我有这个代码完美地为背景颜色设置动画:
UIView.animate(withDuration: 2, delay: 0.0, options:[UIViewAnimationOptions.repeat, UIViewAnimationOptions.autoreverse], animations: {
self.view.backgroundColor = UIColor(red: 0/255, green: 185/255, blue: 215/255, alpha: 1.0)
self.view.backgroundColor = UIColor(red: 0/255, green: 78/255, blue: 215/255, alpha: 1.0)
self.view.backgroundColor = UIColor(red: 0/255, green: 215/255, blue: 138/255, alpha: 1.0)
}, completion: nil)
但后来我尝试使用它来为标签的背景颜色设置动画,但是颜色较深,并且它不起作用:
UIView.animate(withDuration: 2, delay: 0.0, options:[UIViewAnimationOptions.repeat, UIViewAnimationOptions.autoreverse], animations: {
self.topBar.backgroundColor = UIColor(red: 0/255, green: 159/255, blue: 184/255, alpha: 1.0)
self.topBar.backgroundColor = UIColor(red: 0/255, green: 67/255, blue: 184/255, alpha: 1.0)
self.topBar.backgroundColor = UIColor(red: 0/255, green: 184/255, blue: 117/255, alpha: 1.0)
}, completion: nil)
是否有错误,或者我可以做些什么来动画标签的背景颜色?
答案 0 :(得分:2)
尝试动画layer.backgroundColor而不是backgroundColor
此代码适合我
UIView.animate(withDuration: 2, delay: 0.0, options:[UIViewAnimationOptions.repeat, UIViewAnimationOptions.autoreverse], animations: {
self.label.layer.backgroundColor = UIColor(red: 0/255, green: 185/255, blue: 215/255, alpha: 1.0).cgColor
self.label.layer.backgroundColor = UIColor(red: 0/255, green: 78/255, blue: 215/255, alpha: 1.0).cgColor
self.label.layer.backgroundColor = UIColor(red: 0/255, green: 215/255, blue: 138/255, alpha: 1.0).cgColor
}, completion: nil)