UITextField in UIAlertController (border, backgroundColor)

Question

Here is a screenshot of a UIAlertController. I was just playing around custom fonts and textfield properties but I was unable to accomplish the fol

Answer 1

Swift 3 clear version

alertController.textFields?.forEach {
    $0.superview?.backgroundColor = .clear
    $0.superview?.superview?.subviews[0].removeFromSuperview()
}

Answer 2

Swift 2.0 version:

for textField in alert.textFields! {
    if let container = textField.superview, let effectView = container.superview?.subviews.first where effectView is UIVisualEffectView {
       container.backgroundColor = UIColor.clearColor()
       effectView.removeFromSuperview()
    }
}