ViewDidLoad called after rejectViewControllerAnimated

Question

Why is the viewDidLoad method called after the ViewControllerAnimated is rejected. I use BSImagePickerViewController for multiple image selection. So, after rejecting the viewDidLoad method of the gallery again.

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.  

    let alertController = UIAlertController(title: title, message: "Start by selecting the photos/videos you want to represent your room", preferredStyle: .Alert)

    alertController.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default)
    { action -> Void in
        // Put your code here

            self.setImage()
        })

    self.presentViewController(alertController, animated: true, completion: nil)
}

func setImage()
{
    // BSImagePicker

    bs_presentImagePickerController(vc, animated: false,
                                    select: { (asset: PHAsset) -> Void in
                                        print("Selected: \(asset)")
        }, deselect: { (asset: PHAsset) -> Void in
            print("Deselected: \(asset)")
        }, cancel: { (assets: [PHAsset]) -> Void in
            print("Cancel: \(assets)")
        }, finish: { (assets: [PHAsset]) -> Void in
            print("Finish: \(assets)")

            self.submit()
        }, 
}

Why is this happening, I don’t get it, I found only one link that regresses this link but does not help me, it does not work as needed. Please help, thanks.

Update:

Rejection method, in the BSImagePickerViewController class

func doneButtonPressed(sender: UIBarButtonItem) {
    guard let closure = finishClosure, let photosDataSource = photosDataSource else {
        dismissViewControllerAnimated(true, completion: nil)
        return
    }

    dispatch_async(dispatch_get_global_queue(0, 0), { () -> Void in
        closure(assets: photosDataSource.selections)
    })

    dismissViewControllerAnimated(true, completion: nil)
}