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244 lines
5.1 KiB
Markdown
244 lines
5.1 KiB
Markdown
# uni.getLocation - 获取位置示例
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## 官方文档
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参考官方文档:https://uniapp.dcloud.net.cn/api/location/location.html#getlocation
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## 概述
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`uni.getLocation` 用于获取当前地理位置。
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## 基础用法
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```javascript
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uni.getLocation({
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type: 'wgs84',
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success: (res) => {
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console.log('当前位置', res.latitude, res.longitude)
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}
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})
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```
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## 完整示例
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### 示例 1: 获取当前位置
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```javascript
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uni.getLocation({
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type: 'wgs84',
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success: (res) => {
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console.log('纬度', res.latitude)
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console.log('经度', res.longitude)
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console.log('速度', res.speed)
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console.log('精度', res.accuracy)
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},
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fail: (err) => {
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console.error('获取位置失败', err)
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}
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})
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```
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### 示例 2: 高精度定位
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```javascript
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uni.getLocation({
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type: 'gcj02',
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altitude: true,
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geocode: true,
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success: (res) => {
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console.log('位置信息', res)
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// res.address 包含地址信息(需要 geocode: true)
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}
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})
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```
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### 示例 3: 在页面中使用
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```vue
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<template>
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<view class="container">
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<button @click="getCurrentLocation">获取当前位置</button>
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<view v-if="location" class="location-info">
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<text>纬度:{{ location.latitude }}</text>
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<text>经度:{{ location.longitude }}</text>
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<text>地址:{{ location.address || '未获取' }}</text>
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</view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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location: null
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}
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},
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methods: {
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getCurrentLocation() {
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uni.showLoading({
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title: '定位中...'
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})
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uni.getLocation({
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type: 'gcj02',
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geocode: true,
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success: (res) => {
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this.location = res
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uni.hideLoading()
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uni.showToast({
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title: '定位成功',
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icon: 'success'
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})
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},
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fail: (err) => {
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uni.hideLoading()
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uni.showToast({
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title: '定位失败',
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icon: 'none'
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})
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console.error('定位失败', err)
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}
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})
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}
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}
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}
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</script>
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```
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### 示例 4: 检查定位权限
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```javascript
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// 先检查定位权限
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uni.getSetting({
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success: (res) => {
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if (res.authSetting['scope.userLocation']) {
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// 已授权,直接获取位置
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uni.getLocation({
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type: 'gcj02',
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success: (res) => {
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console.log('位置', res)
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}
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})
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} else {
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// 未授权,请求授权
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uni.authorize({
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scope: 'scope.userLocation',
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success: () => {
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uni.getLocation({
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type: 'gcj02',
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success: (res) => {
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console.log('位置', res)
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}
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})
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},
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fail: () => {
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uni.showModal({
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title: '提示',
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content: '需要定位权限才能使用此功能',
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showCancel: false
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})
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}
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})
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}
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}
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})
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```
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### 示例 5: 在地图上显示位置
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```vue
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<template>
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<view class="container">
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<button @click="getLocationAndShow">获取位置并显示</button>
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<map
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v-if="location"
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:latitude="location.latitude"
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:longitude="location.longitude"
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:markers="markers"
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class="map"
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></map>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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location: null,
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markers: []
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}
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},
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methods: {
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getLocationAndShow() {
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uni.getLocation({
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type: 'gcj02',
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success: (res) => {
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this.location = res
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this.markers = [{
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id: 1,
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latitude: res.latitude,
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longitude: res.longitude,
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title: '我的位置'
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}]
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}
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})
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}
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}
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}
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</script>
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<style>
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.map {
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width: 100%;
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height: 500px;
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margin-top: 20px;
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}
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</style>
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```
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## 参数说明
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| 参数名 | 类型 | 必填 | 说明 |
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|--------|------|------|------|
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| type | String | 否 | 坐标类型,可选值:wgs84、gcj02 |
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| altitude | Boolean | 否 | 是否返回高度信息 |
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| geocode | Boolean | 否 | 是否解析地址信息 |
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## 返回值
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| 参数名 | 类型 | 说明 |
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|--------|------|------|
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| latitude | Number | 纬度 |
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| longitude | Number | 经度 |
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| speed | Number | 速度 |
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| accuracy | Number | 位置的精确度 |
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| altitude | Number | 高度(需要 altitude: true) |
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| address | Object | 地址信息(需要 geocode: true) |
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## 平台兼容性
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| 平台 | 支持情况 |
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|------|---------|
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| H5 | ✅(需要 HTTPS) |
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| 微信小程序 | ✅ |
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| 支付宝小程序 | ✅ |
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| 百度小程序 | ✅ |
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| 字节跳动小程序 | ✅ |
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| QQ 小程序 | ✅ |
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| 快手小程序 | ✅ |
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| App | ✅ |
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| 快应用 | ✅ |
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## 注意事项
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1. 需要用户授权定位权限
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2. H5 平台需要 HTTPS 协议
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3. `type` 为 `gcj02` 时返回的坐标可用于地图显示
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4. `geocode` 为 true 时才能获取地址信息
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## 参考资源
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- **官方文档**: https://uniapp.dcloud.net.cn/api/location/location.html#getlocation
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- **打开地图**: https://uniapp.dcloud.net.cn/api/location/location.html#openlocation
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- **选择位置**: https://uniapp.dcloud.net.cn/api/location/location.html#chooselocation
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