Question

这是警报的代码。问题是，当用户按下“Ja”按钮时，我想要转到另一个VC，这意味着“是”英文。

@IBAction func TillbakaAction(_ sender: UIButton)
{
     createAlert(title: "Är du säker på att du vill börja om?", message: "Ifyllda betyg nollställs")


}
func createAlert (title:String, message:String)
{
    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)

    //CREATING ON BUTTON
    alert.addAction(UIAlertAction(title: "Ja", style: UIAlertActionStyle.default, handler: { (action) in
        alert.dismiss(animated: true, completion: nil)
        print ("Jag vill gå tillbaka")



                }))

    alert.addAction(UIAlertAction(title: "Nej", style: UIAlertActionStyle.default, handler: { (action) in
        alert.dismiss(animated: true, completion: nil)
        print("Nej, jag vill inte gå tillbaka")
    }))

    self.present(alert, animated: true, completion: nil)

Answer 1

无需拨打dismiss警报，当您按AlertController的任何操作时，它会自动解除警报。

只需添加performSegue(withIdentifier:sender:)即可。

let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)

alert.addAction(UIAlertAction(title: "Ja", style: .default, handler: { (action) in

    print ("Jag vill gå tillbaka")
    // call the segue at hare
    self.performSegue(withIdentifier:"SegueIdentifer", sender: nil)
}))

alert.addAction(UIAlertAction(title: "Nej", style: .default, handler: { (action) in

    print("Nej, jag vill inte gå tillbaka")
}))

self.present(alert, animated: true)

Answer 2

@IBAction func TillbakaAction(_ sender: UIButton)
{
     createAlert(title: "Är du säker på att du vill börja om?", message: "Ifyllda betyg nollställs")


}
func createAlert (title:String, message:String)
{
    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)

    //CREATING ON BUTTON
    alert.addAction(UIAlertAction(title: "Ja", style: UIAlertActionStyle.default, handler: { (action) in
        alert.dismiss(animated: true, completion: nil)
        print ("Jag vill gå tillbaka")
// call the segue at hare


                }))

    alert.addAction(UIAlertAction(title: "Nej", style: UIAlertActionStyle.default, handler: { (action) in
        alert.dismiss(animated: true, completion: nil)
        print("Nej, jag vill inte gå tillbaka")
    }))

    self.present(alert, animated: true, completion: nil)

如何使用AlertView进行调整？

2 个答案: