我希望我的iOS应用程序的背景颜色在x秒内在四种颜色之间切换
这就是我到目前为止(当我只指定2种颜色时,它正是我想要的)
我还需要动画无限循环运行.
ViewController.swift
UIView.animateWithDuration(X.0,animations: {
// Color 1
self.view.backgroundColor = UIColor(rgba)
// Color 2
self.view.backgroundColor = UIColor(rgba)
// Color 3
self.view.backgroundColor = UIColor(rgba)
// Color 4
self.view.backgroundColor = UIColor(rgba)
})
解决方法
试试这个：
UIView.animateWithDuration(1.0,animations: { () -> Void in
self.view.backgroundColor = UIColor.blackColor()
}) { (Bool) -> Void in
UIView.animateWithDuration(1.0,animations: { () -> Void in
self.view.backgroundColor = UIColor.greenColor()
},completion: { (Bool) -> Void in
UIView.animateWithDuration(1.0,animations: { () -> Void in
self.view.backgroundColor = UIColor.grayColor()
},completion: { (Bool) -> Void in
UIView.animateWithDuration(1.0,animations: { () -> Void in
self.view.backgroundColor = UIColor.redColor()
},completion:nil)
})
})
}
如果你想要一个连续的重复动画,试试这个：
UIView.animateWithDuration(2,delay: 0.0,options:[UIViewAnimationOptions.Repeat,UIViewAnimationOptions.Autoreverse],animations: {
self.view.backgroundColor = UIColor.blackColor()
self.view.backgroundColor = UIColor.greenColor()
self.view.backgroundColor = UIColor.grayColor()
self.view.backgroundColor = UIColor.redColor()
},completion: nil)
