Add imageview to all viewcontrollers programmatically - ios

Question

there is a requirement like add an imageview to all viewcontrollers but I have 150+ xib's and it is time consuming to put imageview in every single xib.
Is there a common way to do it? I googled but nothing useful found.
Any help would be appreciated.

Answer 1

It will be easy if you use base class like this
class BaseVC: UIViewController
{
var imageView:UIImageView = UIImageView.init()
override func viewDidLoad() {
super.viewDidLoad()
addImageView()
}
override func viewWillAppear(_ animated: Bool) {
//self.view.bringSubview(toFront: imageView) //To bring imageview infront of other views put this method as per your requirement
}
func addImageView(name:String = "default")
{
let image = UIImage(named: name)
imageView.image = image
imageView.frame = CGRect(x: 0, y: 0, width: 100, height: 200)
//view.addSubview(imageView)
view.insertSubview(imageView, at: 0) /*For put image view below all image*/
}
}
You need to derive all your view controller from this like this
class YourVC: BaseVC
also you can change the image with different viewcontrollers.
like
class YourVC: BaseVC
{
override func viewDidLoad() {
super.viewDidLoad()
addImageView(name:"xyz")
}
}

Answer 2

you can write an extension for UIView to add imageview into it and run it into every your viewcontrollers.
extension UIView {
func addImage() {
let imageView = UIImageView(frame: frame)
imageView.image = UIImage(named: "Your Image Name")
addSubview(imageView)
imageView.didMoveToSuperview()
}
}

Answer 3

Create New ViewController without storyboard.
import UIKit
class BaseViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
setImageView()
}
func setImageView() {
let thisImageView = UIImageView(frame: CGRect(x: 10, y: 10, width: 70, height: 70))
thisImageView.image = UIImage(named: "your image name")
view.addSubview(thisImageView)
}
}
now you can set this BaseViewController as delegate of your project's ViewControllers.
import UIKit
class MainViewController: BaseViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
now you have this ImageView in MainViewController and all ViewControllers have BaseViewContoller as delegate.
Hope to be useful. Also sorry about my English.

Answer 4

TL;DR No. Based on my understanding of what you are imagining, no you can't write a function to add a UIImageView to every one of your viewControllers.
Long answer:
You need to create a separate controller swift file for each View and set it up in that file. You could create a supporting file in which you setup up the the ImageView then call in in the viewDidLoad for each view controller. (You could even make this an extension of UIView so you can just call something like self.setUpImageView())
My personal recommendation would be to drop the xibs as soon as you can and recreate everything pragmatically, I know it's a headache to throw all your work away but it is really worth it in the end on top of just being good practice. I have a file that I found that makes autolayout a breeze that I can share with you if you'd like. I used to really enjoy storyboards and xibs myself but they are a hassle that just isn't worth it anymore and cause such a headache in situation like this.