微信小程序-根据经纬度在地图定位标记

1. js

// pages/index/index.js
Page({
  data: {
    longitude: 113.324520,
    latitude: 23.099994,
    markers: [{
      id: 0,
      latitude: 23.099994,
      longitude: 113.324520,
      iconPath: '/resources/location.png',
      width: 30,
      height: 30
    }],
    cityList: [
      { name: '北京', longitude: 116.407526, latitude: 39.904030 },
      { name: '上海', longitude: 121.473701, latitude: 31.230416 },
      { name: '广州', longitude: 113.264394, latitude: 23.129107 },
      { name: '深圳', longitude: 114.057865, latitude: 22.543096 }
    ]
  },
  onLoad: function() {
    wx.getSetting({
      success: res => {
        if (!res.authSetting['scope.userLocation']) {
          wx.authorize({
            scope: 'scope.userLocation',
            success() {
              this.getLocation();
            },
            fail() {
              // 处理授权失败的情况
            }
          });
        } else {
          this.getLocation();
        }
      }
    });
  },
  getLocation: function() {
    let that = this;
    wx.getLocation({
      type: 'wgs84',
      success: function(res) {
        that.setData({
          longitude: res.longitude,
          latitude: res.latitude,
          markers: [{
            id: 0,
            latitude: res.latitude,
            longitude: res.longitude,
            iconPath: '/resources/location.png',
            width: 30,
            height: 30
          }]
        });
      }
    });
  },
  changeLocation: function(e) {
    let index = e.currentTarget.dataset.index;
    let city = this.data.cityList[index];
    this.setData({
      longitude: city.longitude,
      latitude: city.latitude,
      markers: [{
        id: 1,
        latitude: city.latitude,
        longitude: city.longitude,
        iconPath: '/resources/location.png',
        width: 30,
        height: 30
      }]
    });
  }
});

2.json

{
  "usingComponents": {
    "navigation-bar": "/components/navigation-bar/navigation-bar"
  } 
}

3. wxml

<!-- pages/index/index.wxml -->
<view class="container">
  <map id="myMap" longitude="{{longitude}}" latitude="{{latitude}}" scale="14" markers="{{markers}}" style="width: 100%; height: 662rpx; display: block; box-sizing: border-box; left: 0rpx; top: 0rpx"></map>
  <view class="city-names">
    <button wx:for="{{cityList}}" wx:key="index" bindtap="changeLocation" data-index="{{index}}">{{item.name}}</button>
  </view>
</view>

4. wxss

/* pages/index/index.wxss */
.container {
  display: flex;
  flex-direction: column;
  height: 100vh; /* 使用视口高度单位 */
}

#myMap {
  flex: 1; /* 地图占据剩余空间 */
}

.city-names {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  background-color: #fff;
}

.city-names button {
  padding: 10px;
  border-bottom: 1px solid #eee;
}

5 . app.json

{
  "pages": [
    "pages/index/index"
  ],
  "window": {
    "navigationBarTextStyle": "black",
    "navigationStyle": "custom"
  },
  "style": "v2",
  "renderer": "webview",
  "componentFramework": "glass-easel",
  "sitemapLocation": "sitemap.json",
  "lazyCodeLoading": "requiredComponents",
  "permission": {
    "scope.userLocation": {"desc": "你的位置信息将用于小程序定位功能，以便为你提供更准确的服务"}
  } 
}