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Janic Duplessis
c19548728c
Summary: This adds support for `maintainVisibleContentPosition` on Android. The implementation is heavily inspired from iOS, it works by finding the first visible view and its frame before views are update, then adjusting the scroll position once the views are updated. Most of the logic is abstracted away in MaintainVisibleScrollPositionHelper to be used in both vertical and horizontal scrollview implementations. Note that this only works for the old architecture, I have a follow up ready to add fabric support. ## Changelog <!-- Help reviewers and the release process by writing your own changelog entry. For an example, see: https://reactnative.dev/contributing/changelogs-in-pull-requests --> [Android] [Added] - Add maintainVisibleContentPosition support on Android Pull Request resolved: https://github.com/facebook/react-native/pull/35049 Test Plan: Test in RN tester example on Android https://user-images.githubusercontent.com/2677334/197319855-d81ced33-a80b-495f-a688-4106fc699f3c.mov Reviewed By: ryancat Differential Revision: D40642469 Pulled By: skinsshark fbshipit-source-id: d60f3e2d0613d21af5f150ca0d099beeac6feb91