CODEWITHSUNDEEP
iosswiftuibuttonuitextfield
Chris
Chris

Reputation: 2274

Check if UITextfield is active

The problem is that the "Eye Button" should only be displayed while the Textfield is selected. I have tried it with "isFirstResponder" but that doesn't seem to be working. Any ideas how to handle this? In the picture down below the textfield is not selected.

Update

The delegate function "password did change" works fine. The only thing I need is that the button should hide if the textfield is not selected anymore. Adding the delegate functions "beging" or "endEditing" doesn't work. It just causes another fail where the text gets deleted if the user types something in, deselects the textfield and selects it back again. 

@IBAction func passwordDidChange(_ sender: Any) {
    if self.passwordTextField.text == "" && self.passwordTextField.isFirstResponder != true{
        self.eyeOpenButton.isHidden = true
    }else {
        self.eyeOpenButton.isHidden = false
    }

enter image description here

Upvotes: 0

Views: 854

Answers (2)

chirag90
chirag90

Reputation: 2240

You could try something like this.

class ViewController: UIViewController, UITextFieldDelegate {

    @IBOutlet weak var passwordTextField: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
        self.eyeOpenButton.isHidden = true
        passwordTextField.delegate = self
    }

    // calls when textfield becomes 1st responder
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        switch textField {
        case passwordTextField:

            if passwordTextField.text != "" {
                self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            } else {
                self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            }

            break
        default:
            break
        }
        return true
    }

    //Calls when the text fields resigns first responder
    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {

        if textField == passwordTextField {
            if passwordTextField.text != "" {
                self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            } else {
                self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            }
        }
        return true
    }

    // Check all the input user has with the keyboard.
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        if let passwordTextField = passwordTextField {

            if passwordTextField.text?.count ?? 0 > 0 {
                self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            }

            if passwordTextField.text?.count == 0 {
                 self.eyeOpenButton.isHidden = !self.eyeOpenButton.isHidden
            }
        }

        return true
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        for textField in self.view.subviews where textField is UITextField {
            textField.resignFirstResponder()
        }
        return true
    }
}

Upvotes: 2

Sanoj Kashyap
Sanoj Kashyap

Reputation: 5060

You need to handle this in UITextfieldDelegate method. Implement those methods and listen to changes and act accordingly.

Upvotes: 0

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