os8 location authorization 错误.

今天在XCode6上打开之前写的地图时，给我报这个错 location authorization

去网上查了一番，才知道Xcode6对地图的设置稍有修改
在stackoverflow上找到了答案 iOS 8 : Location Services not working

我权当翻译一遍，记录一下.

解决这个问题一般两个步骤。

1 在工程info。plist文件中添加下面值，任意一个

>	<key>NSLocationWhenInUseUsageDescription</key>
	<string>The spirit of stack overflow is coders helping coders</string>

	<key>NSLocationAlwaysUsageDescription</key>
	<string>I have learned more on stack overflow than anything else</string>

value值随意填，会在请求用户授权时，显示给用户.

2 接着就在工程中加入这几行代码

      if ([self.locationManager 	respondsToSelector:@selector(requestWhenInUseAuthorization)]) {

  [self.locationManager requestWhenInUseAuthorization];
}
	[self.locationManager startUpdatingLocation];

至于这个就看之前填的是哪个，永久还是每次都需要授权
requestWhenInUseAuthorization

另，英文还可以的推荐直接看这篇，讲解的很好Core Location Manager Changes in iOS 8