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ReactNative LayoutAnimation
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'use strict'; | |
import React, { | |
AppRegistry, | |
Component, | |
StyleSheet, | |
Text, | |
View, | |
TouchableOpacity, | |
LayoutAnimation, | |
} from 'react-native'; | |
var CustomLayoutAnimation = { | |
duration: 200, | |
create: { | |
type: LayoutAnimation.Types.linear, | |
property: LayoutAnimation.Properties.opacity, | |
}, | |
update: { | |
type: LayoutAnimation.Types.curveEaseInEaseOut, | |
}, | |
}; | |
class AnimationExample extends Component { | |
constructor() { | |
super(); | |
this.state = { | |
index: 0, | |
} | |
} | |
onPress(index) { | |
// Uncomment to animate the next state change. | |
LayoutAnimation.configureNext(LayoutAnimation.Presets.spring); | |
// Or use a Custom Layout Animation | |
// LayoutAnimation.configureNext(CustomLayoutAnimation); | |
this.setState({index: index}); | |
} | |
renderButton(index) { | |
return ( | |
<TouchableOpacity key={'button' + index} style={styles.button} onPress={() => this.onPress(index)}> | |
<Text>{index}</Text> | |
</TouchableOpacity> | |
); | |
} | |
renderCircle(key) { | |
var size = 50; | |
return ( | |
<View key={key} style={{width: size, height: size, borderRadius: size / 2.0, backgroundColor: 'sandybrown', margin: 20}}/> | |
); | |
} | |
render() { | |
var leftStyle = this.state.index === 0 ? {flex: 1} : {width: 20}; | |
var middleStyle = this.state.index === 2 ? {width: 20} : {flex: 1}; | |
var rightStyle = {flex: 1}; | |
var whiteHeight = this.state.index * 80; | |
var circles = []; | |
for (var i = 0; i < (5 + this.state.index); i++) { | |
circles.push(this.renderCircle(i)); | |
} | |
return ( | |
<View style={styles.container}> | |
<View style={styles.topButtons}> | |
{this.renderButton(0)} | |
{this.renderButton(1)} | |
{this.renderButton(2)} | |
</View> | |
<View style={styles.content}> | |
<View style={{flexDirection: 'row', height: 100}}> | |
<View style={[leftStyle, {backgroundColor: 'firebrick'}]}/> | |
<View style={[middleStyle, {backgroundColor: 'seagreen'}]}/> | |
<View style={[rightStyle, {backgroundColor: 'steelblue'}]}/> | |
</View> | |
<View style={{height: whiteHeight, justifyContent: 'center', alignItems: 'center', overflow: 'hidden'}} removeClippedSubviews={true}> | |
<View> | |
<Text>Stuff Goes Here</Text> | |
</View> | |
</View> | |
<View style={styles.circleContainer}> | |
{circles} | |
</View> | |
</View> | |
</View> | |
); | |
} | |
} | |
const styles = StyleSheet.create({ | |
container: { | |
flex: 1, | |
justifyContent: 'center', | |
alignItems: 'center', | |
backgroundColor: '#F5FCFF', | |
}, | |
topButtons: { | |
marginTop: 22, | |
flexDirection: 'row', | |
alignItems: 'center', | |
justifyContent: 'center', | |
alignSelf: 'stretch', | |
backgroundColor: 'lightblue', | |
}, | |
button: { | |
flex: 1, | |
height: 60, | |
alignSelf: 'stretch', | |
backgroundColor: 'white', | |
alignItems: 'center', | |
justifyContent: 'center', | |
margin: 8, | |
}, | |
content: { | |
flex: 1, | |
alignSelf: 'stretch', | |
}, | |
circleContainer: { | |
flexDirection: 'row', | |
flex: 1, | |
flexWrap: 'wrap', | |
padding: 30, | |
justifyContent: 'center', | |
alignItems: 'center' | |
}, | |
}); | |
AppRegistry.registerComponent('AnimationExample', () => AnimationExample); |
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