ios - 尝试启动 MapKit 位置更新而不提示在 ios 9 中使用 objective-c 进行位置授权

Question

我试图在 iOS 8 上使用 MapKit，但我一直收到错误:

Trying to start MapKit location updates without prompting for location authorization. Must call   
-[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager 
requestAlwaysAuthorization] first. 

在这里查找，我发现我必须在我的 plist 中实现 NSLocationWhenInUsageDescription，但没有任何反应，我仍然在控制台中收到该错误。我做错了什么？

Answer 1

1.- 将以下行添加到您的 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>

2.- 位置授权提示:

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

3.-当用户接受时更新位置...

   - (void) locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status{

        if (status == kCLAuthorizationStatusAuthorizedAlways || status == kCLAuthorizationStatusAuthorizedWhenInUse) {
            [self.locationManager startUpdatingLocation];

    }
}