swift中的动画

UIView的通用动画

let view = UIView(frame: CGRectMake(10.0,10.0,100.0,40.0))
self.view.addSubview(view)
view.backgroundColor = UIColor.lightGrayColor()
// 位置改变
var frame = view.frame
UIView.animateWithDuration(0.6,delay: 2.0,options: UIViewAnimationOptions.CurveEaseInOut,animations: {
            () -> Void in

            frame.origin.x = 200.0
            view.frame = frame

            }) {
                (finished:Bool) -> Void in

                UIView.animateWithDuration(0.6) {
                    () -> Void in

                    frame.origin.x = 10.0
                    view.frame = frame
                }
}

CABasicAnimation核心动画
1、CABasicAnimation类只有三个属性：
fromValue：开始值
toValue：结束值
Duration：动画的时间
repeatCount：重复次数

2、通过animationWithKeyPath键值对的方式设置不同的动画效果
transform.scale
transform.scale.x
transform.scale.y
transform.rotation.z
opacity
margin
zPosition
backgroundColor
cornerRadius
borderWidth
bounds
contents
contentsRect
cornerRadius
frame
hidden
mask
masksToBounds
opacity
position
shadowColor
shadowOffset
shadowOpacity
shadowRadius

let view = UILabel(frame: CGRectMake((self.view.frame.size.width - 200.0) / 2,200.0,40.0))
self.view.addSubview(view)
view.text = "缩放/淡入淡出"
view.textAlignment = .Center
view.adjustsFontSizeToFitWidth = true
view.backgroundColor = UIColor.lightGrayColor()
//
let layer = view.layer
// 开始动画
// 缩放
let scaleAnimate = CABasicAnimation(keyPath: "transform.scale")
scaleAnimate.fromValue = 1.0
scaleAnimate.toValue = 1.5
scaleAnimate.autoreverses = true
scaleAnimate.repeatCount = MAXFLOAT
scaleAnimate.duration = 1.0
// 淡入淡出
let opaqueAnimate = CABasicAnimation(keyPath: "opacity")
opaqueAnimate.fromValue = 0.1
opaqueAnimate.toValue = 1
opaqueAnimate.autoreverses = true
opaqueAnimate.repeatCount = MAXFLOAT
opaqueAnimate.duration = 1.0
layer.addAnimation(scaleAnimate,forKey: "scaleAnimate")
layer.addAnimation(opaqueAnimate,forKey: "opacityAnimate")

// 组合动画
let view3 = UILabel(frame: CGRectMake(10.0,(currentView.frame.origin.y + currentView.frame.size.height + 10.0),120.0,40.0))
self.view.addSubview(view3)
view3.text = "组合动画"
view3.textAlignment = .Center
view3.adjustsFontSizeToFitWidth = true
view3.backgroundColor = UIColor.lightGrayColor()
//
let layer3 = view3.layer
// CAAnimationGroup组合动画效果
let rotate: CABasicAnimation = CABasicAnimation()
rotate.keyPath = "tranform.rotation"
rotate.toValue = M_PI
let scale: CABasicAnimation = CABasicAnimation()
scale.keyPath = "transform.scale"
scale.toValue = 0.0
let move: CABasicAnimation = CABasicAnimation()
move.keyPath = "transform.translation"
move.toValue = NSValue(CGPoint: CGPoint(x: 217,y: 230))
let animationGroup:CAAnimationGroup = CAAnimationGroup()
animationGroup.animations = [rotate,scale,move]
animationGroup.duration = 2.0
animationGroup.fillMode = kCAFillModeForwards
animationGroup.removedOnCompletion = false
animationGroup.repeatCount = MAXFLOAT
//
layer3.addAnimation(animationGroup,forKey: nil)

CAKeyframeAnimation关键帧动画
主要属性:
keyPath : 要设置的属性
path : 路径可用UIBezierPath（设置了path，将忽略values）
duration : 动画时长
repeatCount : 重复次数
calculationMode : 动画计算方式
values：每一个关键帧（设置了path，将忽略values）
removedOnCompletion：执行完之后不删除动画
fillMode：执行完之后保存最新的状态
delegate：代理

let view = UILabel(frame: CGRectMake((self.view.frame.size.width - 200.0) / 2,40.0))
self.view.addSubview(view)
view.text = "CAKeyframeAnimation动画"
view.backgroundColor = UIColor.lightGrayColor()
//
let layer = view.layer
// 位移
let keyAnimate = CAKeyframeAnimation(keyPath: "position")
// 设定关键帧
let value0 = NSValue(CGPoint: layer.position)
let value1 = NSValue(CGPoint: CGPointMake(layer.position.x,layer.position.y + 200))
let value2 = NSValue(CGPoint: CGPointMake(layer.position.x - 150,layer.position.y + 200))
let value3 = NSValue(CGPoint: CGPointMake(layer.position.x - 150,layer.position.y))
let value4 = NSValue(CGPoint: layer.position)
// 速度曲线
let tf0 = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaSEOut)
let tf1 = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
let tf2 = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseIn)
let tf3 = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaSEOut)
keyAnimate.timingFunctions = [tf0,tf1,tf2,tf3]
// 每段执行的时间
keyAnimate.keyTimes = [0.0,0.5,0.6,0.7,1]
//
keyAnimate.values = [value0,value1,value2,value3,value4]
keyAnimate.autoreverses = false
keyAnimate.repeatCount = 3
keyAnimate.duration = 6.0
//
keyAnimate.delegate = self
//
layer.addAnimation(keyAnimate,forKey: "position")

// 代理方法
override func animationDidStart(anim: CAAnimation) {
        print("开始")
}

override func animationDidStop(anim: CAAnimation,finished flag: Bool) {
        print("结束")
}

let view3 = UILabel(frame: CGRectMake(10.0,60.0,60.0))
self.view.addSubview(view3)
view3.text = "抖动"
view3.backgroundColor = UIColor.lightGrayColor()
//
let layer3 = view3.layer
// 抖动
let animation3 = CAKeyframeAnimation()
animation3.keyPath = "transform.rotation"
// (-M_PI_4 /90.0 * 5)表示-5度 。
let value31 = NSValue(CGPoint: CGPointMake(CGFloat(-M_PI_4 / 90.0 * 5.0),0.0))
let value32 = NSValue(CGPoint: CGPointMake(CGFloat(M_PI_4 / 90.0 * 5.0),0.0))
let value33 = NSValue(CGPoint: CGPointMake(CGFloat(-M_PI_4 / 90.0 * 5.0),0.0))
animation3.values = [value31,value32,value33];
animation3.removedOnCompletion = false
animation3.fillMode = kCAFillModeForwards
animation3.duration = 0.2
animation3.repeatCount = MAXFLOAT
//
layer3.addAnimation(animation3,forKey: nil)

原文链接：https://www.f2er.com/swift/321435.html

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