Custom Alert creating Fatal error: init(coder:) has not been implemented - ios

Question

Good Day,
I want to create a custom alert for gather information from the user. However, it will not load and crashes with the following code:
xib file
import Foundation
import UIKit
class WorkoutAlert: UIView {
static let instance = WorkoutAlert()
#IBOutlet var parentView: UIView!
#IBOutlet weak var alertView: UIView!
#IBOutlet weak var titleLabel: UILabel!
#IBAction func workoutTextField(_ sender: UITextField) {
}
#IBAction func datePicker(_ sender: UIDatePicker) {
}
#IBAction func cancelButtonPressed(_ sender: UIButton) {
parentView.removeFromSuperview()
}
#IBAction func doneButtonPressed(_ sender: UIButton) {
}
override init(frame: CGRect) {
super.init(frame: frame)
Bundle.main.loadNibNamed("WorkoutAlert", owner: self, options: nil)
commonInit()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func commonInit () {
alertView.layer.cornerRadius = 10
parentView.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
parentView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
}
func showAlert(title: String) {
self.titleLabel.text = title
UIApplication.shared.keyWindow?.addSubview(parentView)
}
// MARK: - End of Code
}
Relevant code for the ViewController using the xib:
class WorkoutViewController: UIViewController {
#IBAction func addButtonPressed(_ sender: UIBarButtonItem) {
WorkoutAlert.instance.showAlert(title: "Add a new workout")
}
}
Constraints for the xib
Any assistance is greatly appreciated. I'm a novice and have found many ways and examples for creating alerts instead of using the standard alert controller.

Answer 1

You need to implement init methods according to your needs. But better to implement boths and you don't need singleton pattern here
class WorkoutAlert: UIView {
#IBOutlet var parentView: UIView!
#IBOutlet weak var alertView: UIView!
#IBOutlet weak var titleLabel: UILabel!
#IBAction func workoutTextField(_ sender: UITextField) {
}
#IBAction func datePicker(_ sender: UIDatePicker) {
}
#IBAction func cancelButtonPressed(_ sender: UIButton) {
parentView.removeFromSuperview()
}
#IBAction func doneButtonPressed(_ sender: UIButton) {
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
public override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
private func commonInit () {
Bundle.main.loadNibNamed("WorkoutAlert", owner: self, options: nil)
alertView.layer.cornerRadius = 10
parentView.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
parentView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
}
func showAlert(title: String) {
self.titleLabel.text = title
UIApplication.shared.keyWindow?.addSubview(self)
}
// MARK: - End of Code
}
In your controller
class WorkoutViewController: UIViewController {
#IBAction func addButtonPressed(_ sender: UIBarButtonItem) {
let alert = WorkoutAlert(frame: self.view.bounds) // or can set frame here WorkoutAlert(frame: frame here)
alert.showAlert(title: "Add a new workout")
}
}