如何在Expo SDK 42+中获取后台定位权限？

expo --version

npm install -g expo-cli

expo install expo-location

import * as Location from 'expo-location';

...

useEffect(() => {
  (async () => {
    let { status } = await Location.requestForegroundPermissionsAsync();
    if (status !== 'granted') {
      console.log('定位权限被拒绝');
      return;
    }

    let backgroundStatus = await Location.requestBackgroundPermissionsAsync();
    if (backgroundStatus.status !== 'granted') {
      console.log('后台定位权限被拒绝');
      return;
    }

    // 这里可以继续处理后台定位权限获取成功后的逻辑
  })();
}, []);