titleview dissapears when a subview is added? - ios

Question

This is new to me so forgive me if I'm not asking the right question.
I'm following a tutorial where we are creating a few subviews inside of a titleview for the navigation bar so that a picture and username displays. When I create the intial titleview with a red background, it shows up as expected. However, when I add a container subview to place the text and image, the red titleview disappears. I finished the tutorial and the text shows up in the right place, but it doesn't allow me to add a tap gesture, since the titleview isn't there anymore to tap?
I'll add my code for this function- hopefully there's a stupid mistake that I'm missing.
func setupNavBarWithUser(user: User) {
let titleView = UIView()
titleView.frame = CGRect(x: 0, y: 0, width: 130, height: 35)
titleView.backgroundColor = UIColor.red
let containerView = UIView()
containerView.translatesAutoresizingMaskIntoConstraints = false
containerView.backgroundColor = UIColor.blue
titleView.addSubview(containerView)
let profileImageView = UIImageView()
profileImageView.translatesAutoresizingMaskIntoConstraints = false
profileImageView.contentMode = .scaleAspectFill
profileImageView.layer.cornerRadius = 20
profileImageView.clipsToBounds = true
if let profileImageUrl = user.profileImageUrl {
profileImageView.loadImageUsingCacheWithUrlString(urlString: profileImageUrl)
}
containerView.addSubview(profileImageView)
profileImageView.leftAnchor.constraint(equalTo: containerView.leftAnchor).isActive = true
profileImageView.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant: 35).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 35).isActive = true
let nameLabel = UILabel()
containerView.addSubview(nameLabel)
nameLabel.text = user.name
nameLabel.translatesAutoresizingMaskIntoConstraints = false
nameLabel.leftAnchor.constraint(equalTo: profileImageView.rightAnchor, constant: 8).isActive = true
nameLabel.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
nameLabel.rightAnchor.constraint(equalTo: containerView.rightAnchor).isActive = true
nameLabel.heightAnchor.constraint(equalToConstant: 40).isActive = true
containerView.centerXAnchor.constraint(equalTo: titleView.centerXAnchor).isActive = true
containerView.centerYAnchor.constraint(equalTo: titleView.centerYAnchor).isActive = true
self.navigationItem.titleView = titleView
titleView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(showChatController)))
titleView.isUserInteractionEnabled = true
}

Answer 1

Replace setupNavBarWithUser method with this:
func setupNavBarWithUser(user: User) {
let titleView = UIView()
titleView.frame = CGRect(x: 0, y: 0, width: 130, height: 45)
titleView.backgroundColor = UIColor.red
let containerView = UIView()
containerView.translatesAutoresizingMaskIntoConstraints = false
containerView.backgroundColor = UIColor.blue
self.navigationItem.titleView = titleView
titleView.addSubview(containerView)
containerView.topAnchor.constraint(equalTo: titleView.topAnchor, constant: 0).isActive = true
containerView.bottomAnchor.constraint(equalTo: titleView.bottomAnchor, constant: 0).isActive = true
containerView.leadingAnchor.constraint(equalTo: titleView.leadingAnchor, constant: 0).isActive = true
containerView.trailingAnchor.constraint(equalTo: titleView.trailingAnchor, constant: 0).isActive = true
let profileImageView = UIImageView()
profileImageView.translatesAutoresizingMaskIntoConstraints = false
profileImageView.contentMode = .scaleAspectFill
profileImageView.layer.cornerRadius = 20
profileImageView.clipsToBounds = true
if let profileImageUrl = user.profileImageUrl {
profileImageView.loadImageUsingCacheWithUrlString(urlString: profileImageUrl)
}
containerView.addSubview(profileImageView)
profileImageView.leftAnchor.constraint(equalTo: containerView.leftAnchor).isActive = true
profileImageView.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant: 35).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 35).isActive = true
let nameLabel = UILabel()
containerView.addSubview(nameLabel)
nameLabel.text = user.name
nameLabel.translatesAutoresizingMaskIntoConstraints = false
nameLabel.leftAnchor.constraint(equalTo: profileImageView.rightAnchor, constant: 8).isActive = true
nameLabel.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
nameLabel.rightAnchor.constraint(equalTo: containerView.rightAnchor).isActive = true
nameLabel.heightAnchor.constraint(equalToConstant: 40).isActive = true
self.navigationItem.titleView = titleView
titleView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(showChatController)))
titleView.isUserInteractionEnabled = true
}
You can compare the codes. As you can see you have to add subview in a proper order to set your constraints.