Question

我使用Swift 2和Xcode 7.1

我想知道如何执行嵌套动画？其实我想要的是，它会逐渐改变我视线的颜色。视图将：红色 - ＆gt;蓝色 - ＆gt;绿色 - ＆gt;红色 - ＆gt; ...

这是我的代码：

func animate(){
    UIView.animateWithDuration(1.0, animations: {
        //self.lbl.transform = CGAffineTransformMakeRotation(0.5)
        self.circle.backgroundColor = UIColor(red: 0.93, green: 0.89, blue: 0.27, alpha: 1)
        }, completion: {
            (value: Bool) in
            UIView.animateWithDuration(1.0, animations: {
                //self.lbl.transform = CGAffineTransformMakeRotation(0.5)
                self.circle.backgroundColor = UIColor(red: 0.3, green: 0.2, blue: 0.7, alpha: 1)
                }, completion: {
                    (value: Bool) in
                    self.animate()
            })
    })
}

Answer 1

对于动画的嵌套，您应该使用UIView.animateWithDuration Repeat Autoreverse的选项，在这种情况下UIView.animateWithDuration(2.0, delay:0, options: [.Repeat, .Autoreverse], animations: { //execute animation changes hear }, completion: nil)

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UIView的动画颜色

1 个答案: