Swift：UIButton的动画宽度和高度

Question

在这两个函数中，我希望动画按钮缩小（消失），然后动画显示增长（看到）。我能够为它增长动画，但最初并没有缩小按钮。有关如何为缩小按钮设置动画的任何帮助吗？

func progressBarButtonFadeOut(){
    UIView.animateWithDuration(0.2, animations: {
    //timeCapDesign is a UIButton
        self.timeCapDesign.transform = CGAffineTransformMakeScale(0, 0)

    })
}

//Progress Bar Fade In Buttons
func progressBarButtonFadeIn(){
    UIView.animateWithDuration(0.2, animations: {

        self.timeCapDesign.transform = CGAffineTransformIdentity

    })
}

Answer 1

得到了它。所以我必须做的是：

func progressBarButtonFadeOut(){
UIView.animateWithDuration(0.2, animations: {
//timeCapDesign is a UIButton

    self.timeCapDesign.alpha = 0

    self.timeCapDesign.transform = CGAffineTransformMakeScale(0.1, 0.1)

})
}

//Progress Bar Fade In Buttons
func progressBarButtonFadeIn(){
UIView.animateWithDuration(0.2, animations: {

    self.timeCapDesign.alpha = 1

    self.timeCapDesign.transform = CGAffineTransformIdentity

})
}

所以最终缩小它我将它设置为CGAffineTransformMakeScale的值非常低（例如（0.1,0.1）），然后将alpha设置为0以使其缩小为无效。

Answer 2

＆＃34; 1＆＃34;的规模是当前大小，如果你想为它增长动画，那么这个数字应该大于1。

func progressBarButtonFadeOut(){
UIView.animateWithDuration(0.2, animations: {
//timeCapDesign is a UIButton
    self.timeCapDesign.transform = CGAffineTransformMakeScale(1.5, 1.5)

})

}