Swift textfields without border - ios

Question

I am new to swift. Your help will be really appreciated.
I have two textfields in my application. How would I create same UI as given in the pic below.
I want to create textfields with only one below border as given in the screenshot.
https://www.dropbox.com/s/wlizis5zybsvnfz/File%202017-04-04%2C%201%2052%2024%20PM.jpeg?dl=0

Answer 1

#IBOutlet var textField: UITextField! {
didSet {
let border = CALayer()
let width: CGFloat = 1 // this manipulates the border's width
border.borderColor = UIColor.darkGray.cgColor
border.frame = CGRect(x: 0, y: textField.frame.size.height - width,
width: textField.frame.size.width, height: textField.frame.size.height)
border.borderWidth = width
textField.layer.addSublayer(border)
textField.layer.masksToBounds = true
}
}

Answer 2

Create a subclass of UITextField so you can reuse this component across multiple views without have to re implement the drawing code. Expose various properties via #IBDesignable and #IBInspectable and you can have control over color and thickness in the story board. Also - implement a "redraw" on by overriding layoutSubviews so the border will adjust if you are using auto layout and there is an orientation or perhaps constraint based animation. That all said - effectively your subclass could look like this:
import UIKit
class Field: UITextField {
private let border = CAShapeLayer()
#IBInspectable var color: UIColor = UIColor.blue {
didSet {
border.strokeColor = color.cgColor
}
}
#IBInspectable var thickness: CGFloat = 1.0 {
didSet {
border.lineWidth = thickness
}
}
override func draw(_ rect: CGRect) {
self.borderStyle = .none
let from = CGPoint(x: 0, y: rect.height)
let here = CGPoint(x: rect.width, y: rect.height)
let path = borderPath(start: from, end: here).cgPath
border.path = path
border.strokeColor = color.cgColor
border.lineWidth = thickness
border.fillColor = nil
layer.addSublayer(border)
}
override func layoutSubviews() {
super.layoutSubviews()
let from = CGPoint(x: 0, y: bounds.height)
let here = CGPoint(x: bounds.width, y: bounds.height)
border.path = borderPath(start: from, end: here).cgPath
}
private func borderPath(start: CGPoint, end: CGPoint) -> UIBezierPath {
let path = UIBezierPath()
path.move(to: start)
path.addLine(to: end)
return path
}
}
Then when you add a text field view to your story board - update the class in the Identity Inspector to use this subclass, Field - and then in the attributes inspector, you can set color and thickness.

Answer 3

Add border at Bottom in UITextField call below function:
func setTextFieldBorder(_ dimension: CGRect) -> CALayer {
let border = CALayer()
let width = CGFloat(2.0)
border.borderColor = UIColor.darkGray.cgColor
border.frame = CGRect(x: 0, y: dimension.size.height - width, width: dimension.size.width, height: dimension.size.height)
border.borderWidth = width
return border
}
How to set UITextField border in textField below sample code for that:
txtDemo.layer.addSublayer(setTextFieldBorder(txtDemo.frame))
txtDemo.layer.masksToBounds = true
Where txtDemo is IBOutlet of UITextField.