判断位置逻辑，参考博客：http://blog.csdn.net/cuibo1123/article/details/45691631 感谢！

公司产品因为部分功能只能在国内地区上线，所以需要增加：判断用户所在地区是否在国内。

iOS10以后，首先需要在plist中添加权限key值：Privacy - Location Always Usage Description和Privacy - Location When In Use Usage Description
code：

- (void)checkLocation {
    
    if ([CLLocationManager locationServicesEnabled]) {
        _locationManager = [[CLLocationManager alloc]init];
        _locationManager.delegate = self;
        _locationManager.desiredAccuracy = kCLLocationAccuracyKilometer;
        _locationManager.distanceFilter = 10.0f;
        [_locationManager requestAlwaysAuthorization];
        [_locationManager startUpdatingLocation];
    } else {
        NSLog(@"用户不允许启动定位");
    }

}


- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(nonnull NSArray<CLLocation *> *)locations{
    
    [_locationManager stopUpdatingHeading];
    
    CLLocation *newLocation = locations.lastObject;
    
    if (![[ZCChinaLocation shared] isInsideChina: newLocation.coordinate]) {
        
      //不在国内
    }
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
     //定位失败
}