Problems with getting text from UIAlertView textfield

Question

In my application I want a alert with a textfield. After clicking on "Done" I want to save the textfield input in a String. After clicking on "Cancel" I want only to close the alert. I've created my alert like this:

 var alert = UIAlertView() alert.title = "Enter Input" alert.addButtonWithTitle("Done") alert.alertViewStyle = UIAlertViewStyle.PlainTextInput alert.addButtonWithTitle("Cancel") alert.show() let textField = alert.textFieldAtIndex(0) textField!.placeholder = "Enter an Item" println(textField!.text)

The alert looks like this:

My alert

I want to know how to get the text from the textfield, and how to create events for the "Done" button and the "Cancel" button.

You need to implement the appropriate UIAlertViewDelegate methods (and set the delegate property of the alert view). — rmaddy
– rmaddy, Commented May 7, 2015 at 19:57
can someone give me an example with this "UIAlerrViewDelegate" ? — Pascal
– Pascal, Commented May 7, 2015 at 20:38
I searched about this topic, now I've a way to check which button was pressed. But I haven't found a running solution for getting the text from the textfield. So please help me about this! — Pascal
– Pascal, Commented May 8, 2015 at 19:12

bourvill · Accepted Answer · 2016-07-25 11:54:01Z

You may go with UIAlertController instead of UIAlertView.

I've already implemented and tested too using UIAlertController for what you actually want. Please try the following code

 var tField: UITextField! func configurationTextField(textField: UITextField!) { print("generating the TextField") textField.placeholder = "Enter an item" tField = textField } func handleCancel(alertView: UIAlertAction!) { print("Cancelled !!") } var alert = UIAlertController(title: "Enter Input", message: "", preferredStyle: .Alert) alert.addTextFieldWithConfigurationHandler(configurationTextField) alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler:handleCancel)) alert.addAction(UIAlertAction(title: "Done", style: .Default, handler:{ (UIAlertAction) in print("Done !!") print("Item : \(self.tField.text)") })) self.presentViewController(alert, animated: true, completion: { print("completion block") })

NS Spartan029 · Accepted Answer · 2015-05-07 19:09:16Z

You will have to implement the UIAlertViewDelegate's

optional func alertView(_ alertView: UIAlertView, clickedButtonAtIndex buttonIndex: Int)

TheHungryCub · Accepted Answer · 2017-05-31 10:36:32Z

For SWIFT 3

@IBAction func ForgotPassword(_ sender: Any) { let alertController = UIAlertController(title: "Email?", message: "Please input your email:", preferredStyle: .alert) let confirmAction = UIAlertAction(title: "Confirm", style: .default) { (_) in if let field = alertController.textFields![0] as? UITextField { // store and use entered data } else { print("please enter email id") } } let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (_) in } alertController.addTextField { (textField) in textField.placeholder = "Email" } alertController.addAction(confirmAction) alertController.addAction(cancelAction) self.present(alertController, animated: true, completion: nil) }

I hope it will help someone else :)

Darkngs · Accepted Answer · 2016-03-08 11:39:17Z

For iOS 8+ you should use UIAlertController instead of UIAlertView. To support iOS 7 you should implement (UIAlertViewDelegate):

func alertView(alertView: UIAlertView, clickedButtonAtIndex buttonIndex: Int) { //... let textField = alertView.textFieldAtIndex(0) }

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