在 UIAlertController 之后重新加载视图

Question

I have a signup screen with a phone number field. If the user type a too short phone number, I display an UIAlertController. After she dismisses the Alert, the user can't send her phone number again as the send button is tapped. Is there a way to reload the view when the alert is dismissed to make the button untapped? Thanks

    func present_alert(title:String, content : String){
    let myAlert = UIAlertController(title:title, message:content, preferredStyle:UIAlertControllerStyle.alert)
    let okAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler:nil)
    myAlert.addAction(okAction)
    self.present(myAlert, animated:true)
}

Answer 1

the main reason on button click you disabled the yourbutton sender.isEnabled = false , when ever the alert is presented again enable your button , surely works addyourbuttonName.isEnabled = true

if you want to clear the current textfield value then use yourtextfield.text = ""

let alertController = UIAlertController(title: “Simple”, message: “Simple alertView demo with Cancel and Ok.”, preferredStyle: UIAlertControllerStyle.alert)

let okAction = UIAlertAction(title: “OK”, style: UIAlertActionStyle.default) { (result : UIAlertAction) -> Void in
print(“OK”)
 yourtextfield.text = ""
 yourtextfield.becomeFirstResponder()
 addyourbuttonName.isEnabled = true
}


alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)

Answer 2

func present_alert(title:String, content:String, button:UIButton){
    let myAlert = UIAlertController(title:title, message:content, preferredStyle:UIAlertControllerStyle.alert)
    let okAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler:nil)
    myAlert.addAction(okAction)
    self.present(myAlert, animated:true){
        button.isEnabled = true
    }
}

Answer 3

As i understand your issue the problem is that you receive your button false value of parameter "isEnabled". To fix that just add to your block last string:

buttonName.isEnabled = true

Answer 4

After click on UIAlertAction(cancel or ok), you can add some functionality in that ok or cancel method. In the final step of that method, add viewWillAppear(true) method. Then UIViewController automatically refresh.