maintainVisibleContentPosition
prop support for Android react-native.Note: Doesn’t support Expo managed workflow. There is a feature request open for expo - https://expo.canny.io/feature-requests/p/android-maintainvisiblecontentposition-on-flatlist (please upvote)
In react-native, ScrollView (and FlatList) component have support for a prop maintainVisibleContentPosition
, which is really useful for chat-like applications where you want to see new messages scroll into place. Also you might need it in other applications where you need bi-directional infinite scroll. Although currently its only supported on iOS. So here we have built a simple wrapper for FlatList and ScrollView to add support for this prop for android. On iOS, we simply return FlatList and ScrollView from react-native package.
We built this wrapper for our in-house react-native chat sdk, but we are making it public, in case it helps other devs from react-native community.
Credits: Thanks to stackia for https://github.com/facebook/react-native/pull/29466#issuecomment-664367382
# clone the repo
git clone https://github.com/GetStream/flat-list-mvcp.git
cd flat-list-mvcp/Example
# Install npm and pod dependencies
yarn; npx pod-install;
# run the app
npx react-native run-android
yarn add @stream-io/flat-list-mvcp
import { FlatList, ScrollView } from '@stream-io/flat-list-mvcp';
<FlatList
maintainVisibleContentPosition={{
autoscrollToTopThreshold: 10,
minIndexForVisible: 1,
}}
...
/>
<ScrollView
maintainVisibleContentPosition={{
autoscrollToTopThreshold: 10,
minIndexForVisible: 1,
}}
...
/>
PRs for improvement are welcome :)
Author: GetStream
Source Code: https://github.com/GetStream/flat-list-mvcp
#react-native #react #mobile-apps