Add bottom line to view in SwiftUI / Swift / Objective-C / Xamarin

Question

I would like to keep the border at the bottom part only in UITextField. But I don\'t know how we can keep it on the bottom side.

Can you please advise m

Answer 1

Updated Code:

Swift 5.0

extension UITextField {
  func addUnderline() { 
   let layer = CALayer()
   layer.backgroundColor = #colorLiteral(red: 0.6666666865, green: 0.6666666865, blue: 0.6666666865, alpha: 1)
   layer.frame = CGRect(x: 0.0, y: self.frame.size.height - 1.0, width: self.frame.size.width, height: 1.0)
   self.clipsToBounds = true
   self.layer.addSublayer(layer)
   self.setNeedsDisplay()} }

Now call this func in viewDidLayoutSubviews()

override func viewDidLayoutSubviews() {
    textField.addUnderline()
}

NOTE: This method will only work in viewDidLayoutSubviews()