ios - Swift 2.0 Beta试图使UITextview能够被拖动

Question

我收到此错误消息:“-[UITextView labelDragged:]:无法识别的选择器已发送到实例0x7a2bf400”
这是我的代码:

var upperText:UITextView = UITextView()
 var lowerText:UITextView = UITextView()
private func addGestureRecognizers(){  
       let drag1 = UIPanGestureRecognizer(target: upperText,action: Selector("labelDragged:"))
        let drag2 = UIPanGestureRecognizer(target: lowerText, action: Selector("labelDragged:"))
        view.addGestureRecognizer(drag1)
        view.addGestureRecognizer(drag2)
    }
func  labelDragged(sender : AnyObject?) {
        let gesture:UIPanGestureRecognizer = sender as! UIPanGestureRecognizer
        let textView:UITextView = gesture.view as! UITextView
        let translation:CGPoint = gesture.translationInView(textView)
        textView.center = CGPointMake(textView.center.x, textView.center.y + translation.y)
        gesture.setTranslation(CGPointZero, inView: textView)
    }

这是我第一次发帖，请帮忙。
谢谢。

Answer 1

您将必须将目标设置为self:

target: self