WeChat applet Amap multi-point route planning process example detailed explanation

var config = {
 key:'Please fill in the key you applied for here'
}
module.exports.Config = config;

var amapFile = require('../../libs/amap-wx.js');
var config = require('../../libs/config.js');

<scroll-view scroll-x class="bg-white nav text-center">
 <view class="cu-item {{index==TabCur?'text-blue cur':''}}" wx:for="{{4}}" wx:key bindtap="tabSelect" data-id="{{index}}">
 {{method[index]}}
 </view>
</scroll-view>
<view class="map">
 <view bindtap='getFormAddress'>
 <view class="cu-form-group">
 <view class="title">Departure Place</view>
 <input placeholder="Departure place" type="text" name="" bindinput="" value='{{markers[0].name}}' />
 </view>
 </view>
 <view bindtap='getToAddress'>
 <view class="cu-form-group">
 <view class="title">Destination</view>
 <input placeholder="destination" type="text" name="" bindinput="" value='{{markers[1].name}}' />
 </view>
 </view>
​
 <view class="flex" wx:if="{{TabCur==0||TabCur==1}}">
 <button class="cu-btn bg-blue lg" bindtap = 'getSure'>OK</button>
 </view>
​
</view>
<view>
 <view class="map_box" wx:if="{{TabCur==0}}">
 <map id="navi_map" longitude="{{markers[0].longitude}}" latitude="{{markers[0].latitude}}" scale="12" markers="{{markers}}" polyline="{{polyline}}"></map>
 </view>
 <view class="text_box" wx:if='{{TabCur==0}}'>
 <view class="text">{{distance}}</view>
 <view class="text">{{cost}}</view>
 <view class="detail_button" bindtouchstart="goDetail" wx:if="{{state==1}}">Details</view>
 </view>
</view>

var amapFile = require('../../libs/amap-wx.js');
var config = require('../../libs/config.js');
const app = getApp()
Page({ 
 /**
 * Initial data of the page */
 data: {
 markers: [{
 iconPath: "../../img/mapicon_navi_s.png",
 id: 0,
 latitude: 39.989643,
 longitude: 116.481028,
 width: 23,
 height: 33
 },{
 iconPath: "../../img/mapicon_navi_e.png",
 id: 0,
 latitude: 39.90816,
 longitude: 116.434446,
 width: 24,
 height: 34
 }],
 distance: '',
 cost: '',
 state: 0,
 method:['drive', 'bus', 'bike', 'walk'],
 index:0,
 TabCur:0,
 polyline: [],
 transits: []
 }, 
 /**
 * Life cycle function--listen for page loading*/
 onLoad: function(options) {
 var that = this;
 wx.showLoading({
 title: "Positioning",
 mask: true
 })
 wx.getLocation({
 type: 'gcj02',
 altitude: true, //High-precision positioning success: function(res) {
 console.info(res);
 var latitude = res.latitude
 var longitude = res.longitude
 var speed = res.speed
 var accuracy = res.accuracy
 that.setData({
 markers: [{
 name: 'Current location',
 latitude: latitude,
 longitude: longitude
 }, {
 name: 'Where are you going?',
 latitude: '',
 longitude: ''
 }]
 })
 },
 fail: function() {
 wx.showToast({
 title: "Positioning failed",
 icon: "none"
 })
 }, 
 complete: function() {
 wx.hideLoading()
 }
 })
 },
 //Selector change function tabSelect(e) {
 this.setData({
 TabCur: e.currentTarget.dataset.id,
 scrollLeft: (e.currentTarget.dataset.id - 1) * 60
 })
},
//Get the departure placegetFormAddress: function() {
 var that = this;
 wx.chooseLocation({
 success: function(res) {
 var name = res.name
 var address = res.address
 var latitude = res.latitude
 var longitude = res.longitude
 var marksName = "markers[" + 0 + "].name";
 var marksLatitude = "markers[" + 0 + "].latitude";
 var markslongitude = "markers[" + 0 + "].longitude";
 var marksiconPath = "markers[" + 0 + "].iconPath";
 that.setData({
 [markesName]: name,
 [markesLatitude]: latitude,
 [markeslongitude]: longitude,
 [markesiconPath]: "../../img/mapicon_navi_s.png"
 })
 },
 fail: function() {
 wx.showToast({
 title: 'Positioning failed',
 icon: "none"
 })
 },
 complete: function() {
 //Hide the positioning information progress wx.hideLoading()
 }
 })
 }, 
//Get the destination getToAddress: function() {
 var that = this;
 wx.chooseLocation({
 success: function(res) {
 console.log(res);
 var name = res.name
 var address = res.address
 var latitude = res.latitude
 var longitude = res.longitude
 var marksName = "markers[" + 1 + "].name";
 var marksLatitude = "markers[" + 1 + "].latitude";
 var markslongitude = "markers[" + 1 + "].longitude";
 var marksiconPath = "markers[" + 1 + "].iconPath";
 that.setData({
 [markesName]: name,
 [markesLatitude]: latitude,
 [markeslongitude]: longitude,
 [markesiconPath]: "../../img/mapicon_navi_e.png"
 })
 },
 fail: function() {
 wx.showToast({
 title: 'Positioning failed',
 icon: "none"
 })
 },
 complete: function() {
 //Hide the positioning information progress wx.hideLoading()
 }
 })
 },
 /**
 * Sure*/
 getSure: function() {
 var that = this;
 var origin = that.data.markers[0].longitude + ',' + that.data.markers[0].latitude; //Departure point var destination = that.data.markers[1].longitude + ',' + that.data.markers[1].latitude; //Destination var TabCur=this.data.TabCur;
app.origin = origin;
app.destination = destination;
var key = config.Config.key;
var myAmapFun = new amapFile.AMapWX({
 key: key
 });
 if(TabCur==0){
  myAmapFun.getDrivingRoute({//Get driving route origin: origin,
  destination: destination,
  success: function(data) {
  var points = [];
  if (data.paths && data.paths[0] && data.paths[0].steps) {
  var steps = data.paths[0].steps;
  for (var i = 0; i < steps.length; i++) {
  var poLen = steps[i].polyline.split(';');
  for (var j = 0; j < poLen.length; j++) {
  points.push({
  longitude: parseFloat(poLen[j].split(',')[0]),
  latitude: parseFloat(poLen[j].split(',')[1])
  })
  }
  }
  }
  that.setData({//Draw the route on the map state: 1,
  polyline: [{
  points: points,
  color: "#0091ff",
  width: 6
  }]
  });
  if (data.paths[0] && data.paths[0].distance) {
  that.setData({
  distance: data.paths[0].distance + 'meters'
  });
  }
  if (data.taxi_cost) {
  that.setData({
  cost: 'Taxi' + parseInt(data.taxi_cost) + 'yuan'
  });
  }
  }
 })
 }
 },
/**
 * Details page */
goDetail: function() {
  var TabCur = this.data.TabCur;
  if(TabCur==0){
  wx.navigateTo({
  url: '../detail/detail'
  })
 }
 },
})

