自定义确定 UIButton

按钮工具类：

import UIKit

class MFConfirmButton: UIButton {

   override init(frame: CGRect) {
       super.init(frame: frame)
       layer.cornerRadius = 4
       clipsToBounds = true
       setTitleColor(UIColor.white, for: .normal)
       setTitleColor(UIColor.init(rgb: 0x555555), for: .highlighted)
       backgroundColor = UIColor(red: 210/255, green: 93/255, blue: 84/255, alpha:0xFF)
       self.frame = CGRect(x: 30, y: 10, width: MFVariables.kScreenWidth-60, height: 46)
   }
   required init?(coder aDecoder: NSCoder) {
       fatalError("init(coder:) has not been implemented")
   }

}

extension UIColor {
    convenience init(red: Int, green: Int, blue: Int) {
        assert(red >= 0 && red <= 255, "Invalid red component")
        assert(green >= 0 && green <= 255, "Invalid green component")
        assert(blue >= 0 && blue <= 255, "Invalid blue component")

        self.init(red: CGFloat(red) / 255.0, green: CGFloat(green) / 255.0, blue: CGFloat(blue) / 255.0, alpha: 1.0)
    }

    convenience init(rgb: Int) {
        self.init(
            red: (rgb >> 16) & 0xFF,
            green: (rgb >> 8) & 0xFF,
            blue: rgb & 0xFF
        )
    }
}

使用方法：

 let doneBtn = MFConfirmButton.init(frame: CGRect(x: 30, y: 10, width: cell.frame.size.width-60, height: cell.frame.size.height-20))
 doneBtn.setTitle("确 定", for: .normal)