Dieses Mal bringe ich Ihnen React Native, um die Adressauswahlfunktion zu implementieren. Was sind die Vorsichtsmaßnahmen für die Implementierung der Adressauswahlfunktion in React Native? Das Folgende ist ein praktischer Fall.
import React, { Component, PropTypes } from 'react'; import { ViewPropTypes, StyleSheet, View, TouchableOpacity, TouchableNativeFeedback, Platform, Animated, Text } from 'react-native'; export default class SelectCityTabBar extends Component { //属性声名 static propTypes = { goToPage: PropTypes.func, activeTab: PropTypes.number, tabs: PropTypes.array, backgroundColor: PropTypes.string, activeTextColor: PropTypes.string, inactiveTextColor: PropTypes.string, textStyle: Text.propTypes.style, tabStyle: ViewPropTypes.style, renderTab: PropTypes.func, underlineStyle: ViewPropTypes.style, }; //默认属性 static defaultProps = { activeTextColor: '#FA3D4F', inactiveTextColor: 'black', backgroundColor: null, } renderTab(name, page, isTabActive, onPressHandler) { const { activeTextColor, inactiveTextColor, textStyle, } = this.props; const textColor = isTabActive ? activeTextColor : inactiveTextColor; const fontWeight = isTabActive ? 'bold' : 'normal'; const viewStyle = isTabActive ? [styles.tab, { borderBottomWidth: Constant.sizepiderLarge, borderColor: Constant.colorPrimary }] : styles.tab; if (Platform.OS !== 'ios') { return <TouchableNativeFeedback delayPressIn={0} background={TouchableNativeFeedback.SelectableBackground()} key={name + page} accessible={true} accessibilityLabel={name} accessibilityTraits='button' onPress={() => onPressHandler(page)} > <View style={viewStyle}> <Text style={[{ color: textColor, fontWeight, }, textStyle,]}> {name} </Text> </View> </TouchableNativeFeedback> } return <TouchableOpacity key={name + page} accessible={true} accessibilityLabel={name} accessibilityTraits='button' onPress={() => onPressHandler(page)} > <View style={viewStyle}> <Text style={[{ color: textColor, fontWeight, }, textStyle,]}> {name} </Text> </View> </TouchableOpacity>; } render() { return ( <View style={{ flexDirection: 'row', borderBottomWidth: Constant.sizepiderNormal, borderColor: Constant.colorpider }}> {this.props.tabs.map((name, page) => { const isTabActive = this.props.activeTab === page; const renderTab = this.props.renderTab || this.renderTab; return this.renderTab(name, page, isTabActive, this.props.goToPage); })} </View> ); } } const styles = StyleSheet.create({ tab: { alignItems: 'center', justifyContent: 'center', paddingBottom: 10, marginLeft: 10, }, tabs: { height: 50, flexDirection: 'row', justifyContent: 'space-around', borderWidth: 1, borderTopWidth: 0, borderLeftWidth: 0, borderRightWidth: 0, borderColor: '#ccc', }, });
npm-React-Native-Scrollable-Tab-View-Komponente
import React, { Component } from 'react'; import { StyleSheet, View, ScrollView, Dimensions, TouchableOpacity, InteractionManager, Platform, UIManager, Text } from 'react-native'; import ScrollableTabView from 'react-native-scrollable-tab-view'; import SelectCityTabBar from './SelectCityTabBar' import AREA_JSON from '../../util/area.json'; const { height, width } = Dimensions.get('window'); export default class AddressSelect extends Component { static defaultProps = { commitFun: function (value) { console.log(value); }, dissmissFun: function () { }, lastAddress: null, }; constructor(props) { super(props); if (Platform.OS === 'android') { UIManager.setLayoutAnimationEnabledExperimental(true) } const { lastAddress } = props; let selectAddress = this.initAddress(lastAddress); this.state = { selectAddress } } initAddress(lastAddress) { let selectAddress = [ { value: null, label: null, children: AREA_JSON, }, { value: null, label: null, children: null, }, { value: null, label: null, children: null, }]; let array = null; function fun(array, value) { for (let item of array) { if (item.value + '' === value + '') { return item; } } } try { selectAddress = selectAddress.map((item, index) => { let result = fun(array ? array : AREA_JSON, lastAddress[index].value); if (result.children) { array = result.children; } return result; }); } catch (e) { console.log('-----e-', e); } return selectAddress } /** * 列表行 * @param item * @param i * @returns {XML} */ renderListItem(item, i) { let itemStyle = styles.itemStyle; let textStyle = styles.itemText; let { selectAddress } = this.state; if (item.label === selectAddress[i].label) { itemStyle = [itemStyle]; textStyle = [textStyle, { color: 'red' }] } return ( <TouchableOpacity style={itemStyle} key={i + item.label} onPress={() => { this.pressItem(item, i) }} > <Text style={textStyle}>{item.label}</Text> </TouchableOpacity> ) } /** * 点击列表事件 * @param item 选中数据 * @param i 选中行数 */ pressItem(item, i) { let { selectAddress } = this.state; const initObj = { value: null, label: null, children: null, } let tempIndex = 0; if (i === 0) { selectAddress[0] = item; selectAddress[1] = initObj; selectAddress[2] = initObj; tempIndex = 1 } else if (i === 1) { selectAddress[1] = item; selectAddress[2] = initObj; tempIndex = 2 } else { selectAddress[2].value = item.value; selectAddress[2].label = item.label; tempIndex = 2 let address = [ { label: selectAddress[0].label, value: selectAddress[0].value }, { label: selectAddress[1].label, value: selectAddress[1].value }, { label: selectAddress[2].label, value: selectAddress[2].value } ] this.props.commitFun && this.props.commitFun(address); this.props.dissmissFun && this.props.dissmissFun(); return null; } this.setState({ selectAddress }); InteractionManager.runAfterInteractions(() => { this.tabView.goToPage(tempIndex) }) } render() { const { selectAddress } = this.state; return ( <View style={styles.container}> <View style={{ width: width, height: 40, flexDirection: 'row', justifyContent: 'center', alignItems: 'center', }}> <Text>所在地区</Text> </View> <ScrollableTabView ref={(tabView) => { this.tabView = tabView; }} renderTabBar={() => <SelectCityTabBar />} > {selectAddress.map((obj, i) => { let array = (i === 0) ? AREA_JSON : selectAddress[i - 1].children; if (array) { return ( <ScrollView key={i} tabLabel={obj.label || '请选择'} style={styles.scrollStyleList} > {array && array.map((obj2, j) => { return this.renderListItem(obj2, i) })} </ScrollView> ) } })} </ScrollableTabView> </View> ); } } const styles = StyleSheet.create({ container: { height: height * 0.6, backgroundColor: '#F5FCFF', }, scrollStyleList: { width: width, marginBottom: Constant.sizeMarginDefault, marginTop: Constant.sizeMarginDefault, }, itemStyle: { marginTop: 5, width: width, height: 35, marginLeft: Constant.sizeMarginDefault, justifyContent: 'center' }, itemText: { fontSize: 15, color: '#333333' },
Anwendung:
import React, {Component} from 'react'; import { StyleSheet, View, TouchableOpacity, Alert, ScrollView, ART, TouchableHighlight, ListView, Dimensions, Text } from 'react-native'; import {ReactNavComponent, Widget} from 'rn-yunxi'; import AddressSelect from '../../app-widget/address-select/index' export default class extends React.Component { render() { return ( <TouchableOpacity style={{flex:1, justifyContent:'center', alignItems:'center'}} onPress={() => this.openAddressSelect()}> <Text >地址选择</Text> </TouchableOpacity> ); } openAddressSelect() { Widget.Popup.show( // 这边使用自己封装的modal嵌套地址选择器 <AddressSelect commitFun={(area) => this.onSelectArea(area)} dissmissFun={() => Widget.Popup.hide()} />, { animationType: 'slide-up', backgroundColor: '#00000000', onMaskClose: () => { Widget.Popup.hide() } }) } onSelectArea = (area) => { Log(area) } };
DatentypFormat
[ { "value": "110000000000", "children": [ { "value": "110100000000", "children": [ { "value": "110101000000", "label": "东城区" }, { "value": "110102000000", "label": "西城区" }, { "value": "110105000000", "label": "朝阳区" }, { "value": "110106000000", "label": "丰台区" }, { "value": "110107000000", "label": "石景山区" }, { "value": "110108000000", "label": "海淀区" }, { "value": "110109000000", "label": "门头沟区" }, { "value": "110111000000", "label": "房山区" }, { "value": "110112000000", "label": "通州区" }, { "value": "110113000000", "label": "顺义区" }, { "value": "110114000000", "label": "昌平区" }, { "value": "110115000000", "label": "大兴区" }, { "value": "110116000000", "label": "怀柔区" }, { "value": "110117000000", "label": "平谷区" }, { "value": "110118000000", "label": "密云区" }, { "value": "110119000000", "label": "延庆区" } ], "label": "北京市" } ], "label": "北京市" } ]
Ich glaube, dass Sie die Methode beherrschen, nachdem Sie den Fall in diesem Artikel gelesen haben. Weitere spannende Informationen finden Sie in anderen verwandten Artikeln auf der chinesischen PHP-Website !
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