am I doing something wrong?

Answer 1

try setting the title of the collapsing toolbar layout. Example:

collapsingToolbarLayout = (CollapsingToolbarLayout)view.findViewById(R.id.collapsing_toolbar_layout);
collapsingToolbarLayout.setTitle("title");