IOS8 使用CoreLocation獲取地理位置請求不彈出的解決方法：

1.在Info.list文件下添加一個鍵為NSLocationWhenInUseUsageDescription，值為想要給用戶看到的文本（也可以為空）

2.定義一個CLLocationManager后，使用[_locationManager requestWhenInUseAuthorization];請求用戶允許獲取地理位置

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?CoreLocation獲取地理位置的三種方式：

1：蜂窩基站：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衛星定位：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.?

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編寫獲取地理位置時應處理以下幾種情況：

? 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?

轉載于:https://www.cnblogs.com/guitarandcode/p/5487648.html

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