I can call so imagePicker that the program is waiting for image selection - swift3

Question

my delegate always returns nil for my image in custom table cell.
PhotoTakingHelper just class for imagepicker setting.
How i can pausing programm for pick image?
Method in CustomCell class:
#IBAction func loadImageButtonTapped(_ sender: UIButton) {
loadingImage=true
if delegate != nil {
let (image,name) = delegate.loadImageForQuestionAction(question: question)
print("Delegate return \(image)")
imageInCreatingCell = image
nameInCreatingCell = name
//loadImageButton.isHidden = true
}
}
Method in tableView class:
func loadImageForQuestionAction(question: Question) -> (UIImage?,String?) {
var returnImage:UIImage?
var returnName:String?
self.photoTakingHelper=PhotoTakingHelper(viewcontroller: self, callback: { (image:UIImage?,name:String?) in
if let photoImage = image {
print(photoImage)
print(name)
returnImage=photoImage
returnName=name
//NEED SHOWING IMAGE NAME HOW LABEL
print("loadImageAction")
}
})
return (returnImage,returnName)
}
Method in PhotoTakingHelper:
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
//viewController.dismiss(animated: false, completion: nil)
categoryViewController.dismiss(animated: false, completion: nil)
var fileName:String? = nil
if let imageURL = info[UIImagePickerControllerReferenceURL] as? URL {
let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
fileName = result.firstObject?.value(forKey: "filename") as! String?
}
if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
callBack(image,fileName)
} else if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
callBack(image,fileName)
} else {
print("Something went wrong")
callBack(nil,nil)
}
}

Answer 1

UPDATE:
func loadImageForQuestionAction(question: Question, completion: #escaping (UIImage?, String?) -> ()) {
var returnImage:UIImage?
var returnName:String?
self.photoTakingHelper=PhotoTakingHelper(viewcontroller: self, callback: { (image:UIImage?,name:String?) in
DispatchQueue.main.async {
if let photoImage = image {
print(photoImage)
print(name)
returnImage=photoImage
returnName=name
completion(returnImage,returnName)
//NEED SHOWING IMAGE NAME HOW LABEL
print("loadImageAction")
} else {
completion(returnImage,returnName)
}
}
})
}