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> <view data-status="car" bindtouchstart="goTo">驾车</view> <view data-status="walk" bindtouchstart="goTo">步行</view> <view data-status="bus" bindtouchstart="goTo">公交</view> <view data-status="ride" bindtouchstart="goTo">骑行</view> </view> <view> <input bindinput="bindInput" placeholder="输入终点" focus="true" /> </view> <view> <view bindtouchstart="bindSearch" wx:key="searchId" data-keywords="{{item.name}}" data-location="{{item.location}}" wx:for="{{tips}}"> {{item.name}} </view> </view> <view> <map longitude="{{longitude}}" latitude="{{latitude}}" scale="14" include-points='{{points}}' markers="{{markers}}" polyline="{{polyline}}"></map> </view> <view> <view>路程：{{distance}}米</view> <view>耗时：{{cost}}分钟</view> <view 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