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documentation(swipeToDelete): update example with a copy/pastable sample
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,62 +1,211 @@ | ||
| # Swipe To Delete | ||
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|  | ||
|  | ||
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| ```javascript | ||
| import React, { Component } from 'react'; | ||
| import { | ||
| Animated, | ||
| Dimensions, | ||
| Image, | ||
| StyleSheet, | ||
| Text, | ||
| TouchableOpacity, | ||
| TouchableHighlight, | ||
| View, | ||
| } from 'react-native'; | ||
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| constructor(props) { | ||
| super(props); | ||
| this.state = { | ||
| listViewData: Array(20).fill('').map((_,i) => ({key: `${i}`, text: `item #${i}`})), | ||
| }; | ||
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| this.rowTranslateAnimatedValues = {}; | ||
| Array(20).fill('').forEach((_, i) => { | ||
| this.rowTranslateAnimatedValues[`${i}`] = new Animated.Value(1); | ||
| }); | ||
| } | ||
| import { SwipeListView } from 'react-native-swipe-list-view'; | ||
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| onSwipeValueChange = (swipeData) => { | ||
| const { key, value } = swipeData; | ||
| // 375 or however large your screen is (i.e. Dimensions.get('window').width) | ||
| if (value < -375 && !this.animationIsRunning) { | ||
| this.animationIsRunning = true; | ||
| Animated.timing(this.rowTranslateAnimatedValues[key], { toValue: 0, duration: 200 }).start(() => { | ||
| const newData = [...this.state.listViewData]; | ||
| const prevIndex = this.state.listViewData.findIndex(item => item.key === key); | ||
| newData.splice(prevIndex, 1); | ||
| this.setState({listViewData: newData}); | ||
| this.animationIsRunning = false; | ||
| class DeleteSwipeListView extends Component { | ||
| constructor(props) { | ||
| super(props); | ||
| this.state = { | ||
| listType: 'FlatList', | ||
| listViewData: Array(20) | ||
| .fill('') | ||
| .map((_, i) => ({ key: `${i}`, text: `item #${i}` })), | ||
| }; | ||
| this.rowTranslateAnimatedValues = {}; | ||
| Array(20).fill('').forEach((_, i) => { | ||
| this.rowTranslateAnimatedValues[`${i}`] = new Animated.Value(1); | ||
| }); | ||
| } | ||
| } | ||
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| render() { | ||
| return ( | ||
| <SwipeListView | ||
| useFlatList | ||
| data={this.state.listViewData} | ||
| renderItem={ (data, rowMap) => ( | ||
| <Animated.View style={[styles.rowFrontContainer, | ||
| { | ||
| height: this.rowTranslateAnimatedValues[data.item.key].interpolate({ | ||
| inputRange: [0, 1], | ||
| outputRange: [0, 50], | ||
| }) | ||
| } | ||
| ]}> | ||
| closeRow(rowMap, rowKey) { | ||
| if (rowMap[rowKey]) { | ||
| rowMap[rowKey].closeRow(); | ||
| } | ||
| } | ||
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| deleteRow(rowMap, rowKey) { | ||
| this.closeRow(rowMap, rowKey); | ||
| const newData = [...this.state.listViewData]; | ||
| const prevIndex = this.state.listViewData.findIndex( | ||
| item => item.key === rowKey | ||
| ); | ||
| newData.splice(prevIndex, 1); | ||
| this.setState({ listViewData: newData }); | ||
| } | ||
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| onRowDidOpen = rowKey => { | ||
| console.log('This row opened', rowKey); | ||
| }; | ||
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| onSwipeValueChange = swipeData => { | ||
| const { dimensions } = this.props; | ||
| const { key, value } = swipeData; | ||
| if (value < -dimensions.width && !this.animationIsRunning) { | ||
| this.animationIsRunning = true; | ||
| Animated.timing(this.rowTranslateAnimatedValues[key], { toValue: 0, duration: 200 }).start(() => { | ||
| const newData = [...this.state.listViewData]; | ||