.flex-style{
 display: -webkit-box;
 display: -webkit-flex;
 display: flex;
 }
 .flex-item{
 height: 35px;
 line-height: 35px;
 text-align: center;
 -webkit-box-flex: 1;
 -webkit-flex: 1;
 flex: 1
 }
 .flex-item.active{
 color:#0091ff;
 }
 .map_title{
 position:absolute;
 top: 10px;
 bottom: 110px;
 left: 0px;
 right: 0px;
 }
 .map_btn{
 position:absolute;
 top: 150px;
 bottom: 220px;
 left: 0px;
 right: 0px;
 }
 .map_box{
 position:absolute;
 top: 187px;
 bottom: 70px;
 left: 0px;
 right: 0px;
 }
 #navi_map{
 width: 100%;
 height: 100%;
 }
 .text_box{
 
 position:absolute;
 height: 70px;
 bottom: 0px;
 left: 0px;
 right: 0px;
 }
 .text_box .text{
 margin: 15px;
 }

<view class="text_box" wx:for="{{steps}}" wx:for-item="i" wx:key="j">
 {{i.instruction}}
</view>

var amapFile = require('../../libs/amap-wx.js');
var config = require('../../libs/config.js');
const app = getApp()
Page({
 data: {
 steps: {}
 },
 onLoad: function () {
 var that = this;
 var key = config.Config.key;
 var myAmapFun = new amapFile.AMapWX({ key: key });
 myAmapFun.getDrivingRoute({
 origin: app.origin,
 destination: app.destination,
 success: function (data) {
 if (data.paths && data.paths[0] && data.paths[0].steps) {
 that.setData({
 steps: data.paths[0].steps
 });
 }
 },
 fail: function (info) {
 }
 })
 }
})

Page{

}
.text_box{
 margin: 0 15px;
 padding: 15px 0;
 border-bottom: 1px solid #c3c3c3;
 font-size: 13px;
}
.text_box .text_item{display:inline-block;line-height: 8px;}