微信小程序使用map组件实现路线规划功能示例

本文实例讲述了微信小程序使用map组件实现路线规划功能。分享给大家供大家参考，具体如下：

效果图

实现原理

1. 通过map组件标记起始点和绘制路线图；
2. 通过高德地图API获取不同类型的路线坐标点，以及耗费时间和路程。

WXML

<view class="flex-style">
 <view class="flex-item {{status == 'car' ? 'active' : ''}}" data-status="car" bindtouchstart="goTo">驾车</view>
 <view class="flex-item {{status == 'walk' ? 'active' : ''}}" data-status="walk" bindtouchstart="goTo">步行</view>
 <view class="flex-item {{status == 'bus' ? 'active' : ''}}" data-status="bus" bindtouchstart="goTo">公交</view>
 <view class="flex-item {{status == 'ride' ? 'active' : ''}}" data-status="ride" bindtouchstart="goTo">骑行</view>
</view>
<view class="map-inputtips-input">
 <input bindinput="bindInput" placeholder="输入终点" focus="true" />
</view>
<view class="map-search-list {{isShow ? '' : 'map-hide'}}">
 <view bindtouchstart="bindSearch" wx:key="searchId" data-keywords="{{item.name}}" data-location="{{item.location}}" class="map-box" wx:for="{{tips}}">
  {{item.name}}
 </view>
</view>
<view class="map_box {{detailStatus ? 'active' : ''}}">
 <map id="navi_map" longitude="{{longitude}}" latitude="{{latitude}}" scale="14" include-points='{{points}}' markers="{{markers}}" polyline="{{polyline}}"></map>
</view>
<view class="text_box {{detailStatus ? '' : 'map-hide'}}">
 <view class="text">路程：{{distance}}米</view>
 <view class="text">耗时：{{cost}}分钟</view>
 <view class="detail_button" bindtouchstart="goDetail">详情</view>
</view>

WXSS

.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_box{
 position:absolute;
 top: calc(35px + 80rpx);
 bottom: 0px;
 left: 0px;
 right: 0px;
}
.map_box.active{bottom: 90px;}
#navi_map{
 width: 100%;
 height: 100%;
}
.text_box{
 position:absolute;
 height: 90px;
 bottom: 0px;
 left: 0px;
 right: 0px;
}
.text_box .text{
 margin: 15px;
 color: lightseagreen;
}
.detail_button{
 position:absolute;
 bottom: 30px;
 right: 10px;
 padding: 3px 5px;
 color: #fff;
 background: #0091ff;
 width:50px;
 text-align:center;
 border-radius:5px;
}
.map-inputtips-input{
 height: 80rpx;
 line-height: 80rpx;
 width: 100%;
 box-sizing: border-box;
 font-size: 30rpx;
 padding: 0 10px;
 background-color: #fff;
 position: fixed;
 top: 35px;
 left: 0;
 z-index: 1000;
 border-bottom:1px solid #c3c3c3;
}
.map-inputtips-input input{
 border: 1px solid #ddd;
 border-radius: 5px;
 height: 60rpx;
 line-height: 60rpx;
 width: 100%;
 box-sizing: border-box;
 padding: 0 5px;
 margin-top: 10rpx;
}
.map-box{
 margin: 0 10px;
 border-bottom:1px solid #c3c3c3;
 height: 80rpx;
 line-height: 80rpx;
}
.map-box:last-child{border: none;}
.map-search-list{
 position: fixed;
 top: calc(80rpx + 35px);
 left: 0;
 width: 100%;
 z-index: 1000;
 background-color: #fff;
}

