84 行
2.4 KiB
JavaScript
84 行
2.4 KiB
JavaScript
// pwuniapp/common/location.js
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// 同城生活陪伴小程序统一地图与定位能力服务层
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// 默认腾讯位置服务 Key（可在管理后台【安全合规-平台系统配置-地图定位服务】动态更新维护）
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// 申请地址：https://lbs.qq.com
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export const DEFAULT_TENCENT_MAP_KEY = '';
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/**
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* 计算两个经纬度坐标之间的球面距离（千米/km）
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* @param {number} lat1 纬度1
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* @param {number} lon1 经度1
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* @param {number} lat2 纬度2
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* @param {number} lon2 经度2
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* @returns {string} 格式化后的距离（例如 "1.2km" 或 "350m"）
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*/
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export function calculateDistance(lat1, lon1, lat2, lon2) {
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if (!lat1 || !lon1 || !lat2 || !lon2) return '同城';
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const toRad = (d) => (d * Math.PI) / 180;
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const R = 6371; // 地球平均半径(km)
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const dLat = toRad(lat2 - lat1);
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const dLon = toRad(lon2 - lon1);
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const a =
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Math.sin(dLat / 2) * Math.sin(dLat / 2) +
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Math.cos(toRad(lat1)) * Math.cos(toRad(lat2)) *
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Math.sin(dLon / 2) * Math.sin(dLon / 2);
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const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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const d = R * c;
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if (d < 1) {
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return `${Math.round(d * 1000)}m`;
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}
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return `${d.toFixed(1)}km`;
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}
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/**
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* 唤起地图选点 (chooseLocation)
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* 封装权限申请与平台兼容处理
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* @returns {Promise<{name: string, address: string, latitude: number, longitude: number}>}
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*/
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export function chooseMapLocation() {
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return new Promise((resolve, reject) => {
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// #ifdef MP-WEIXIN || APP-PLUS
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uni.chooseLocation({
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success: (res) => {
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resolve({
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name: res.name || '',
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address: res.address || '',
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latitude: res.latitude,
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longitude: res.longitude
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});
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},
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fail: (err) => {
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reject(err);
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}
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});
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// #endif
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// #ifndef MP-WEIXIN || APP-PLUS
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reject(new Error('当前运行环境不支持原生地图选点'));
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// #endif
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});
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}
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/**
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* 获取当前用户地理位置经纬度 (getLocation)
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* @returns {Promise<{latitude: number, longitude: number}>}
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*/
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export function getUserLocation() {
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return new Promise((resolve, reject) => {
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uni.getLocation({
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type: 'gcj02', // 国测局坐标系，腾讯地图/高德地图通用
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success: (res) => {
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resolve({
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latitude: res.latitude,
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longitude: res.longitude
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});
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},
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fail: (err) => {
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reject(err);
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}
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});
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});
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}
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