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https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Alan Kenyon
57a1e7c000
Summary:
`<VirtualizedList />` will throw an error if the `renderItem` Prop component uses hooks. Function components without hooks and class components work without issue.
Super contrived Example
```{js}
function FlatListItem({ item }) {
React.useEffect(() => console.log(item),[])
return (<Text>{item}</Text>);
}
<FlatList data={[1, 2, 3]} renderItem={FlatListItem} />
```
Example Error:
```
Invariant Violation: Hooks can only be called inside the body of a function component. (https://fb.me/react-invalid-hook-call)
This error is located at:
in CellRenderer (at VirtualizedList.js:688)
in RCTScrollContentView (at ScrollView.js:976)
in RCTScrollView (at ScrollView.js:1115)
in ScrollView (at VirtualizedList.js:1081)
in VirtualizedList (at FlatList.js:632)
in FlatList (at WithoutScrollbars.js:21)
...
```
## Changelog
[General] [Added] - VirtualizedList ListItemComponent. An alternative to renderItem that accepts function components with hooks.
[General][Added] - FlatList ListItemComponent. An alternative to renderItem that accepts function components with hooks.
[General][Added] - VirtualizedList and FlatList tests and updated RNTester example
Pull Request resolved: https://github.com/facebook/react-native/pull/24832
Reviewed By: sahrens
Differential Revision: D15334020
Pulled By: cpojer
fbshipit-source-id: 882db722fd6e22f07260b08091b3456d1c66c2c8