UIPanGestureRecognizer 中的 Swift 获取按钮标题答案

【问题标题】：Swift Get Button title in UIPanGestureRecognizerUIPanGestureRecognizer 中的 Swift 获取按钮标题
【发布时间】：2014-12-12 21:25:20
【问题描述】：

我通过这个函数在我的视图中创建了我的各种按钮，当 UIPanGestureRecognizer 以防万一时。更改：我想获取按钮的标题

    var searchIndex:Int!

    func CreateButtonWithIndex(index:Int) {

    let newButton = UIButton.buttonWithType(UIButtonType.System) as UIButton
    newButton.setTitle("Button \(index+1)", forState: UIControlState.Normal)
    newButton.tag = index+1;

//Mark: - UIPanGesture
    var pan = UIPanGestureRecognizer(target:self, action:"pan:")
    pan.maximumNumberOfTouches = 1
    pan.minimumNumberOfTouches = 1
    newButton.addGestureRecognizer(pan)
    self.searchIndex = pan.view?.tag
    self.view.addSubview(newButton)
}

//Mark: - pan

func pan(rec:UIPanGestureRecognizer) {

    var p:CGPoint = rec.locationInView(self.view)

    var center:CGPoint = CGPointZero

    switch rec.state {
    case .Began:
        println("began")
        selectedView = view.hitTest(p, withEvent: nil)
        if selectedView != nil {
           self.view.bringSubviewToFront(selectedView!)
        }

    case .Changed:
          let subviews = self.view.subviews as [UIView]
            for v in subviews {
                if let button = v as? UIButton {
                   if button.tag == self.searchIndex {
                                println("\(button.titleLabel!.text)")
                               }}}

等等...
我正在尝试以这种方式获取按钮的名称，但我没有按钮的真实标题

【问题讨论】：

标签： swift uibutton ios8 uipangesturerecognizer

【解决方案1】：

UIGestureRecognizer 有一个属性view，这是它所附加的视图。您可以使用它来获取按钮，然后查询按钮的标题：

func pan(rec:UIPanGestureRecognizer) {
    if let button = rec.view as? UIButton {
        if let title = button.titleForState(.Normal) {
            println(title)
        }
    }
}

【讨论】：