Summary:
Android ScrollView/HorizontalScrollView `smoothScrollTo` contains some logic that, if called multiple times in a short amount of
time, will treat all calls as part of the same animation and will not lengthen the duration
of the animation. This means that, for example, if the user is scrolling rapidly, multiple
pages could be considered part of one animation, causing some page animations to be animated
very rapidly - looking like they're not animated at all.
We use a custom animation to perform `smoothScrollTo` to improve the UX.
This resolves a longstanding issue in non-Fabric RN, as well as Fabric, since this code is shared between the platforms.
Changelog: [Update] Android ScrollView/HorizontalScrollView scrolls using custom animations instead of default Android `smoothScrollTo` implementation, leading to smoother scrolls for paginated ScrollViews
Reviewed By: mdvacca
Differential Revision: D21416520
fbshipit-source-id: 6ebe63cb054a98336b6e81253d35623fe5522f89
Joshua GrossandFacebook GitHub Bot
10314fe621