The "layout_*" attributes are a bit special in that they are specified on an element, but are provided by the element's container. Rather than affecting the ele

The "layout_*" attributes are a bit special in that they are specified on an element, but are provided by the element's container. Rather than affecting the element and its children, such attributes affect the element's relationship with its container/siblings. So in this case, the attribute is "alignSelf", but it is defined and understood by FlexboxLayout rather than the TextView that specifies it. Perhaps this isn't the best implementation of such namespacing (maybe they could've done something more with xmlns?) but I find the visual and semantic distinction useful when reading and writing layouts.