XIB view not showing with correct layout [iOS Swift] - ios

Question

I'm trying to make a custom alert view and facing some issues with the fact that the displayed view is cutting the bottom half of the view (Images below)
How it's being displayed:
Desired Output:
So basically, I have a XIB called CustomAlertView supported by a class of same name with init as follows:
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commonInit()
}
private func commonInit() {
Bundle.main.loadNibNamed("CustomAlertView", owner: self, options: nil)
contentView.frame = self.bounds
contentView.translatesAutoresizingMaskIntoConstraints = true
addSubview(contentView)
//contentView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
}
I have another class that is responsible for creating an alert, CustomAlert, using the customAlertView. This CustomAlert class is creating the backgroundView and dialogView( which I'm trying to add my customAlertView to it) with the following code:
func initialize(title:String, description:String){
dialogView.clipsToBounds = true
backgroundView.frame = frame
backgroundView.backgroundColor = UIColor.black
backgroundView.alpha = 0.6
backgroundView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(didTappedOnBackgroundView)))
addSubview(backgroundView)
dialogView.frame.origin = CGPoint(x: 0, y: 0)
dialogView.frame.size = CGSize(width: frame.width-32, height: frame.height/3)
dialogView.backgroundColor = UIColor.white
dialogView.layer.cornerRadius = 6
let alertView = CustomAlertView.init(frame: self.bounds)
alertView.titleLabel.text = title
alertView.descriptionLabel.text = description
alertView.cancelButton.backgroundColor = UIColor.brown
dialogView.addSubview(alertView)
addSubview(dialogView)
}
I believe that I'm making a confusion with the frames and bounds but couldn't find a solution.
I'd like the desired output to be placed perfectly inside the dialogView.
EDIT
Code for my .show function in CustomAlert
func show(animated:Bool){
self.backgroundView.alpha = 0
self.dialogView.center = CGPoint(x: self.center.x, y: self.frame.height + self.dialogView.frame.height/2)
UIApplication.shared.delegate?.window??.rootViewController?.view.addSubview(self)
if animated {
UIView.animate(withDuration: 0.33, animations: {
self.backgroundView.alpha = 0.66
})
UIView.animate(withDuration: 0.33, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 10, options: UIViewAnimationOptions(rawValue: 0), animations: {
self.dialogView.center = self.center
}, completion: { (completed) in
})
}else{
self.backgroundView.alpha = 0.66
self.dialogView.center = self.center
}
}
Github link git-alert-view

Answer 1

For anyone facing the same difficulties as me, I was able to accomplish the wanted result.
I used AutoLayouts as suggested by #HAK. But instead of writing my own NSLayoutConstraint I used roberthein library called TinyConstraints.
Basically, I used as follow:
Instead of
NSLayoutConstraint.activate([
alertView.topAnchor.constraint(equalTo: superview.topAnchor, constant: 0),
alertView.leadingAnchor.constraint(equalTo: superview.leadingAnchor, constant: 0),
alertView.bottomAnchor.constraint(equalTo: superview.bottomAnchor, constant: 0),
alertView.trailingAnchor.constraint(equalTo: superview.trailingAnchor, constant:
0)])
with TinyConstraints:
alertView.edges(to: superview)
That´s it

Answer 2

Change your CustomAlertView like this:
class CustomAlertView: UIView {
#IBOutlet weak var titleLabel: UILabel!
#IBOutlet weak var descriptionLabel: UILabel!
#IBOutlet weak var confirmButton: UIButton!
#IBOutlet weak var cancelButton: UIButton!
override init(frame: CGRect) {
super.init(frame: frame)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
static func customAlert() -> CustomAlertView {
return Bundle.main.loadNibNamed("CustomAlertView", owner: self, options: nil)!.first as! CustomAlertView
}
}
Your CustomAlert's initialize method like this:
func initialize(title:String, description:String){
dialogView.clipsToBounds = true
backgroundView.frame = frame
backgroundView.backgroundColor = UIColor.black
backgroundView.alpha = 0.6
backgroundView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(didTappedOnBackgroundView)))
addSubview(backgroundView)
dialogView.frame.origin = CGPoint(x: 0, y: 0)
dialogView.frame.size = CGSize(width: frame.width-32, height: frame.height/3)
dialogView.backgroundColor = UIColor.white
dialogView.layer.cornerRadius = 6
let alertView = CustomAlertView.customAlert()
alertView.titleLabel.text = title
alertView.descriptionLabel.text = description
alertView.cancelButton.backgroundColor = UIColor.brown
dialogView.addSubview(alertView)
addSubview(dialogView)
}
In the CustomAlertView xib:
1. Select fileowner and remove the class (default to NSObject).
2. Select fileowner and then remove all the outlets.
3. Select your content view and give it class = CustomAlertView.
4. Select your CustomAlertView and make all outlet connections.
Final Xib:
And you have a working alert:
PS: Adjust the UI accordingly.

Answer 3

In your xib class add this :
override func awakeFromNib() {
super.awakeFromNib()
xibSetup()}
func xibSetup() {
guard let view = loadViewFromNib() else { return }
view.frame = bounds
view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
addSubview(view)
contentView = view
}
Reference from this : https://medium.com/zenchef-tech-and-product/how-to-visualize-reusable-xibs-in-storyboards-using-ibdesignable-c0488c7f525d#.3c0javomy**