JS

const app = getApp();
const amap = app.data.amap;
const key = app.data.key;
Page({
 data: {
  longitude: '',
  latitude: '',
  isShow: false,
  detailStatus: false,
  status: '',
  markers: [],
  points: [],
  distance: '',
  cost: '',
  city: '',
  tips: {},
  polyline: []
 },
 onLoad() {
  var _this = this;
  wx.getLocation({
   success: function (res) {
    if (res && res.longitude) {
     _this.setData({
      longitude: res.longitude,
      latitude: res.latitude,
      points: [{
       longitude: res.longitude,
       latitude: res.latitude
      }],
      markers: [{
       id: 0,
       longitude: res.longitude,
       latitude: res.latitude,
       iconPath: '../../src/images/navi_s.png',
       width: 32,
       height: 32
      }]
     })
    }
   }
  })
 },
 bindInput: function (e) {
  var _this = this;
  var keywords = e.detail.value;
  var myAmap = new amap.AMapWX({ key: key });
  myAmap.getInputtips({
   keywords: keywords,
   location: '',
   success: function (res) {
    if (res && res.tips) {
     var address = res.tips[0].district;
     _this.setData({
      isShow: true,
      city: address.substring(address.indexOf('省') + 1, address.indexOf('市')),
      tips: res.tips
     });
    }
   }
  })
 },
 bindSearch: function (e) {
  var keywords = e.target.dataset.keywords;
  var location = e.target.dataset.location;
  location = location.split(',');
  if (this.data.markers.length > 1 && this.data.points.length > 1){
   this.data.markers.pop();
   this.data.points.pop();
   this.setData({ polyline:[]});
  }
  var markers = this.data.markers;
  var points = this.data.points;
  markers.push({
   id: 0,
   longitude: location[0],
   latitude: location[1],
   iconPath: '../../src/images/navi_e.png',
   width: 32,
   height: 32
  });
  points.push({
   longitude: location[0],
   latitude: location[1]
  })
  this.setData({
   isShow: false,
   markers: markers,
   points: points
  })
 },
 goTo(e) {
  if (this.data.points.length < 2) {
   wx.showToast({ title: '请输入终点' })
   return;
  }
  var status = e.target.dataset.status;
  var myAmap = new amap.AMapWX({ key: key });
  switch (status) {
   case 'car':
    myAmap.getDrivingRoute(this.getDataObj('#4B0082'));
    break;
   case 'walk':
    myAmap.getWalkingRoute(this.getDataObj());
    break;
   case 'bus':
    myAmap.getTransitRoute(this.getBusData('#008B8B'));
    break;
   case 'ride':
    myAmap.getRidingRoute(this.getDataObj('#00FFFF'));
    break;
   default:
    return;
  }
  this.setData({
   detailStatus: true,
   status: status
  })
 },
 getDataObj(color) {
  var _this = this;
  var color = color || "#0091ff";
  return {
   origin: _this.data.points[0].longitude + ',' + _this.data.points[0].latitude,
   destination: _this.data.points[1].longitude + ',' + _this.data.points[1].latitude,
   success(data) {
    var points = [];
    if (!data.paths || !data.paths[0] || !data.paths[0].steps) {
     wx.showToast({ title: '失败！' });
     return;
    }
    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])
       })
      }
     }
    }
    _this.setData({
     distance: data.paths[0].distance,
     cost: parseInt(data.paths[0].duration / 60),
     polyline: [{
      points: points,
      color: color,
      width: 6
     }]
    });
   },
   fail(info) {
    wx.showToast({ title: '失败！' })
   }
  }
 },
 getBusData(color) {
  var _this = this;
  var color = color || "#0091ff";
  return {
   origin: _this.data.points[0].longitude + ',' + _this.data.points[0].latitude,
   destination: _this.data.points[1].longitude + ',' + _this.data.points[1].latitude,
   city: _this.data.city,
   success(data) {
    var points = [], cost = 0;
    if (data && data.transits) {
     var transits = data.transits;
     for (var i = 0; i < transits.length; i++) {
      cost += parseInt(transits[i].duration);
      var segments = transits[i].segments;
      for (var j = 0; j < segments.length; j++) {
       if (segments[j].bus.buslines[0] && segments[j].bus.buslines[0].polyline) {
        var steps = segments[j].bus.buslines[0].polyline.split(';');
        for (var k = 0; k < steps.length; k++) {
         var point = steps[k].split(',');
         points.push({
          longitude: point[0],
          latitude: point[1]
         })
         if (parseInt(point[0] * 100000) === parseInt(_this.data.points[1].longitude * 100000) && parseInt(point[1] * 100000) === parseInt(_this.data.points[1].latitude * 100000)){
          _this.setData({
           distance: data.distance,
           cost: parseInt(cost / 60),
           polyline: [{
            points: points,
            color: color,
            width: 6
           }]
          });
          return ;
         }
        }
       }
      }
     }
    }
   },
   fail(info) {
    wx.showToast({ title: '失败！' })
   }
  }
 }
})

实现步骤

1. 利用 input 输入终点地址关键字；
2. 通过关键字利用高德地图API（getInputtips）获取地址坐标列表；
3. 列表添加选中事件，获取具体的 location ，进行地图标记；
4. 选择路线类型（驾车，骑行等），通过高德地图对应的API获取规划坐标；
5. 绘制路线。
6. 注意：在返回的路线坐标数据格式，公交和其他三种方式的数据格式不同，需要单独进行处理（单独处理公交数据的方法： getBusData）。

希望本文所述对大家微信小程序开发有所帮助。