前言
最近因?yàn)楣ぷ鞯男枰?，打算用swift/172288.html">swift/238953.html">swift重構(gòu)現(xiàn)有項(xiàng)目，實(shí)現(xiàn)過(guò)程中發(fā)現(xiàn)用到了很多系統(tǒng)的動(dòng)畫(huà)實(shí)現(xiàn)，因?yàn)橹暗亩际怯肙C實(shí)現(xiàn)的，這里主要是把一些動(dòng)畫(huà)效果來(lái)通過(guò)swift實(shí)現(xiàn)一下。
這篇文章主要是實(shí)現(xiàn)一下CATransition動(dòng)畫(huà)的不同效果。
第一步 創(chuàng)建一個(gè)swift文件并聲明相應(yīng)的枚舉類(lèi)型
enum TransitionAnimType : Int {case fade = 0, //淡入淡出push, //推擠reveal, //揭開(kāi)moveIn, //覆蓋cube, //立方體suckEffect, //吮吸oglFlip, //翻轉(zhuǎn)rippleEffect, //波紋pageCurl, //翻頁(yè)pageUnCurl, //反翻頁(yè)cameraIrisHollowOpen, //開(kāi)鏡頭cameraIrisHollowClose, //關(guān)鏡頭curlDown, //下翻頁(yè)curlUp, //上翻頁(yè)flipFromLeft, //左翻轉(zhuǎn)flipFromRight, //右翻轉(zhuǎn)ramdom //隨機(jī)}enum TransitionSubType : Int {case top = 0, //上left, //左bottom, //下right, //右ramdom //隨機(jī)}enum TransitionCurve : Int {case Default = 0, //默認(rèn)EaseIn, //緩進(jìn)EaseOut, //緩出EaseInEaseOut, //緩進(jìn)緩出Linear, //線性Ramdom //隨機(jī)}上面三個(gè)枚舉類(lèi)型分別代表：
第二步 自定義函數(shù)返回動(dòng)畫(huà)類(lèi)型
/// 返回動(dòng)畫(huà)類(lèi)型private func animationType(animType: TransitionAnimType) -> String { /// 設(shè)置轉(zhuǎn)場(chǎng)動(dòng)畫(huà)類(lèi)型 let animTypeArray = ["fade", "push", "reveal", "moveIn", "cube", "suckEffect", "oglFlip", "rippleEffect", "pageCurl", "pageUnCurl", "cameraIrisHollowOpen", "cameraIrisHollowClose", "curlDown", "curlUp", "flipFromLeft", "flipFromRight", "ramdom"] return objectFromDataSource(array: animTypeArray, index: animType.rawValue, isRamdom: (TransitionAnimType.ramdom == animType)) as! String}第三步 自定義函數(shù)返回動(dòng)畫(huà)方向
/// 返回動(dòng)畫(huà)方向private func animationSubType(subType: TransitionSubType) -> String { let animSubTypeArray = [kCATransitionFromTop, kCATransitionFromLeft, kCATransitionFromBottom, kCATransitionFromRight] return objectFromDataSource(array: animSubTypeArray, index: subType.rawValue, isRamdom: (TransitionSubType.ramdom == subType)) as! String}第四步 自定義函數(shù)返回動(dòng)畫(huà)曲線
/// 返回動(dòng)畫(huà)曲線private func animationCurve(curve: TransitionCurve) -> String { let animCurveArray = [kCAMediaTimingFunctionDefault, kCAMediaTimingFunctionEaseIn, kCAMediaTimingFunctionEaseOut, kCAMediaTimingFunctionEaseInEaseOut, kCAMediaTimingFunctionLinear] return objectFromDataSource(array: animCurveArray, index: curve.rawValue, isRamdom: (TransitionCurve.Ramdom == curve)) as! String}第五步 不難發(fā)現(xiàn)，上面三個(gè)自定義方法中我們都用到了objectFromDataSource這個(gè)方法，從我們的傳參不難發(fā)現(xiàn)，它就是為了返回我們需要的指定數(shù)據(jù)的，下面我們來(lái)實(shí)現(xiàn)一下這個(gè)方法
/// 統(tǒng)一從數(shù)據(jù)返回對(duì)象private func objectFromDataSource(array: Array<Any>, index: Int, isRamdom: Bool) -> AnyObject { let count = array.count let i = isRamdom ? Int(arc4random_uniform(UInt32(count))) : index return array[i] as AnyObject}第六步 好了，現(xiàn)在所有的準(zhǔn)備工作已經(jīng)做好，接下來(lái)我們來(lái)看一下具體的動(dòng)畫(huà)實(shí)現(xiàn)的方法
func layerTransition(animTye: TransitionAnimType, subType: TransitionSubType, curve: TransitionCurve, duration: CGFloat, layer: CALayer) {let key = "transition"if layer.animation(forKey: key) != nil { layer.removeAnimation(forKey: key)}let transition = CATransition()/// 動(dòng)畫(huà)時(shí)長(zhǎng)transition.duration = CFTimeInterval(duration)/// 動(dòng)畫(huà)類(lèi)型transition.type = animationType(animType: animTye)/// 動(dòng)畫(huà)方向transition.subtype = animationSubType(subType: subType)/// 緩動(dòng)函數(shù)transition.timingFunction = CAMediaTimingFunction(name: animationCurve(curve: curve))/// 完成動(dòng)畫(huà)刪除transition.isRemovedOnCompletion = truelayer.add(transition, forKey: key)}大功告成！接下來(lái)我們?nèi)バ枰褂脛?dòng)畫(huà)的地方來(lái)調(diào)取我們第六步實(shí)現(xiàn)的方法就好了。so easy ！哈哈
layerTransition(animTye: .ramdom, subType: .ramdom, curve: .Ramdom, duration: 2.0, layer: (self.view.window?.layer)!)
是不是感覺(jué)很簡(jiǎn)單呢，上面的代碼組合一下就可以直接用嘍，有需要的拿走不謝～～
總結(jié)
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