OnEndReached calls on initial render and is called even if data is empty
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Description
Description
OnEndReached calls on initial render when the app runs each time on the first time and is called even if data is empty
React Native Version
0.71.1
Output of npx react-native info
System:
OS: macOS 13.3.1
CPU: (8) arm64 Apple M1
Memory: 207.19 MB / 8.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 18.16.0 - /opt/homebrew/opt/node@18/bin/node
Yarn: 1.22.19 - /opt/homebrew/bin/yarn
npm: 9.5.1 - /opt/homebrew/opt/node@18/bin/npm
Watchman: 2023.05.08.00 - /opt/homebrew/bin/watchman
Managers:
CocoaPods: 1.12.1 - /opt/homebrew/bin/pod
SDKs:
iOS SDK:
Platforms: DriverKit 22.2, iOS 16.2, macOS 13.1, tvOS 16.1, watchOS 9.1
Android SDK: Not Found
IDEs:
Android Studio: 2022.2 AI-222.4459.24.2221.9971841
Xcode: 14.2/14C18 - /usr/bin/xcodebuild
Languages:
Java: 11.0.19 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: 18.2.0 => 18.2.0
react-native: 0.71.1 => 0.71.1
react-native-macos: Not Found
npmGlobalPackages:
react-native: Not Found
Steps to reproduce
create a project with the following code
Snack, code example, screenshot, or link to a repository
const HomeScreen = () => {
return (
<SafeAreaView style={{flex:1}}>
<FlatList
data={[]}
renderItem={() => {
return (
<View
style={{
height: 100,
backgroundColor: 'red',
borderRadius: 20,
marginBottom: 20,
}}>
<CustomText>welcome</CustomText>
</View>
);
}}
ListEmptyComponent={() => {
return (
<View>
<Text>Empty List</Text>
</View>
);
}}
onEndReached={() => {
console.log('onEndReached');
}}
/>
</SafeAreaView>
)
}
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the FlatList onEndReached behavior using the provided empty-data example and the linked reproduction repository. Reproduce the initial render case, then trace the FlatList entry point to determine why the callback runs with no data; done means the callback no longer runs on initial render when the list is empty.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- react-native
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100