Replacing image in clear button

Default clear button

To change default clear button icon, you have to create binding to your text field and then pass the following lines of code:

if let clearButton = someTextField.value(forKeyPath: "_clearButton") as? UIButton {
            clearButton.setImage(UIImage(named:"image_name"), for: .normal)
        }

To change size of the icon you can upload to the project the image with the appropriate size.

Changed clear button