tree 014694a0aa93bf7488f889b652621d2876e9fa55
parent abd098954d3fe996f336201ccb25884aaa34e07f
author Chris Craik <ccraik@google.com> 1504894746 -0700
committer Chris Craik <ccraik@google.com> 1505266796 -0700

Paging doc codesample improvements, api cleanup

Added detail to several docs:
- Both DataSources, added invalidation code.
- All Adapters/AdapterHelpers, added DiffCallback samples
- Simplified samples by removing @NonNull/@Nullable in specific cases

Also rename loadCount -> countItems, to match with the KeyedDataSource
counting APIs.

Avoid need for LiveListAdapterUtil by using a weak reference from the
PagedList to the data presentation layer (Adapter/AdapterHelper)

Bug: 64809611
Test: ./gradlew createFlatfootDocsArchive -PofflineDocs=true

Change-Id: I2df5a9891a96e96f009a311100d7ff4b48a01d3f