Ios UIView animateWithDuration太快
我使用了Ios UIView animateWithDuration太快,ios,swift,uiview,swift2,animatewithduration,Ios,Swift,Uiview,Swift2,Animatewithduration,我使用了UIViewanimateWithDuration来增加下面代码中的shapeLayer.frame.size.height,但不管动画的持续时间如何,它都非常快。我发现有几篇帖子建议使用一些我已经做过的延迟时间,但是它仍然非常快,忽略了我设置的5秒持续时间 private let minimalHeight: CGFloat = 50.0 private let shapeLayer = CAShapeLayer() override func loadView() { su
UIView
animateWithDuration
来增加下面代码中的shapeLayer.frame.size.height
,但不管动画的持续时间如何,它都非常快。我发现有几篇帖子建议使用一些我已经做过的延迟时间,但是它仍然非常快,忽略了我设置的5秒持续时间
private let minimalHeight: CGFloat = 50.0
private let shapeLayer = CAShapeLayer()
override func loadView() {
super.loadView()
shapeLayer.frame = CGRect(x: 0.0, y: 0.0, width: view.bounds.width, height: minimalHeight)
shapeLayer.backgroundColor = UIColor(red: 57/255.0, green: 67/255.0, blue: 89/255.0, alpha: 1.0).CGColor
view.layer.addSublayer(shapeLayer)
}
func delay(delay:Double, closure:()->()) {
dispatch_after(
dispatch_time(
DISPATCH_TIME_NOW,
Int64(delay * Double(NSEC_PER_SEC))
),
dispatch_get_main_queue(), closure)
}
override func viewDidAppear(animated: Bool) {
delay(3) {
UIView.animateWithDuration(5.0) {
self.shapeLayer.frame.size.height += 400.0
}
}
如何使动画在5秒内完成?试试:
override func viewDidAppear(_ animated: Bool) {
//You should not edit directly the frame here, or the change will be committed ASAP. Frame does not act like constraints.
// create the new frame
var newFrame = self.shapeLayer.frame
newFrame.size.height += 400.0
UIView.animate(withDuration: 5.0, delay: 3.0, options: .curveEaseOut, animations: {
//assign the new frame in the animation block
self.shapeLayer.frame = newFrame
}, completion: { finished in
})
}
也许你应该试试
cabasicanition
let fromValue = view2.layer.bounds.height
let toValue = view2.layer.bounds.height + 50
CATransaction.setDisableActions(true) //Not necessary
view2.layer.bounds.size.height = toValue
let positionAnimation = CABasicAnimation(keyPath:"bounds.size.height")
positionAnimation.fromValue = fromValue
positionAnimation.toValue = toValue
positionAnimation.duration = 1
view2.layer.addAnimation(positionAnimation, forKey: "bounds")
它适用于我,参考:在我的情况下,问题是代码中的其他地方动画被禁用:
[UIView SetAnimationEnabled:false]代码>
将此更改为true解决了以下问题:
[UIView SetAnimationEnabled:true]代码>我尝试了上面的代码,但动画仍然非常快动画非常快或没有动画?基本上,在不到一秒钟的时间内,它从原始位置移动到预期位置。这就是为什么我说动画非常快,也许解决方案就在这里。链接中的第二种方法是我一开始所做的。谢谢,它是有效的,但我真的想知道为什么animateWithDuration
不起作用。因为您使用的是适用于UIView的动画方法。您正在尝试制作一个较低级别组件的CALayer witch动画。如果您能帮我看一下这个问题,我将非常感激,因为我还没有在这方面取得任何进展