tree 47a52595f4e8b32c55570a4a3dae78b16e38b965
parent a8ab8e953088ecb34eb0c6c420655cc603bd920a
author Ian Lake <ilake@google.com> 1562090964 -0700
committer Ian Lake <ilake@google.com> 1564177063 -0700

Add default ViewModel Factory interface

Use a marker interface to allow instances of
ViewModelStoreOwner, such as ComponentActivity
and Fragment, to provide a default
ViewModelProvider.Factory that can be used with
a new, concise ViewModelProvider constructor.

This updates ComponentActivity and Fragment to
use that new API to provide an
AndroidViewModelFactory by default. It updates
the 'by viewModels' Kotlin extensions to use
this default Factory if one isn't explicitly
provided.

Test: updated tests pass
BUG: 110936593
Change-Id: If3354f4c427a035a4b21c6715cfb00880484549d