我正在尝试将值从 addKey 函数传递到 Selector 函数(didTapAny 函数)，但不知道如何传递。下面是我的代码:
var keyName: UIButton!
func addKey(var keyTitle: String, var yValue: Float32){
keyName = UIButton.buttonWithType(.System) as UIButton
keyName.setTitle(keyTitle, forState: .Normal)
keyName.sizeToFit()
keyName.setTranslatesAutoresizingMaskIntoConstraints(false)
// Couldn't figure how to pass parameter value to Selector at this line
// action: Selector("didTapAny:")
keyName.addTarget(self, action: "didTapAny", forControlEvents: .TouchUpInside)
keyName.titleLabel.font = UIFont.systemFontOfSize(24)
keyName.backgroundColor = UIColor(white: 0.9, alpha: 9)
keyName.layer.cornerRadius = 5
view.addSubview(keyName)
var keyNameButtonLeftSideConstraint = NSLayoutConstraint(item: keyName, attribute: .CenterY, relatedBy: .Equal, toItem:view, attribute:.CenterY, multiplier: 1.0, constant: 0.0)
var keyNameButtonBottomConstraint = NSLayoutConstraint(item: keyName, attribute: .CenterX, relatedBy: .Equal, toItem: view, attribute: .CenterX, multiplier: 1.0, constant: yValue)
view.addConstraints([keyNameButtonLeftSideConstraint, keyNameButtonBottomConstraint])
}
// want to pass above function's keyTitle to this function
func didTapAny(keyTitle: String){
var proxy = textDocumentProxy as UITextDocumentProxy
proxy.insertText(keyTitle)
}
谢谢。
最佳答案
// want to pass above function's keyTitle to this function
func didTapAny(keyTitle: String){
您不能将您想要的任何内容传递给按钮操作方法。该方法将接收对按钮的引用，您可以访问其 currentTitle 属性。它更像是:
func didTapAny(sender: UIButton) {
// use here sender.currentTitle
}
关于ios - Swift:将参数值传递给选择器函数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24506979/