| const prevIndex = this.state.listViewData.findIndex(item => item.key === key); | ||
| newData.splice(prevIndex, 1); | ||
| this.setState({listViewData: newData}); | ||
| this.animationIsRunning = false; | ||
| }); | ||
| } | ||
| }; | ||
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| getStyles() { | ||
| const { dimensions } = this.props; | ||
| return StyleSheet.create({ | ||
| backTextWhite: { | ||
| color: '#FFF', | ||
| }, | ||
| rowFront: { | ||
| alignItems: 'center', | ||
| backgroundColor: '#CCC', | ||
| borderBottomColor: 'black', | ||
| borderBottomWidth: 1, | ||
| justifyContent: 'center', | ||
| height: 50, | ||
| }, | ||
| rowBack: { | ||
| alignItems: 'center', | ||
| backgroundColor: '#DDD', | ||
| flex: 1, | ||
| flexDirection: 'row', | ||
| justifyContent: 'space-between', | ||
| paddingLeft: 15, | ||
| }, | ||
| backRightBtn: { | ||
| alignItems: 'center', | ||
| bottom: 0, | ||
| justifyContent: 'center', | ||
| position: 'absolute', | ||
| top: 0, | ||
| width: 75, | ||
| }, | ||
| backRightBtnLeft: { | ||
| backgroundColor: 'blue', | ||
| right: 75, | ||
| }, | ||
| backRightBtnRight: { | ||
| backgroundColor: 'red', | ||
| right: 0, | ||
| }, | ||
| trash: { | ||
| height: 25, | ||
| width: 25, | ||
| }, | ||
| }); | ||
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| } | ||
| render() { | ||
| const { dimensions } = this.props; | ||
| const styles = this.getStyles(); | ||
| return ( | ||
| <SwipeListView | ||
| data={this.state.listViewData} | ||
| renderItem={data => ( | ||
| <Animated.View | ||
| style={[styles.rowFrontContainer, { | ||
| height: this.rowTranslateAnimatedValues[data.item.key].interpolate({ | ||
| inputRange: [0, 1], | ||
| outputRange: [0, 50], | ||
| })}]} | ||
| > | ||
| <TouchableHighlight | ||
| onPress={ () => console.log('You touched me') } | ||
| onPress={() => console.log('You touched me')} | ||
| style={styles.rowFront} | ||
| underlayColor={'#AAA'} | ||
| > | ||
| <View> | ||
| <Text>I am {data.item.text} in a SwipeListView</Text> | ||
| <Text> | ||
| I am {data.item.text} in a SwipeListView | ||
| </Text> | ||
| </View> | ||
| </TouchableHighlight> | ||
| </Animated.View> | ||
| )} | ||
| rightOpenValue={-375} | ||
| onSwipeValueChange={this.onSwipeValueChange} | ||
| /> | ||
| ``` | ||
| </Animated.View> | ||
| )} | ||
| renderHiddenItem={(data, rowMap) => ( | ||
| <View style={styles.rowBack}> | ||
| <Text>Left</Text> | ||
| <TouchableOpacity | ||
| style={[ | ||
| styles.backRightBtn, | ||
| styles.backRightBtnLeft, | ||
| ]} | ||
| onPress={() => | ||
| this.closeRow(rowMap, data.item.key) | ||
| } | ||
| > | ||
| <Text style={styles.backTextWhite}> | ||
| Close | ||
| </Text> | ||
| </TouchableOpacity> | ||
| <TouchableOpacity | ||
| style={[ | ||
| styles.backRightBtn, | ||
| styles.backRightBtnRight, | ||
| ]} | ||
| onPress={() => | ||
| this.deleteRow(rowMap, data.item.key) | ||
| } | ||
| > | ||
| <Animated.View | ||
| style={[ | ||
| styles.trash, | ||
| { | ||
| transform: [ | ||
| { | ||
| scale: this.rowTranslateAnimatedValues[ | ||
| data.item.key | ||
| ].interpolate({ | ||
| inputRange: [ | ||
| 45, | ||
| 90, | ||
| ], | ||
| outputRange: [0, 1], | ||
| extrapolate: | ||
| 'clamp', | ||
| }), | ||
| }, | ||
| ], | ||
| }, | ||
| ]} | ||
| > | ||
| <Image | ||
| source={require('../../assets/snack-icon.png')} | ||
| style={styles.trash} | ||
| /> | ||
| </Animated.View> | ||
| </TouchableOpacity> | ||
| </View> | ||
| )} | ||
| leftOpenValue={dimensions.width} | ||
| rightOpenValue={-dimensions.width} | ||
| previewRowKey={'0'} | ||
| previewOpenValue={-40} | ||
| previewOpenDelay={3000} | ||
| onRowDidOpen={this.onRowDidOpen} | ||
| onSwipeValueChange={this.onSwipeValueChange} | ||
| /> | ||
| ); | ||
| } | ||
| } | ||
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| export default DeleteSwipeListView; | ||
| ``` |