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  • iOS学习之CoreLocation相关知识

    IOS8 使用CoreLocation获取地理位置请求不弹出的解决方法:

    1.在Info.list文件下添加一个键为NSLocationWhenInUseUsageDescription,值为想要给用户看到的文本(也可以为空)

    2.定义一个CLLocationManager后,使用[_locationManager requestWhenInUseAuthorization];请求用户允许获取地理位置

     CoreLocation获取地理位置的三种方式:

    1:蜂窝基站:Cell tower triangulation will always work if there is a signal but it’s not very precise. 

    2:Wi-Fi:Wi-Fi positioning works better but that is only available if there are known Wi-Fi routers nearby. This system uses a big database that contains the locations of wireless networking equipment. 

    3:GPS卫星定位:You get the best results from the GPS (Global Positioning System) but that attempts a satellite communication and is therefore the slowest of the three. It also won’t work very well indoors. 

    编写获取地理位置时应处理以下几种情况:

    • Finds a location with the desired accuracy 

    • Finds a location that is not as accurate as you’d like and you don’t get any more accurate readings

    • Doesn’t find a location at all
    • Takes too long finding a location 

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  • 原文地址:https://www.cnblogs.com/guitarandcode/p/5487648.html
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