为什么requestWhenInUseAuthorization不提示用户访问该位置？

Question

在我的viewDidLoad方法中我有

locationManager = [[CLLocationManager alloc]init]; // initializing locationManager
locationManager.delegate = self; // we set the delegate of locationManager to self.
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];


if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
    [locationManager requestWhenInUseAuthorization];
}

并且调用了请求，但是没有提示用户？为什么？

Answer 1

您可能需要更新您的plist文件。这是一个tutorial how to do it，快速和脏：

您需要做的是将以下键之一添加到Info.plist文件中：

NSLocationWhenInUseUsageDescription

NSLocationAlwaysUsageDescription

您还需要请求相应位置方法WhenInUse或Background的授权。使用以下电话之一：

[self.locationManager requestWhenInUseAuthorization]
[self.locationManager requestAlwaysAuthorization]

还有一篇帖子我觉得很有帮助：

Location Services not working in iOS 8

这个答案详细说明how to update your plist file：

将以下行之一添加到info.plist

<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>

你可能想要在shipping the code之前定制和拼写检查info.plist文件中字典条目的字符串。