add docs for attaching onPageScroll handler with reanimated #491
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -13,5 +13,6 @@ module.exports = { | |
| }, | ||
| }, | ||
| ], | ||
| 'react-native-reanimated/plugin', | ||
| ], | ||
| }; | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| import React from 'react'; | ||
| import { View, StyleSheet, Text } from 'react-native'; | ||
| import PagerView from 'react-native-pager-view'; | ||
| import Animated, { useHandler, useEvent } from 'react-native-reanimated'; | ||
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| const AnimatedPager = Animated.createAnimatedComponent(PagerView); | ||
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| export function usePagerScrollHandler(handlers: any, dependencies?: any) { | ||
| const { context, doDependenciesDiffer } = useHandler(handlers, dependencies); | ||
| const subscribeForEvents = ['onPageScroll']; | ||
|
|
||
| return useEvent<any>( | ||
| (event) => { | ||
| 'worklet'; | ||
| const { onPageScroll } = handlers; | ||
| if (onPageScroll && event.eventName.endsWith('onPageScroll')) { | ||
| onPageScroll(event, context); | ||
| } | ||
| }, | ||
| subscribeForEvents, | ||
| doDependenciesDiffer | ||
| ); | ||
| } | ||
|
|
||
| export default () => { | ||
| const handler = usePagerScrollHandler({ | ||
| onPageScroll: (e: any) => { | ||
| 'worklet'; | ||
| console.log(e.offset, e.position); | ||
| }, | ||
| }); | ||
|
|
||
| return ( | ||
| <AnimatedPager | ||
| style={styles.pagerView} | ||
| initialPage={0} | ||
| onPageScroll={handler} | ||
| > | ||
| <View key="1"> | ||
| <Text>First page</Text> | ||
| </View> | ||
| <View key="2"> | ||
| <Text>Second page</Text> | ||
| </View> | ||
| <View key="3"> | ||
| <Text>Third page</Text> | ||
| </View> | ||
| </AnimatedPager> | ||
| ); | ||
| }; | ||
|
|
||
| const styles = StyleSheet.create({ | ||
| pagerView: { | ||
| flex: 1, | ||
| }, | ||
| }); |
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These changes are from reanimated installation steps