import net.opacapp.multilinecollapsingtoolbar.CollapsingToolbarLayout; //导入依赖的package包/类
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_event_detail);
    toolbar1 = (Toolbar) findViewById(R.id.toolbar);
    toolbar2 = (Toolbar) findViewById(R.id.toolbar2);
    ImageView icon = (ImageView) findViewById(R.id.icon);
    collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
    onCreateHeader(icon);

    final CharSequence title = onCreateTitle();
    if (title != null) {
        collapsingToolbar.setTitle(title);
    }

    setSupportActionBar(toolbar1);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setDisplayShowHomeEnabled(true);
    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list);
    onSetupRecyclerView(recyclerView);
}
 

import net.opacapp.multilinecollapsingtoolbar.CollapsingToolbarLayout; //导入依赖的package包/类
void setView() {
    layoutLoading.setVisibility(View.GONE);
    layoutOnError.setVisibility(View.GONE);

    CollapsingToolbarLayout collapsingToolbarLayout = findViewById(R.id.toolbar_layout);
    AppBarLayout appBar = findViewById(R.id.app_bar);
    collapsingToolbarLayout.setTitle(event.name);
    appBar.setBackgroundColor(Tag.getTagColor(event));

    FragmentManager manager = getSupportFragmentManager();

    if (eventFragment != null)
        manager.beginTransaction().remove(eventFragment).commitNow();

    eventFragment = EventFragment.newInstance(event);
    manager.beginTransaction()
            .add(R.id.fragment_container, eventFragment).commit();
}
 

import net.opacapp.multilinecollapsingtoolbar.CollapsingToolbarLayout; //导入依赖的package包/类
@BindingAdapter("categoryVividColor")
public static void setCategoryVividColor(CollapsingToolbarLayout view, @NonNull Category category) {
    view.setContentScrimColor(ContextCompat.getColor(view.getContext(), category.getVividColorResId()));
}