UIView+Border.swift

import UIKit

extension UIView {
    func addBorderViews(top: Bool = false, left: Bool = false, bottom: Bool = false, right: Bool = false, color: UIColor = .black, width: CGFloat = 1.0) {
        if top {
            let borderView = UIView()
            borderView.translatesAutoresizingMaskIntoConstraints = false
            addSubview(borderView)
            borderView.topAnchor.constraint(equalTo: topAnchor).isActive = true
            borderView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
            borderView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
            borderView.heightAnchor.constraint(equalToConstant: width).isActive = true
            borderView.backgroundColor = color
        }
        if left {
            let borderView = UIView()
            borderView.translatesAutoresizingMaskIntoConstraints = false
            addSubview(borderView)
            borderView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
            borderView.topAnchor.constraint(equalTo: topAnchor).isActive = true
            borderView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
            borderView.widthAnchor.constraint(equalToConstant: width).isActive = true
            borderView.backgroundColor = color
        }
        if bottom {
            let borderView = UIView()
            borderView.translatesAutoresizingMaskIntoConstraints = false
            addSubview(borderView)
            borderView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
            borderView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
            borderView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
            borderView.heightAnchor.constraint(equalToConstant: width).isActive = true
            borderView.backgroundColor = color
        }
        if right {
            let borderView = UIView()
            borderView.translatesAutoresizingMaskIntoConstraints = false
            addSubview(borderView)
            borderView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
            borderView.topAnchor.constraint(equalTo: topAnchor).isActive = true
            borderView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
            borderView.widthAnchor.constraint(equalToConstant: width).isActive = true
            borderView.backgroundColor = color
        }
    }
}