xcode - 标签消失后将其移除

Question

我在这里有这段代码，我在其中显示标签，让它消失(直到这里)，然后我想删除它。一切正常，直到我想删除它。我需要将其删除，以便我可以再次运行整个过程。这是我的代码:

        view.addSubview(minusLabel)
        UIView.animateWithDuration(1.0, delay: 0.0, options: UIViewAnimationOptions.CurveEaseIn, animations: {
            self.minusLabel.alpha = 0
            }, completion: {
                (finished: Bool) -> Void in
                self.minusLabel.removeFromSuperview()
        }
        )

Answer 1

您不需要删除标签来重复动画，而是尝试此代码，并根据您的喜好进行修改:

        func animate() {

            UIView.animateWithDuration(1.0, animations: {
            self.label.alpha = 1.0
            //label is the name of your label which you have defined/created

                }, completion: {
                    (Completed: Bool) -> Void in

                    UIView.animateWithDuration(1.0, delay: 0, options: UIViewAnimationOptions.CurveLinear, animations: {

                        self.label.alpha = 0
                        //label is the name of your label which you have defined/created

                        }, completion: {
                            (Completed: Bool) -> Void in

                            self.animate()
            })

            })

        }

每当您想调用此函数时，请使用 animate() 并在其下方添加 label.alpha = 0 (将 label 更改为您的标签名称)。来源:https://www.youtube.com/watch?v=iyg3u3z_fKI