BoxInsetLayout is a more advanced and flexible version of WatchViewStub. It was introduced with the Android wear 2.0, but is also available as part of the Support Library
BoxInsetLayout is a screen shape-aware FrameLayout that can box its children in the center square of a round screen by using the layout_box
attribute. The values for this attribute specify the child's edges to be boxed in: left|top|right|bottom
or all. The layout_box attribute is ignored
on a device with a rectangular screen.