Designable_Bordered_Button.swift

import UIKit

@IBDesignable
class BorderedButton: UIButton {
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.setup()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.setup()
    }
    
    override var tintColor: UIColor! {
        get {
            return super.tintColor
        }
        set(newValue) {
            super.tintColor = newValue
            
            layer.borderColor = tintColor.cgColor
          
            setTitleColor(tintColor, for: .normal)
            setTitleColor(tintColor, for: .highlighted)
        }
    }
    
    private func setup() {
        
        layer.borderWidth = 1.0
        layer.borderColor = tintColor.cgColor
        layer.cornerRadius = 5.0
        
        clipsToBounds = true
        contentEdgeInsets = UIEdgeInsets(top: 8, left: 8, bottom: 8, right: 8)
        imageEdgeInsets = UIEdgeInsets(top: 1, left: 8, bottom: 8, right: 1)
        
        setTitleColor(tintColor, for: .normal)
        setTitleColor(tintColor, for: .highlighted)
    }
}