swift 创建九宫格在后面加按钮

项目中的需求是前面图片，在图片最后面始终有按钮如图

图片

 

let space:CGFloat = 10

for i in 0..model.count{

           let itemWidth:CGFloat = 300

            let itemHeight:CGFloat =  50

           let x:CGFloat =  30+(itemWidth + space) * CGFloat(i%2)

            let y:CGFloat = 100+(itemHeight + space) * CGFloat(i/2)

            let button = CloseupButton.init(frame: CGRect(x: x, y: y, width: itemWidth, height: itemHeight))

            let datamodel = model[i]

            let date = String().Get_Reallocattime(time: datamodel.Spktestdate!)

            button.setTitle("\(date)", for: .normal)

            button.numLabel.text = "\(datamodel.element)/\(datamodel.denominator)"

            button.tag = i + 666

            if datamodel.denominator == datamodel.element{

                button.setImage(UIImage.init(named: "checkbox-checked"), for: .normal)

            }else{

                button.setImage(UIImage.init(named: "checkbox"), for: .normal)

            }

            button.imageEdgeInsets = UIEdgeInsetsMake(0, -170, 0, 0)

            button.titleEdgeInsets = UIEdgeInsetsMake(0, -160, 0, 0)

            button.addTarget(self, action: #selector(self.Select_Reallocationbutton(_:)), for: .touchUpInside)

            self.contentView.addSubview(button)

       let space:CGFloat = 10

        var x:CGFloat? = nil

        let itemWidth =  (self.ImagePhotoView.frame.size.width - space*5)/4

        if BackSelectModelAry.IamageAry.count != 0 {

            x =  (itemWidth + space) * CGFloat(2%4)

        }else{

            x = 5

        }

//        let x:CGFloat =  (itemWidth + space) * CGFloat(BackSelectModelAry.IamageAry.count%4)

//        let y:CGFloat =  (itemWidth + space) * CGFloat(BackSelectModelAry.IamageAry.count/4)

        let button = UIButton(frame: CGRect(x:x!, y:0, width:itemWidth, height: itemWidth))

        button.addTarget(self, action: #selector(eventAddImage), for: .touchUpInside)

        button.contentMode = .scaleAspectFill

        button.layer.borderWidth = 2

        button.layer.borderColor = PresentColor.cgColor

        button.setImage(UIImage(named: "image_select"), for: UIControlState.normal)

        self.ImagePhotoView.addSubview(button)

}