Question

我有一个UIView，它会在按下按钮时向下滑动，然后在另一个按钮上向上滑动。它完全向下滑动，但是当我尝试点击合约按钮时，我无法单击它，但它会单击视图下方的集合视图单元格。我无法弄清楚为什么它会正常滑下，但它不能发挥我的预期效果。非常感谢！

@IBAction func onExpandButtonPressed(sender: UIButton) {
      let xPosition = expandingView.frame.origin.x

      //View will slide to 40 px higher bottom of the screen
      let yPosition = expandingView.frame.maxY - 40

      let height = expandingView.frame.size.height
      let width = expandingView.frame.size.width

      UIView.animateWithDuration(0.5, animations: {

         self.expandingView.frame = CGRectMake(xPosition, yPosition, height, width)
         self.expandButton.hidden = true
         self.contractButton.hidden = false
      })
   }

   @IBAction func onContractButtonPressed(sender: UIButton) {

      let xPosition = expandingView.frame.origin.x
      let yPosition = expandingView.frame.origin.y

      let height = expandingView.frame.size.height
      let width = expandingView.frame.size.width

      UIView.animateWithDuration(1.0, animations: {

         self.expandingView.frame = CGRectMake(xPosition, yPosition, height, width)
         self.expandButton.hidden = false
         self.contractButton.hidden = true
      })
   }

Answer 1

也许是因为视图已经滑过按钮。因此，尝试在按钮操作中使用以下内容，该操作将滑过非工作按钮：

self.view.bringSubViewToFront(buttonName)

如果在按钮Action中放置一个NSLog，它可以帮助确定是否正在调用该函数。

向下滑动UIView然后再向上滑动

1 个答案: