微信小程序之地址联动

<view class="consignee"> 
<!-- consignee 收件人 -->
  <text>收件人: </text><input type=‘text‘ placeholder=‘请输入姓名‘></input>
</view>
<!-- 手机号 -->
<view class="consignee"> 

  <text>手机号: </text><input type=‘text‘ placeholder=‘请输入手机号‘></input>
</view>
<!--所在地区  -->
<view bindtap=‘selectDistrict‘ class=‘consignee‘>
  <text >所在地区</text>
  <text>{{areaInfo}}</text>
</view>
<!-- 详细地址 -->
<view class=‘consignee‘>
  <text>详细地址</text>
  <input type=‘text‘ placeholder=‘请输入详细地址‘></input>
</view>
<!-- 完成 -->
<button class=‘btn‘>完成</button>

<view class="picker-view" animation="{{animationAddressMenu}}" style="visibility:{{addressMenuIsShow ? ‘visible‘:‘hidden‘}}">
  <view style="height:10% ;width:95%;margin-top:10rpx">
    <text catchtap="cityCancel">取消</text>
    <text style="float: right" catchtap="citySure">确定</text>
  </view>
  <!--"可以显示默认的城市，使用后级联选择城市反应很慢就不使用了-->
  <picker-view style="width: 100%; height: 300px;" bindchange="cityChange" value="{{value}}" wx:key="">
    <picker-view-column>
      <view wx:for="{{provinces}}" class="picker-item" wx:key="index">
        {{item.name}}</view>
    </picker-view-column>
    <picker-view-column>
      <view wx:for="{{citys}}" class="picker-item" wx:key="">
        {{item.name}}</view>
    </picker-view-column>
    <picker-view-column>
      <view wx:for="{{areas}}" class="picker-item" wx:key="">
        {{item.name}}</view>
    </picker-view-column>
  </picker-view>
</view>

<!--"可以显示默认的城市，使用后级联选择城市反应很慢就不使用了-->
  <picker-view style="width: 100%; height: 300px;" bindchange="cityChange" value="{{value}}" wx:key="">
    <picker-view-column>
      <view wx:for="{{provinces}}" class="picker-item" wx:key="index">
        {{item.name}}</view>
    </picker-view-column>
    <picker-view-column>
      <view wx:for="{{citys}}" class="picker-item" wx:key="">
        {{item.name}}</view>
    </picker-view-column>
    <picker-view-column>
      <view wx:for="{{areas}}" class="picker-item" wx:key="">
        {{item.name}}</view>
    </picker-view-column>
  </picker-view>

// pages/address/newAdd.js
let address = require(‘../../utils/city.js‘)
Page({

  /**
   * 页面的初始数据
   */
  data: {
    animationAddressMenu: {},
    addressMenuIsShow: false,
    value: [0, 0, 0],
    provinces: [],
    citys: [],
    areas: [],
    areaInfo: ‘‘ 
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    var id = address.provinces[0].id
    this.setData({
      provinces: address.provinces,
      citys: address.citys[id],
      areas: address.areas[address.citys[id][0].id],
    })
  
  },
  // 点击所在地区弹出选择框
  selectDistrict: function (e) {
    var that = this
    // 如果已经显示，不在执行显示动画
    if (that.data.addressMenuIsShow) {
      return
    }
    // 执行显示动画
    that.startAddressAnimation(true)
  },
  // 执行动画
  startAddressAnimation: function (isShow) {
    console.log(isShow)
    var that = this
    // if (isShow) {
    //   // vh是用来表示尺寸的单位，高度全屏是100vh
    //   that.animation.translateY(0 + ‘vh‘).step()
    // } else {
    //   that.animation.translateY(40 + ‘vh‘).step()
    // }
    that.setData({
      //animationAddressMenu: that.animation.export(),
      addressMenuIsShow: isShow,
    })
  },
  // 点击地区选择取消按钮
  cityCancel: function (e) {
    this.startAddressAnimation(false)
  },
  // 点击地区选择确定按钮
  citySure: function (e) {
    var that = this
    var city = that.data.city
    var value = that.data.value
    that.startAddressAnimation(false)
    // 将选择的城市信息显示到输入框
    var areaInfo = that.data.provinces[value[0]].name + ‘,‘ + that.data.citys[value[1]].name + ‘,‘ + that.data.areas[value[2]].name
    that.setData({
      areaInfo: areaInfo,
    })
  },
  // 点击蒙版时取消组件的显示
  hideCitySelected: function (e) {
    console.log(e)
    this.startAddressAnimation(false)
  },
  // 处理省市县联动逻辑
  cityChange: function (e) {
    console.log(e)
    var value = e.detail.value
    var provinces = this.data.provinces
    var citys = this.data.citys
    var areas = this.data.areas
    var provinceNum = value[0]
    var cityNum = value[1]
    var countyNum = value[2]
    // 如果省份选择项和之前不一样，表示滑动了省份，此时市默认是省的第一组数据，
    if (this.data.value[0] != provinceNum) {
      var id = provinces[provinceNum].id
      this.setData({
        value: [provinceNum, 0, 0],
        citys: address.citys[id],
        areas: address.areas[address.citys[id][0].id],
      })
    } else if (this.data.value[1] != cityNum) {
      // 滑动选择了第二项数据，即市，此时区显示省市对应的第一组数据
      var id = citys[cityNum].id
      this.setData({
        value: [provinceNum, cityNum, 0],
        areas: address.areas[citys[cityNum].id],
      })
    } else {
      // 滑动选择了区
      this.setData({
        value: [provinceNum, cityNum, countyNum]
      })
    }
    console.log(this.data)
  },
  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
  
  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
  
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {
  
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
  
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
  
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
  
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {
  
  }
})