React Native实现地址挑选器功能(2)

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'
 },