How to unclear UITextField secure text entry in Swift?

Question

When I use default Security text Entry in UITextField in Swift Language after type type text once UITextField.

Once loss focus from UITextField after try to edit Secure text then UITextField is first reset and after it start put new text in UITextField.

How to edit old Secure Text without Storing data into Any Kind of String object

Answer 1

I'd suggest to create a custom UITextField class and override become​First​Responder() method do add your desired functionality:

You can override this method in your custom responders to update your object's state or perform some action such as highlighting the selection. If you override this method, you must call super at some point in your implementation.

The custom Class should be similar to:

class CustomSecureTextField: UITextField {
    override func becomeFirstResponder() -> Bool {
        super.becomeFirstResponder()

        if !isSecureTextEntry { return true  }

        if let currentText = text { insertText(currentText) }

        return true
    }
}

The logic of the implementation of becomeFirstResponder as follows:

By default, the secured-entry text field clears the inserted text when it is become first responder text, so what's happening in CustomSecureTextField that if the text field is secured-entry, it will re-insert the current inserted text -after clearing it-, but you have to make sure that the text field input is secured (that's the purpose of adding if !isSecureTextEntry { return true } ) or the text will be duplicated (re-inserted) each time the text field becomes first responder.

Output:

Note that both of text fields are types of CustomSecureTextField :

Answer 2

This answer helped me to figure out this problem.

   textField.isSecureTextEntry = true 

following property not gonna work if you make testField isSecureTextEntrysecure property makes true .

   textField.clearsOnBeginEditing = false

Answer 3

There is an issue with the @Ahmd F solution when you simply tap on the field it will automatically add the text to the field I have resolved that in the below code thanks

override open func becomeFirstResponder() -> Bool {
    super.becomeFirstResponder()
    if !isSecureTextEntry { return true}
    if let currrentText = text {
        self.text = ""
        insertText(currrentText)
    }
    return true
}