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import React from 'react'; | |
import { StyleSheet, View } from 'react-native'; | |
import { PanGestureHandler } from 'react-native-gesture-handler'; | |
import Animated, { | |
useAnimatedGestureHandler, | |
useAnimatedStyle, | |
useSharedValue, | |
withSpring, | |
} from 'react-native-reanimated'; | |
const Snappable = (props) => { | |
const startingPosition = 0; | |
const x = useSharedValue(startingPosition); | |
const y = useSharedValue(startingPosition); | |
const animatedStyle = useAnimatedStyle(() => { | |
return { | |
transform: [{ translateX: x.value }, { translateY:y.value }], | |
}; | |
}); | |
const eventHandler = useAnimatedGestureHandler({ | |
onStart: (event, ctx) => { | |
ctx.startX = x.value; | |
ctx.startY = y.value; | |
}, | |
onActive: (event, ctx) => { | |
x.value = ctx.startX + event.translationX; | |
y.value = ctx.startY + event.translationY; | |
}, | |
onEnd: (event, ctx) => { | |
x.value = withSpring(startingPosition); | |
y.value = withSpring(startingPosition); | |
}, | |
}); | |
return ( | |
<PanGestureHandler onGestureEvent={eventHandler}> | |
<Animated.View style={animatedStyle}>{props.children}</ | |
Animated.View> | |
</PanGestureHandler> | |
); | |
}; | |
const Example = () => { | |
return ( | |
<View style={styles.container}> | |
<Snappable> | |
<View style={styles.box} /> | |
</Snappable> | |
</View> | |
); | |
}; | |
export default Example; | |
const BOX_SIZE = 100; | |
const styles = StyleSheet.create({ | |
container: { | |
flex: 1, | |
justifyContent: 'center', | |
alignItems: 'center', | |
backgroundColor: '#F5FCFF', | |
}, | |
box: { | |
width: BOX_SIZE, | |
height: BOX_SIZE, | |
borderColor: '#F5FCFF', | |
alignSelf: 'center', | |
backgroundColor: 'plum', | |
margin: BOX_SIZE / 2, | |
}, | |
}); |
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