Question

我写了一个函数来翻转视图。在动画期间，我想要隐藏一个视图并显示其他视图。

这不起作用。但是如果我在转换完成后尝试移动此视图，它会向我显示我所需的结果。

以下是我写的代码。

func tapped() {
    if (showingBack) {
        UIView.transitionWithView(self.contentView!, duration: 1, options: .TransitionFlipFromRight, animations: {
            self.contentView?.viewWithTag(1)?.hidden = false
            self.contentView?.viewWithTag(2)?.hidden = true
        }, completion: { complete in
        })

     } else {


        UIView.transitionWithView(self.contentView!, duration: 1, options: .TransitionFlipFromRight, animations: {
            self.contentView?.viewWithTag(1)?.hidden = true
            self.contentView?.viewWithTag(2)?.hidden = false
        }, completion: { complete in
        })
    }

    showingBack = !showingBack

}

Answer 1

不幸的是，隐藏不是通过UIView动画可动画的属性。我认为你最好的选择可能是使用淡入淡出，翻转等，或者开始涉足更强大的核心动画。看一下UIView动画和核心动画的文档。

UIView.animateWithDuration(0.7, delay: 1.0, options: UIViewAnimationCurveEaseOut, animations: {
                        self.myView.frame = /* set the frame here */
  }, completion: { finished in
println("Done!")
  })

Answer 2

试试这段代码......

 func tapped() {
        if (showingBack) {
            UIView.transitionWithView(self.contentView!, duration: 1, options: .TransitionFlipFromRight, animations: {
                self.contentView?.alpha = 1.0
                self.Contentview2?.alpha = 0.0
                }, completion: { complete in

            })

        } else {


            UIView.transitionWithView(self.Contentview2!, duration: 1, options: .TransitionFlipFromRight, animations: {
                self.contentView?.alpha = 0.0
                self.Contentview2?.alpha = 1.0
                }, completion: { complete in

            })
        }

        showingBack = !showingBack

    }

转化期间未隐藏/显示的子视图

2 个答案: