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RazzleDazzle是IFTTT开源的一个iOS帧动画框架，用Swift编写，非常适用于APP初次使用时的介绍和引导信息。RazzleDazzle由IFTTT此前开源的一款Objective-C滚动帧动画库JazzHands发展而来。JazzHands是UIKit一个简单的关键帧基础动画框架，可通过手势、scrollview、KVO或者ReactiveCocoa控制动画，被IFTTT应用在IFTTT for iPhone上。多款知名应用程序都使用了JazzHands这个框架，目前其在github上有3688个star。对于RazzleDazzle，开发者除了使用RazzleDazzle支持的动画类型外，还可以使用自定义动画类型。
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AlphaAnimationanimates thealphaproperty (creates fade effects).@H_502_2@
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BackgroundColorAnimationanimates thebackgroundColorproperty.@H_502_2@
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RotationAnimationanimates a rotation transform (for rotation effects).@H_502_2@
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ScaleAnimationapplies a scaling transform (to scale view sizes).@H_502_2@
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TranslationAnimationapplies a translation transform (to translate view position).@H_502_2@
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CornerRadiusAnimationanimates thelayer.cornerRadiusproperty.@H_502_2@
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HideAnimation animates the hidden property (hides and shows views).@H_502_2@
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LayerStrokeStartAnimationanimates thestrokeStartproperty of aCAShapeLayer(does not work with LayerStrokeEndAnimation).@H_502_2@
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LayerStrokeEndAnimationanimates thestrokeEndproperty of aCAShapeLayer(does not work with LayerStrokeStartAnimation).@H_502_2@
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LayerFillColorAnimationanimates thefillColorproperty of aCAShapeLayer.@H_502_2@
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LayerStrokeColorAnimationanimates thestrokeColorproperty of aCAShapeLayer.@H_502_2@
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PathPositionAnimationanimates thelayer.positionproperty of aUIViewalong a path.@H_502_2@
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LabelTextColorAnimationanimates thetextColorproperty of aUILabel.@H_502_2@
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ConstraintConstantAnimationanimates anAutoLayoutconstraint constant.@H_502_2@
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ConstraintMultiplierAnimationanimates anAutoLayoutconstraint constant as a multiple of an attribute of another view (to offset or resize views based on another view's size)@H_502_2@
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ScrollViewPageConstraintAnimationanimates anAutoLayoutconstraint constant to place a view on a scroll view page (to position views on a scrollView using AutoLayout). This is the animation doing the heavy lifting forAnimatedPagingScrollViewController'skeepView(view: onPage:)function.@H_502_2@
