我想用随机颜色为UIView的背景设置动画。这是我到目前为止所做的:importUIKitclassViewController:UIViewController{vartimer=NSTimer()varcolours=UIColor()overridefuncviewDidLoad(){super.viewDidLoad()getRandomColor()timerF()UIView.animateWithDuration(2,delay:0.0,options:[UIViewAnimationOptions.Repeat,UIViewAnimationOptions.Autore

我想用随机颜色为UIView的背景设置动画。这是我到目前为止所做的:importUIKitclassViewController:UIViewController{vartimer=NSTimer()varcolours=UIColor()overridefuncviewDidLoad(){super.viewDidLoad()getRandomColor()timerF()UIView.animateWithDuration(2,delay:0.0,options:[UIViewAnimationOptions.Repeat,UIViewAnimationOptions.Autore