IOS Helper Methods

iOS Helpers

// 1. UIView Border
extension UIView {
    func addBorder(edges: UIRectEdge, color: UIColor = .black, thickness: CGFloat = 1.0) {
        func borderView() -> UIView {
            let view = UIView(frame: .zero)
            view.translatesAutoresizingMaskIntoConstraints = false
            view.backgroundColor = color
            return view
        }
        if edges.contains(.top) || edges.contains(.all) {
            let topView = borderView()
            topView.tag = 10000
            self.addSubview(topView)
            self.addConstraints([
                NSLayoutConstraint(item: topView, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: topView, attribute: .left, relatedBy: .equal, toItem: self, attribute: .left, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: topView, attribute: .width, relatedBy: .equal, toItem: self, attribute: .width, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: topView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: thickness)
            ])
        }
        if edges.contains(.left) || edges.contains(.all) {
            let leftView = borderView()
            leftView.tag = 10001
            self.addSubview(leftView)
            self.addConstraints([
                NSLayoutConstraint(item: leftView, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: leftView, attribute: .left, relatedBy: .equal, toItem: self, attribute: .left, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: leftView, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: thickness),
                NSLayoutConstraint(item: leftView, attribute: .height, relatedBy: .equal, toItem: self, attribute: .height, multiplier: 1.0, constant: 0.0)
                ])
        }
        if edges.contains(.bottom) || edges.contains(.all) {
            let bottomView = borderView()
            bottomView.tag = 10002
            self.addSubview(bottomView)
            self.addConstraints([
                NSLayoutConstraint(item: bottomView, attribute: .bottom, relatedBy: .equal, toItem: self, attribute: .bottom, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: bottomView, attribute: .left, relatedBy: .equal, toItem: self, attribute: .left, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: bottomView, attribute: .width, relatedBy: .equal, toItem: self, attribute: .width, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: bottomView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: thickness)
            ])
        }
        if edges.contains(.right) || edges.contains(.all) {
            let rightView = borderView()
            rightView.tag = 10003
            self.addSubview(rightView)
            self.addConstraints([
                NSLayoutConstraint(item: rightView, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: rightView, attribute: .right, relatedBy: .equal, toItem: self, attribute: .right, multiplier: 1.0, constant: 0.0),
                NSLayoutConstraint(item: rightView, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: thickness),
                NSLayoutConstraint(item: rightView, attribute: .height, relatedBy: .equal, toItem: self, attribute: .height, multiplier: 1.0, constant: 0.0)
                ])
        }
    }
}

// 2. UIColor Hex
extension UIColor {
    convenience init(hex: String) {
        let hexString = hex.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
        var int = UInt32()
        Scanner(string: hexString).scanHexInt32(&int)
        let a, r, g, b: UInt32
        switch hexString.characters.count {
        case 3:
            (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
        case 6:
            (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
        case 8:
            (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
        default:
            (a, r, g, b) = (255, 0, 0, 0)
        }
        self.init(red: CGFloat(r) / 255, green: CGFloat(g) / 255, blue: CGFloat(b) / 255, alpha: CGFloat(a) / 255)
    }
}

// 3. String
extension String {
    func isValidEmailAddress() -> Bool {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
        let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
        return emailTest.evaluate(with: self)
    }
    func isArabic() -> Bool {
        let predicate = NSPredicate(format:"SELF MATCHES %@", "(?s).*\\p{Arabic}.*")
        return predicate.evaluate(with: self)
    }
    func hasArabicCharacters() -> Bool {
        return self.isArabic()
    }
}