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SecondView.js
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SecondView.js
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import React from 'react'
import { View, Animated, Dimensions, Image, Easing } from 'react-native'
const { width, height } = Dimensions.get('window')
export default class extends React.Component {
constructor() {
super()
this.state = {
anim: new Animated.Value(0)
}
}
componentDidMount() {
this.startAnimation()
}
startAnimation = () => {
Animated.timing(this.state.anim, {
duration: 500,
toValue: 1,
easing: Easing.elastic(0.04),
}).start()
}
render() {
const borderWidth = this.state.anim.interpolate({
inputRange: [0, 1],
outputRange: [480, 50]
})
const wid = 1000
return (
<Animated.View style={{
position: 'absolute',
alignItems: 'center',
justifyContent: 'center',
width,
height,
backgroundColor: 'transparent'
}} >
<Animated.View
style={{
position: 'absolute',
width: wid,
height: wid,
borderRadius: wid / 2,
borderColor: 'white',
borderWidth,
backgroundColor: 'transparent'
}}
/>
</Animated.View>
)
}
}