This wear-specific implementation of LinearLayoutManager provides basic
offsetting logic for updating child layout.
A LayoutManager is responsible for measuring and positioning item views
within a RecyclerView as well as determining the policy for when to recycle
item views that are no longer visible to the user. By changing the LayoutManager
a RecyclerView can be used to implement a standard vertically scrolling list,
a uniform grid, staggered grids, horizontally scrolling collections and more. Several stock
layout managers are provided for general use.
If the LayoutManager specifies a default constructor or one with the signature
(Context, AttributeSet, int, int), RecyclerView will
instantiate and set the LayoutManager when being inflated. Most used properties can
be then obtained from getProperties(Context, AttributeSet, int, int). In case
a LayoutManager specifies both constructors, the non-default constructor will take
To be called only during onLayoutChildren(Recycler, State) to add a view
to the layout that is known to be going away, either because it has been
removed or because it is actually not in the
visible portion of the container but is being laid out in order to inform RecyclerView
in how to animate the item out of view.