微信小程序使用高德地图

微信小程序—-高德地图开发应用（获取key）

1.利用高德开发平台创建应用

http://lbs.amap.com/dev/index

2、点击创建新应用进入创建模态框

3.添加新Key

在创建的应用上点击”添加新Key”按钮。

得到KEY

微信小程序—-map路线规划

进入页面直接定位到当前位置，输入目的地！

案例代码：

WXML：

<view class="tui-map">
  <map id="map" longitude="{{currentLo}}" latitude="{{currentLa}}" scale="{{scale}}" markers="{{markers}}" polyline="{{polyline}}"  include-points="{{includePoints}}" show-location style="width: 100%; height: 100%;"></map>
</view>
<view class="tui-map-search" bindtap="getAddress">
   <icon size='20' type='search' class='tui-map-search-icon'></icon> 
  <input class="tui-map-input" placeholder="搜索" focus="{{focusStatus}}"></input>
</view>
<view class="tui-search-bottom {{show ? '' : 'tui-hide'}}">
  <view class="page-group">
    <view class="page-nav-list {{statusType == 'car' ? 'active' : ''}}" data-type="car" bindtap="goTo">驾车</view>
    <view class="page-nav-list {{statusType == 'walk' ? 'active' : ''}}" data-type="walk" bindtap="goTo">步行</view>
    <view class="page-nav-list {{statusType == 'ride' ? 'active' : ''}}" data-type="ride" bindtap="goTo">骑行</view>
  </view>
  <view class="tui-warn">
    {{distance}}米
  </view>
  <view class="tui-warn">
    {{duration}}分钟
  </view>
</view>

JS

var amapFile = require('../../src/js/amap-wx.js');
Page({
  data: {
    key: 'c290b7e016c85e8f279b2f80018c6fbf',
    show: false,
    currentLo : null,
    currentLa : null,
    newCurrentLo : null,
    newCurrentLa : null,
    distance : 0,
    duration : 0,
    markers : null,
    scale: 16,
    polyline: null,
    statusType: 'car',
    includePoints:[]
  },
  onLoad(){
    var _this = this;
    wx.getLocation({
      success(res){
        _this.setData({ 
          currentLo: res.longitude, 
          currentLa: res.latitude,
          includePoints: [{
            longitude: res.longitude,
            latitude: res.latitude
          }],
          markers: [{
            id: 0,
            longitude: res.longitude,
            latitude: res.latitude,
            title: res.address,
            iconPath: '../../src/images/navi_s.png',
            width: 32,
            height: 32
          }]
        });
      }
    })
  },
  getAddress(e){
    var _this = this;
    wx.chooseLocation({
      success(res){
        var markers = _this.data.markers;
        markers.push({
          id: 0,
          longitude: res.longitude,
          latitude: res.latitude,
          title: res.address,
          iconPath: '../../src/images/navi_e.png',
          width: 32,
          height: 32
        });

        var points = _this.data.includePoints;
        points.push({
          longitude: res.longitude,
          latitude: res.latitude
        });
        _this.setData({
          newCurrentLo: res.longitude,
          newCurrentLa: res.latitude,
          includePoints: points,
          markers: markers,
          show:true
        });
        _this.getPolyline(_this.data.statusType);
      }
    });
  },
  drawPolyline(self,color){
    return {
      origin: this.data.currentLo + ',' + this.data.currentLa,
      destination: this.data.newCurrentLo + ',' + this.data.newCurrentLa,
      success(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])
              })
            }
          }
        }
        self.setData({
          distance: data.paths[0].distance,
          duration: parseInt(data.paths[0].duration/60),
          polyline: [{
            points: points,
            color: color,
            width: 6,
            arrowLine: true
          }]
        });
      }
    }
  },
  getPolyline(_type){
    var amap = new amapFile.AMapWX({ key: this.data.key });
    var self = this;
    switch (_type){
      case 'car':
        amap.getDrivingRoute(this.drawPolyline(this,"#0091ff"));
        break;
      case 'walk':
        amap.getWalkingRoute(this.drawPolyline(this, "#1afa29"));
        break;
      case 'ride':
        amap.getRidingRoute(this.drawPolyline(this, "#1296db"));
        break;
      default:
        return false;
    }
  },
  goTo(e){
    var _type = e.currentTarget.dataset.type;
    this.setData({statusType : _type});
    this.getPolyline(_type);
  }
})

WXSS

.tui-map-search{
  width: 100%;
  height: 80rpx;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000000;
  box-sizing: border-box;
  padding: 5rpx 10px;
  background-color: #fff;
  line-height: 70rpx;
}
.tui-map-input{
  height: 70rpx;
  line-height: 70rpx;
  font-size: 30rpx;
  margin-left: 25px;
}
.tui-map-search-icon{
  position: absolute;
  top: calc(50% - 10px);
  left: 10px;
}
.tui-map{
  width: 100%;
  height: calc(100% - 80rpx);
  position: fixed;
  bottom: 0;
  left: 0;
}
.tui-map-direction{
  width: 32px;
  height: 32px;
  position: fixed;
  right: 10px;
  bottom: 80px;
  z-index: 100000;
}

.page-group{
  display: table;
  width: 100%;
  table-layout: fixed;
  background-color: #fff;
}
.page-nav-list{
  padding:20rpx 0 ;
  font-size: 30rpx;
  display: table-cell;
  text-align: center;
  width: 100%;
  color: #222;
}
.page-nav-list.active{color:blue;}
.tui-warn{
  height: 50px;
  line-height: 50px;
  padding-left: 10px;
  color: lightseagreen;
  font-size: 30rpx;
}
.tui-search-bottom{
  height: 150px;
  background: #fff;
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 1000;
}

注意

在实例化 AMapWX 对象前，必须引入amap-wx.js，amap-wx.js下载
网址：http://lbs.amap.com/api/wx/download