第一步 location = [[CLLocationManager alloc] init]; location.delegate= self; [location requestAlwaysAuthorization]; 第二步 在Plist中追加下面两个字段 （必须有，最少一个，内容是系统ALert的文言，文言可为空） NSLocationWhenInUseDescriptionNSLocationAlwaysUsageDescription第三步 有了新的Delegate方法。 - (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {     switch (status)    {             case kCLAuthorizationStatusNotDetermined:             if ([location respondsToSelector:@selector(requestAlwaysAuthorization)])             {             [locationrequestAlwaysAuthorization];             }             break;         default:             break;
  } }