ios - Swift iPad - 按钮不起作用

Question

我有 iPad 屏幕:

1) 按钮在改变位置时不可点击。2) 圆形按钮图像被拉伸(stretch)。

我需要创建下面屏幕中给出的按钮集。

我正在使用以下代码来创建按钮集。

class MyCommonViewController: UIViewController {

    var button: UIButton?
    var Circularbutton: UIButton?

override func viewDidLoad() {
        super.viewDidLoad()

        var xMargin:CGFloat = 20.0
        var yTopMargin:CGFloat = 40.0
        var CircularBtnxMargin:CGFloat = 180.0
        var CircularBtnyTopMargin:CGFloat = 200.0

        var i = 1     

        let TextArray = ["Button 1", "Button 2", "Button 3", "Button 4", "Button 5", "Button 6"]

        for index in 1...6
        {
            button = UIButton()
            button?.tag=index
            var buttonFrame = self.view.frame
            buttonFrame.origin.x += xMargin
            buttonFrame.origin.y += yTopMargin
            buttonFrame.size.width = 200
            buttonFrame.size.height = 200

            button?.frame = buttonFrame
            button?.layer.cornerRadius = 15.0            
            button?.layer.zPosition = 10

            button?.backgroundColor = UIColor.lightGrayColor()              

            button?.setTitle(TextArray[index-1], forState: UIControlState.Normal)            
            button?.addTarget(self, action: #selector(MyCommonViewController.BigButtonTouched), forControlEvents: UIControlEvents.TouchUpInside)

            self.view.addSubview(button!)


            Circularbutton = UIButton()
            var CbuttonFrame = self.view.frame           

            CbuttonFrame.origin = CGPoint(x:CircularBtnxMargin, y:CircularBtnyTopMargin)
            CbuttonFrame.size.width = 50
            CbuttonFrame.size.height = 50          

            Circularbutton?.frame = CbuttonFrame


            Circularbutton?.tag=index
            Circularbutton?.layer.zPosition = 100


            let image = UIImage(named: "que2.png") as UIImage?
            Circularbutton?.setImage(image, forState: UIControlState.Normal)
            Circularbutton?.addTarget(self, action: #selector(MyCommonViewController.questionButtonPressed), forControlEvents: UIControlEvents.TouchUpInside)


            self.view.addSubview(Circularbutton!)

            xMargin+=250.0
            CircularBtnxMargin+=250.0
            i+=1

            if(i > 3 )
            {
                yTopMargin+=300.0
                xMargin=20.0
                CircularBtnyTopMargin+=300.0
                CircularBtnxMargin=180.0
                i=1
            }
        }

    }

}

1) 但是除了前两个按钮之外，带问号的按钮是不可点击的。

2)我的第二个问题是圆形按钮图像显示粗糙不均匀的边框。

你能帮我一下吗？

编辑:

func questionButtonPressed(sender:UIButton!) {

let btn:UIButton = sender

print("Circular Button Pressed - \(btn.tag)")
}


func BigButtonTouched(sender:UIButton!) {

let bigBtn:UIButton = sender

print("Button Pressed - \(bigBtn.tag)")

}

Answer 1

在 for 循环的每次迭代中声明按钮，而不是在 for 循环之外声明按钮。查看代码(您需要删除所有强制展开):

class MyCommonViewController: UIViewController {

override func viewDidLoad() {
        super.viewDidLoad()

        var xMargin:CGFloat = 20.0
        var yTopMargin:CGFloat = 40.0
        var CircularBtnxMargin:CGFloat = 180.0
        var CircularBtnyTopMargin:CGFloat = 200.0

        var i = 1     

        let TextArray = ["Button 1", "Button 2", "Button 3", "Button 4", "Button 5", "Button 6"]

        for index in 1...6
        {
            let button = UIButton()
            button?.tag=index
            var buttonFrame = self.view.frame
            buttonFrame.origin.x += xMargin
            buttonFrame.origin.y += yTopMargin
            buttonFrame.size.width = 200
            buttonFrame.size.height = 200

            button?.frame = buttonFrame
            button?.layer.cornerRadius = 15.0            
            button?.layer.zPosition = 10

            button?.backgroundColor = UIColor.lightGrayColor()              

            button?.setTitle(TextArray[index-1], forState: UIControlState.Normal)            
            button?.addTarget(self, action: #selector(MyCommonViewController.BigButtonTouched), forControlEvents: UIControlEvents.TouchUpInside)

            self.view.addSubview(button!)


            let Circularbutton = UIButton()
            var CbuttonFrame = self.view.frame           

            CbuttonFrame.origin = CGPoint(x:CircularBtnxMargin, y:CircularBtnyTopMargin)
            CbuttonFrame.size.width = 50
            CbuttonFrame.size.height = 50          

            Circularbutton?.frame = CbuttonFrame


            Circularbutton?.tag=index
            Circularbutton?.layer.zPosition = 100


            let image = UIImage(named: "que2.png") as UIImage?
            Circularbutton?.setImage(image, forState: UIControlState.Normal)
            Circularbutton?.addTarget(self, action: #selector(MyCommonViewController.questionButtonPressed), forControlEvents: UIControlEvents.TouchUpInside)


            self.view.addSubview(Circularbutton!)

            xMargin+=250.0
            CircularBtnxMargin+=250.0
            i+=1

            if(i > 3 )
            {
                yTopMargin+=300.0
                xMargin=20.0
                CircularBtnyTopMargin+=300.0
                CircularBtnxMargin=180.0
                i=1
            }
        }

    }

}