ios - Swift UIButton addTarget 自动启动

Question

我在 UIButton 中的 addTarget 有点问题。当我运行我的应用程序时，我的功能会自动启动，而他需要按 UIButton 才能启动。我不知道我的问题在哪里。

我的按钮

let BTN_happy : UIButton = UIButton()
    BTN_happy.frame = CGRectMake(0, rowHeight * 1, fullWidth, rowHeight)
    BTN_happy.backgroundColor = UIColor(hexString: "#ff3b30")
    BTN_happy.addTarget(self, action: Selector(data("Happy")), forControlEvents: .TouchUpInside)

    self.view.addSubview(BTN_happy)
    text("Happy", button: BTN_happy)

我的函数

func text(text: String, button: UIButton) {

        let txt : UILabel = UILabel()
        txt.text = text.uppercaseString
        txt.frame = CGRectMake(20, 0, fullWidth - 40, button.bounds.size.height)
        txt.textColor = UIColor(hexString: "#ffffff")
        txt.font = UIFont.systemFontOfSize(30, weight: UIFontWeightHeavy)
        txt.shadowOffset = CGSize(width: 2, height: 2)
        txt.shadowColor = UIColor(hexString: "#000000", alpha: 0.3)

        button.addSubview(txt)

    }

    func data(mood: String) {
        NSLog("Mood: \(mood)")
    }

预先感谢您的回复。

Answer 1

您不能像那样添加选择器。您需要将其更改为:

myBTN.addTarget(self, action: Selector("data:"), forControlEvents: .TouchUpInside)

同时更改方法签名，如:

func data(sender: UIButton)
{
   NSLog("Button clicked")
}