本文介绍了如何使用swift设置不透明度动画?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有人可以给我提供一个示例,以动画方式快速显示图像视图吗?
Could someone please provide me with an example of animating the opacity of an Image View in swift??
我什至在物镜c中都找不到很好的例子
I couldn't even find a good example in objective c
func showCorrectImage(element: AnyObject){
var animation : CABasicAnimation = CABasicAnimation(keyPath: "opacity");
animation.delegate = self
animation.fromValue = NSValue(nonretainedObject: 0.0)
animation.toValue = NSValue(nonretainedObject: 1.0)
animation.duration = 1.0
element.layer?.addAnimation(animation, forKey: nil)
}
我想我拥有大部分的权利(虽然不确定),有人可以帮我吗?
I think I have most of this right (not completely sure though), could someone please help me?
element =图像视图
element = an Image View
谢谢!〜
推荐答案
如果您需要简单的动画,为什么不只使用UIView的 animateWithDuration:animations:
方法?
If you need a simple animation, why not just use UIView's animateWithDuration:animations:
method?
imageView.alpha = 0
UIView.animateWithDuration(1.0) {
imageView.alpha = 1
}
这篇关于如何使用swift设置不透明度动画?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!