How to use app:items=“@{viewModel.items}” attribute with RecyclerView, MVVM and data binding?

问题

There is an app:items="" attribute for RecyclerView, how is this attribute used with MVVM and android.arch.lifecycle.ViewModel, not ViewModel that extends BaseObservable? items could be LiveData, List or ObservableArrayList, with which collection should it be used?

来源：https://stackoverflow.com/questions/51078439/how-to-use-appitems-viewmodel-items-attribute-with-recyclerview-mvvm-and