ios - UIButton touchDragInside不起作用

我有一个按钮，每次尝试拖动时都想移动它，然后每次点击时都移动一个segue。对于拖动，我已经放置了该方法：

skillsButtonReal.addTarget(self, action: #selector(ViewController.wasDragged(_:event:)), forControlEvents: UIControlEvents.TouchDragInside)

func wasDragged (buttn : UIButton, event :UIEvent)
{

    let buttonView = buttn as UIView;
    let touches : Set<UITouch> = event.touchesForView(buttonView)!
    let touch = touches.first!
    let location = touch.locationInView(buttonView)

    let previousLocation : CGPoint = touch .previousLocationInView(buttonView)
    let delta_x :CGFloat = location.x - previousLocation.x
    let delta_y :CGFloat = location.y - previousLocation.y
    buttn.center = CGPointMake(buttn.center.x + delta_x,
                               buttn.center.y + delta_y);

}

正在调用，但不会移动。我还需要放置或调用什么？

最佳答案

我认为这可能对您有用：

var panGesture: UIPanGestureRecognizer = UIPanGestureRecognizer(target: self, action: Selector("recognizePanGesture:"))
panGesture.minimumNumberOfTouches = 1
panGesture.maximumNumberOfTouches = 1
buttonView.addGestureRecognizer(panGesture)

func recognizePanGesture(sender: UIPanGestureRecognizer)
{
  var translate = sender.translationInView(self.view)
  sender.view!.center = CGPoint(x:sender.view!.center.x + translate.x,
  y:sender.view!.center.y + translate.y)
  sender.setTranslation(CGPointZero, inView: self.view)
}

关于ios - UIButton touchDragInside不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/36506391/