转载

IFTTT开源Swift编写的帧动画框架--RazzleDazzle

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。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。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。

RazzleDazzle支持的动画类型：

AlphaAnimation animates the alpha property (creates fade effects).
BackgroundColorAnimationanimates the backgroundColor property.
RotationAnimationanimates a rotation transform (for rotation effects).
ScaleAnimationapplies a scaling transform (to scale view sizes).
TranslationAnimationapplies a translation transform (to translate view position).
CornerRadiusAnimation animates the layer.cornerRadius property.
HideAnimation animates the hidden property (hides and shows views).
LayerStrokeStartAnimationanimates the strokeStart property of a CAShapeLayer (does not work with LayerStrokeEndAnimation).
LayerStrokeEndAnimationanimates the strokeEnd property of a CAShapeLayer (does not work with LayerStrokeStartAnimation).
LayerFillColorAnimationanimates the fillColor property of a CAShapeLayer .
LayerStrokeColorAnimationanimates the strokeColor property of a CAShapeLayer .
PathPositionAnimationanimates the layer.position property of a UIView along a path.
LabelTextColorAnimationanimates the textColor property of a UILabel .
ConstraintConstantAnimationanimates an AutoLayout constraint constant.
ConstraintMultiplierAnimationanimates an AutoLayout constraint constant as a multiple of an attribute of another view (to offset or resize views based on another view's size)
ScrollViewPageConstraintAnimationanimates an AutoLayout constraint 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 for AnimatedPagingScrollViewController 's keepView(view: onPage:) function.