在单元格中轻按imageview时如何转到其他视图

Question

I have a table view using a custom cell (xib).

This custom cell have an image and a description. If user tapped the image (not the cell) , it should display other page/view.

this is the function called when image tapped

@objc func imageTapped(){
    let sb = UIStoryboard(name: "SbIdentifier", bundle: nil)
    let vc = sb.instantiateViewController(withIdentifier: "ProfileViewController") as! ProfileViewController
    print("image tapped")
    //self.window?.rootViewController?.parent?.navigationController?.pushViewController(vc, animated: true)
 }

I tried used the push view controller but nothing happened.

Answer 1

You can use delegate pattern here to handle tap on profile image in tableViewCell to push ProfileViewController.

First create the CellImageTappableDelegate protocol

protocol CellImageTappableDelegate: class {
    func didTapProfileImage(with imageUrl: String)
}

then create the delegate property in Your CustomCell

weak var imageTapDelegate: CellImageTappableDelegate?

now enable isUserInteractionEnabled property on UIImageView

image.isUserInteractionEnabled = true

then add the tapGestureRecognizer to your imageView and implement the selector

let tapGestureRecognizer = UITapGestureRecognizer.init(target: self, action: #selector(CustomProfileCell.didTapProfileImage(_:)))
        profileImageView.addGestureRecognizer(tapGestureRecognizer)

func didTapProfileImage(_ tapGesture: UITapGestureRecognizer) {
     self.imageTapDelegate?.didTapProfileImage(with: self.profileImageUrl)
}

in tableView datasource cellForRowAt: method in your UIViewController subclass assign the delegate to self and implement the protocol method

cell.imageTapDelegate = self

func didTapProfileImage(with imageUrl: String) {
   print("Profile image tapped")
   let storyboard = UIStoryboard(name: "SbIdentifier", bundle: nil)
   let profileVC = storyboard.instantiateViewController(withIdentifier: "ProfileViewController") as! ProfileViewController
   profileVC.imageUrl = imageUrl
   self.navigationController?.pushViewController(profileVC, animated: true)
}

Answer 2

RootViewController would not have a parent, which would definitely not have a navigationController. If the navigationController is the first viewController in your hierarchy, you can try:

(self.window?.rootViewController as? UINavigationController)?.pushViewController(vc, animated: true)