获取当前位置时出现问题

我想获取设备的当前位置。代码正常工作。如果用户未更改位置服务的应用授权状态，则会提供位置信息。我还可以检查用户是否拒绝了位置服务的许可。

问题是用户取消授权应用程序使用位置服务，然后再次授权。在这种情况下，在此之后，如果我尝试获取位置，nil尽管它调用了

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

委托方法与状态3即kCLAuthorizationStatusAuthorized。

获取当前位置的代码：

CLLocation * location = self.locationManager.location;

吸气方法：

- (CLLocationManager *)locationManager
{
    if (!locationManager)
    {
        locationManager = [[CLLocationManager alloc] init];
        locationManager.delegate = self;
    }

    return locationManager;
}

CLLocationManager委托方法：

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
    DLog(@"Location authorization changed : %d", status);

    // If user has denied permission for location service
    if (status == kCLAuthorizationStatusDenied)
    {
        DLog(@"Location service denied.");

        // If authorization status changed method is already called, then SDK will not call again on same object.
        // Thus, set CLLocationManager object to nil so that next time we try to get location, it will create a new object,
        // and that will send message about authorization status changed.
        self.locationManager.delegate = nil;
        self.locationManager = nil;
    }
    else if (status == kCLAuthorizationStatusNotDetermined)
    {
        // If authorization status changed method is already called, then SDK will not call again on same object.
        // Thus, set CLLocationManager object to nil so that next time we try to get location, it will create a new object,
        // and that will send message about authorization status changed.
        self.locationManager.delegate = nil;
        self.locationManager = nil;
    }
    else if (status == kCLAuthorizationStatusAuthorized)
    {

    }
}

关于这个有什么想法吗？