Created
May 16, 2016 13:09
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React Native Animated Sample
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| import React, { Component } from 'react'; | |
| import { | |
| AppRegistry, | |
| StyleSheet, | |
| Text, | |
| View, | |
| Animated, | |
| TouchableWithoutFeedback, | |
| LayoutAnimation | |
| } from 'react-native'; | |
| export default class ReactNativeAnimatedSample extends Component { | |
| constructor(props: any) { | |
| super(props); | |
| this.state = { | |
| greenWidth: 100, | |
| whiteDegree: new Animated.Value(0), | |
| yellowScale: new Animated.Value(1), | |
| backgroundColor: new Animated.Value(0) | |
| }; | |
| } | |
| componentWillMount() { | |
| } | |
| componentDidMount() { | |
| this.state.yellowScale.addListener((value) => this._yellowScale = value.value); | |
| this.state.yellowScale.setValue(1); | |
| this._changeBackgroundColor(); | |
| } | |
| _changeBackgroundColor() { | |
| this.state.backgroundColor.setValue(0); | |
| this.state.whiteDegree.setValue(0); | |
| Animated.sequence([ | |
| Animated.parallel([ | |
| Animated.timing( | |
| this.state.backgroundColor, | |
| {toValue: 300, duration: 2000} | |
| ), | |
| Animated.spring( | |
| this.state.whiteDegree, | |
| {toValue: 1, duration: 1500} | |
| ) | |
| ]), | |
| Animated.parallel([ | |
| Animated.timing( | |
| this.state.backgroundColor, | |
| {toValue: 0, duration: 2000} | |
| ), | |
| Animated.spring( | |
| this.state.whiteDegree, | |
| {toValue: 0, duration: 1500} | |
| ) | |
| ]) | |
| ]).start(this._changeBackgroundColor.bind(this)); | |
| } | |
| _onPressGreen() { | |
| LayoutAnimation.spring(); | |
| this.setState({greenWidth: this.state.greenWidth + 20}); | |
| } | |
| _onPressYellow() { | |
| Animated.spring( | |
| this.state.yellowScale, | |
| { | |
| toValue: this._yellowScale - 0.1, | |
| friction: 1, | |
| } | |
| ).start(); | |
| } | |
| render() { | |
| var color = this.state.backgroundColor.interpolate({ | |
| inputRange: [0, 150, 300], | |
| outputRange: ['rgba(1, 87, 155, 1.0)', 'rgba(26, 35, 255, 1.0)', 'rgba(38, 50, 56, 1.0)'] | |
| }); | |
| var deg = this.state.whiteDegree.interpolate({ | |
| inputRange: [0, 1], | |
| outputRange: ['0deg', '180deg'] | |
| }); | |
| return ( | |
| <Animated.View style={[styles.container, {backgroundColor: color}]}> | |
| <Animated.View style={{backgroundColor: "ghostwhite", shadowColor: "lightgray", borderRadius: 6, width: 100, height: 100, margin: 20, transform: [{rotate: deg}]}}/> | |
| <TouchableWithoutFeedback onPress={this._onPressGreen.bind(this)}> | |
| <View style={{backgroundColor: "green", width: this.state.greenWidth, height: 100, margin: 20}}/> | |
| </TouchableWithoutFeedback> | |
| <TouchableWithoutFeedback onPress={this._onPressYellow.bind(this)}> | |
| <Animated.View | |
| style={{ | |
| backgroundColor: "yellow", | |
| width: 100, | |
| height: 100, | |
| transform: [ | |
| {scale: this.state.yellowScale}, | |
| ] | |
| }} | |
| /> | |
| </TouchableWithoutFeedback> | |
| </Animated.View> | |
| ); | |
| } | |
| } | |
| const styles = StyleSheet.create({ | |
| container: { | |
| flex: 1, | |
| justifyContent: 'center', | |
| alignItems: 'center' | |
| } | |
| }); |
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