Summary:
Add the possibility to define a progress view top offset to RefreshControl on android. As i comment in #6740, contentInset does the trick on IOS.
Looking android documentation seems that exists a possible solution:
http://developer.android.com/reference/android/support/v4/widget/SwipeRefreshLayout.html#setProgressViewOffset(boolean, int, int)
This pull request implement that but keeping it simple, only a top offset.
For example, now we could put navigation bar over the scrollview (or listview) and define a progressViewOffset on RefreshView in order to start behind the navigation. At this point we could make some kind of coordinator layout to hide/show navigation on scroll.
To maintain the default behavior, start point is equal to start point minus progress circle diameter in order to create that progress circle before the start point.
Closes https://github.com/facebook/react-native/pull/6759
Differential Revision: D3240664
Pulled By: mkonicek
fb-gh-sync-id: ccf866272e871811c1c6dcc2a34f5c217967feee
fbshipit-source-id: ccf866272e871811c1c6dcc2a34f5c217967feee
f7ce0c1c2f