swift 设置代理

import UIKit

// 设置代理

protocol SwiftNoDataShowViewDelegate  {

    func  selectMoreAddAvdio()    //代理方法

}

class  SwiftNoDataShowView:UIView {

    var delegate : SwiftNoDataShowViewDelegate?    //外部实现代理

    overrideinit(frame:CGRect) {

        super.init(frame: frame)

        self.addSubview(self.addButton);self.addSubview(self.lable)

        self.backgroundColor=UIColor.white

        self.isUserInteractionEnabled=true

    }

//懒加载设置的button

 lazy  var addButton :UIButton=

    {

        letaddButton =UIButton()

        addButton.setTitle("+ 添加音频", for: .normal)

        addButton.setTitleColor(ShowOtherColorType(value:252, value1:102, value2:32), for: .normal) //自定义颜色

        addButton.layer.masksToBounds=true

        addButton.layer.cornerRadius=10

        addButton.layer.borderColor=ShowOtherColorType(value:252, value1:102, value2:32).cgColor

        addButton.layer.borderWidth=1.5

        addButton.addTarget(self, action:#selector(onButtonClick), for: .touchUpInside)

       return addButton

    }()

  @objc  func onButtonClick()  {

    self.delegate?.selectMoreAddAvdio()  //代理方法

   }

    overridefunclayoutSubviews() {

        super.layoutSubviews()

        self.addButton.frame=CGRect(x:screenWidth/2.0-80, y:KScreenNewValueWidth(Value:150), width:160, height:40)

        self.lable.frame=CGRect(x:70, y:self.addButton.frame.maxY+30, width:screenWidth-140, height:60)

    }

    required init?(coder aDecoder:NSCoder) {

        fatalError()

    }

}