环境信息

1.小程序框架： Taro

2. Taro 版本：3.4.0

设计流程图

核心代码

import Taro from "[@tarojs](/user/tarojs)/taro";
// TODO 自己实现的 store
import store from '@/utils/store';
// TARO.env 
import { PLATFORM_TYPE } from '@/constant/index';

const locationEntity: TaroMiniApp.IUtilsLocationEntity = {
  checkLocation: () => {
    return Taro.getSetting()
      .then((res: Taro.getSetting.SuccessCallbackResult) => {
        return Promise.resolve(res.authSetting['scope.userLocation'])
      }).catch((err: TaroGeneral.CallbackResult) => {
        throw Promise.reject(err);
      })
  },

  authLocation: async () => {
    try {
      const settingRes: Taro.getSetting.SuccessCallbackResult = await Taro.getSetting();
      const firstAuth = 'scope.userLocation' in settingRes.authSetting;
      // 第一次授权
      if (!firstAuth) {
        const uerLocationRes: TaroMiniApp.IUtilsLocationEntity.TLocationCallbackResult = await locationEntity.getUserLocation();
        return uerLocationRes;
      }

      // 未授权
      if (!settingRes.authSetting['scope.userLocation']) {
        const modalRes: Taro.showModal.SuccessCallbackResult = await Taro.showModal({
          title: '提示',
          content: '您未授权定位权限,无法获取您的定位',
          cancelText: '取消',
          confirmText: '去设置',
          confirmColor: '#ff5500',
        });
        if (modalRes.confirm) {
          // 进入设置类别
          const openSettingRes = await Taro.openSetting();
          console.log(openSettingRes)
          const uerAuthLocationRes: TaroMiniApp.IUtilsLocationEntity.TLocationCallbackResult = await locationEntity.getUserLocation();
          return uerAuthLocationRes;
        }
        return {
          errMsg: "getLocation:fail auth deny"
        }
      }

      return {
        errMsg: "getLocation:ok"
      }
    } catch (error) {
      console.log('err:', error);
      throw error;
    }
  },

  // 获取用户定位
  getUserLocation: async (realTime: boolean = false) => {
    try {
      // 非实时
      if (!realTime && store.get('USER_LOCATION')) {
        return store.get('USER_LOCATION');
      }

      const userLocationRes: Taro.getLocation.SuccessCallbackResult = await Taro.getLocation({ type: 'gcj02' })
      if (PLATFORM_TYPE === 'WEAPP') {
        if (userLocationRes?.errMsg.indexOf('ok') !== -1) {
          store.set('USER_LOCATION', userLocationRes, false);
        }
      }
      if (PLATFORM_TYPE === 'ALIPAY') {
        store.set('USER_LOCATION', userLocationRes, false);
      }
      console.log("userLocationRes:", userLocationRes);
      return userLocationRes;
    } catch (error) {
      throw error;
    }
  },

  // 一键式授权
  autoAuth: async () => {
    try {
      const checkAuth: any = await locationEntity.checkLocation();
      if (!checkAuth) {
        const res = await locationEntity.authLocation();
        return res;
      }
      return await locationEntity.getUserLocation();
    } catch (error) {
      throw error;
    }
  }
}

export default locationEntity;

核心逻辑

• 第一次定位授权的判断，通过 in 运算符的