CODEWITHSUNDEEP
swiftuiviewcontroller
Ronak Patel
Ronak Patel

Reputation: 629

How do I call multiple custom alert views on a UIButton tap from a single UIViewController?

I have a ViewControllerA and two custom alerts and I'm calling the first custom alert on the buttonclick action of the ViewControllerA.

In first custom alert I'm having a text field and a button.

When I click on the button action of first custom alert , I want to open the second custom alert and both alerts I want show on ViewControllerA.

The expected result is to show both the custom alerts on the single ViewControllerA

Please help me out to solve this problem

class ViewControllerA : UIViewController{
@IBAction func ViewControllerAButtonTapped(_ sender: Any) {  
        FirstCustomalert.instance.ShowAlert()
        self.dismiss(animated: true, completion: nil)
    }
}
class FirstCustomAlert : UIView{
 @IBOutlet var parentView: UIView!
    static let instance = FirstCustomAlert()
    @IBOutlet weak var firstTextField: UITextField!
    override init(frame: CGRect) {
        super.init(frame: frame)
        Bundle.main.loadNibNamed("FirstCustomAlert", owner: self, options: nil)

        CommonInit()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    func CommonInit(){

        alertView.frame = CGRect(x: center.x, y: center.y, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
        ParentView.autoresizingMask = [ .flexibleHeight , .flexibleWidth ]
    }
    func ShowAlert(){
        UIApplication.shared.keyWindow?.addSubview(ParentView)
    }
    @IBAction func SubmitBittonTapped(_ sender: Any) {

        SecondCustomAlert.instances.ShowAlerts()
    }
}

class SecondCustomAlert :  UIView{
 @IBOutlet var parentView: UIView!
    @IBOutlet weak var secondTextField: UITextField!
    static let instances = SecondCustomAlert()
    override init(frame: CGRect) {
        super.init(frame: frame)
 Bundle.main.loadNibNamed("SecondCustomAlert", owner: self, options: nil)
    }
        required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    func CommonInit(){
        parentView.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
        parentView.autoresizingMask = [.flexibleWidth , .flexibleHeight ]
    }
    func ShowAlerts(){

        UIApplication.shared.keyWindow?.addSubview(parentView)
    }
}

Upvotes: 0

Views: 163

Answers (1)

Alexander
Alexander

Reputation: 1504

Firstly, there are a number of things you need to change:

  1. Naming convention:

Your methods should be named with lowerCamelCase and only classes and objects should be CamelCase.

  1. You are building a custom alert to be displayed from anywhere in the app. Since you are already using .xib, I would suggest that you refactor your alert into a ViewController and use present(viewController: animated:) with presentationStyle of .overCurrentContext. You can get the topViewController on the keyWindow which you have and call the present function. Then in your AlertViewController you can do separate animations to display the second view of the alert upon button click.

What you are trying to do now is put too much logic into a UIView, which is not best practise and it isn't very scalable. Plus it looks messy. You are trying to achieve something relatively simply but the current approach already creates 2 customs views and you are already encountering callback issues.

ADD:

class ViewControllerA : UIViewController{
@IBAction func ViewControllerAButtonTapped(_ sender: Any) {  
        let customAlert = CustomAlertViewController()
        customAlert.modalPresentationStyle = .overCurrentContext
        self.present(customAlert, animated: true, completion: nil)
    }
}

Upvotes: 3

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