Swift 2-for循環創建多個UIButton

Question

我有一個for循環，該循環創建多個按鈕，具體取決於如何注冊用戶。

按鈕創建良好，我向按鈕添加了一個目標，該目標需要打印已按下哪個按鈕以傳遞值。

到目前為止，我有：

func loadUserVideos() {

        let userVideoNames = ["andrew", "john", "verya", "patry", "gabriy"]

        let countUserNames = userVideoNames.count - 1

        for index in 0...countUserNames {

            //print("\(index) times 5 is \(index * 5)")

            //UIBUTTON PLAY VIDEO USER
            let customButtonPlayVideoUser = UIButton(frame: CGRectMake(145, 32, 64, 64))
            let imageCustomUserBtn = UIImage(named: "video-play.png") as UIImage?
            customButtonPlayVideoUser.setImage(imageCustomUserBtn, forState: .Normal)
            customButtonPlayVideoUser.addTarget(self, action: "CustomUserVideobtnTouched:", forControlEvents:.TouchUpInside)
            customViewUser.addSubview(customButtonPlayVideoUser)


        }

    }

    func CustomUserVideobtnTouched(sender: UIButton, index: Int){

        print(index)
    }

如何將值傳遞給動作函數，以便應用程序可以查看已按下哪個按鈕？

Answer 1

您可以使用標簽值：

       for index in 0...countUserNames {

            //print("\(index) times 5 is \(index * 5)")

            //UIBUTTON PLAY VIDEO USER
            let customButtonPlayVideoUser = UIButton(frame: CGRectMake(145, 32, 64, 64))
            let imageCustomUserBtn = UIImage(named: "video-play.png") as UIImage?
            customButtonPlayVideoUser.setImage(imageCustomUserBtn, forState: .Normal)
            customButtonPlayVideoUser.addTarget(self, action: "CustomUserVideobtnTouched:", forControlEvents:.TouchUpInside)
            customViewUser.addSubview(customButtonPlayVideoUser) 

            /// set tag
            customButtonPlayVideoUser.tag = index
        }

接着

    func CustomUserVideobtnTouched(sender: UIButton){

        print(sender.tag)
    }

Answer 2

您可以將索引設置為按鈕標簽屬性，並在選擇器方法中獲取類似的索引，

sender.tag