Is there any way to add UIPickerView into UIAlertController (Alert or ActionSheet) in Swift?

Question

I\'m totally new to swift (and iOS programming at all), but I started messing around with it (it wasn\'t a good idea when everything is still beta version :D). So I tried to

Answer 1

Swift 5.2 / Xcode 11.6 / iOS 11.4

func addAlert(){

    // create the alert
    let title = "This is the title"
    let message = "This is the message"
    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertController.Style.alert);
    alert.isModalInPopover = true;

    // add an action button
    let nextAction: UIAlertAction = UIAlertAction(title: "Action", style: .default){action->Void in
        // do something
    }
    alert.addAction(nextAction)

    // now create our custom view - we are using a container view which can contain other views
    let containerViewWidth = 250
    let containerViewHeight = 120
    let containerFrame = CGRect(x:10, y: 70, width: CGFloat(containerViewWidth), height: CGFloat(containerViewHeight));
    let containerView: UIView = UIView(frame: containerFrame);

    alert.view.addSubview(containerView)

    // now add some constraints to make sure that the alert resizes itself
    let cons:NSLayoutConstraint = NSLayoutConstraint(item: alert.view, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.greaterThanOrEqual, toItem: containerView, attribute: NSLayoutConstraint.Attribute.height, multiplier: 1.00, constant: 130)

    alert.view.addConstraint(cons)

    let cons2:NSLayoutConstraint = NSLayoutConstraint(item: alert.view, attribute: NSLayoutConstraint.Attribute.width, relatedBy: NSLayoutConstraint.Relation.greaterThanOrEqual, toItem: containerView, attribute: NSLayoutConstraint.Attribute.width, multiplier: 1.00, constant: 20)

    alert.view.addConstraint(cons2)

    // present with our view controller
    present(alert, animated: true, completion: nil)

}