动画在APP开发过程中还是经常出现，将花几天的时间对Facebook开源动画库 POP进行简单的学习；本文主要针对的是POPBasicAnimation运用；实例源代码已经上传至gitHub,地址：https://github.com/wujunyang/facebookPopTest
Pop Github : https://github.com/facebook/pop
Pop比较全的实例：https://github.com/kevinzhow/pop-handapp
Popping -Pop案例 : https://github.com/schneiderandre/popping
心跳案例POP：https://github.com/hanzhen/MiniMatch-iOS
POP使用教程: https://github.com/maxmyers/FacebookPop
POP默认支持三种动画 但同时也支持自定义动画
POPBasicAnimation //基本动画
POPSpringAnimation //类似弹簧一般的动画效果
POPDecayAnimation //过阻尼效果，衰减效果
POPCustomAnimation //自定义动画
一：POPBasicAnimation运用
实例1：创建一个动画效果，关于视图透明度的变化，从全透明经过五秒的时间变成alpha为1的不透明效果；此处运用到的POPBasicAnimation类；
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[UIColor whiteColor];
//1:初始化一个视图块
if (self.myView==nil) {
self.myView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.myView.backgroundColor=[UIColor redColor];
self.myView.alpha=;
[self.view addSubview:self.myView];
}
//创建一个POPBasicAnimation动画
POPBasicAnimation *basicAnimation=[POPBasicAnimation animationWithPropertyNamed:kPOPViewAlpha];
basicAnimation.fromValue=@();
basicAnimation.toValue=@();
basicAnimation.duration=; //设置动画的间隔时间 默认是0.4秒
basicAnimation.repeatCount=HUGE_VALF; //重复次数 HUGE_VALF设置为无限次重复
[self.myView pop_addAnimation:basicAnimation forKey:@"myViewAnimation"];
}
其实POP创建动画的步骤分为三步，a:创建相应的动画类 b:增加相应的属性 c:附加到相应的对象上；
上面实例中kPOPViewAlpha是POP为我们封装好的一个关于透明度的动画效果；加上属性就满足我们的要求；从而也引出POP中一个很关键的类POPAnimatableProperty，里面定义的一些常量在今后的运用中非常关键；
我们可以简单看一下POPAnimatableProperty里面定义的一些常量，因为主要针对IOS方面，所以就选出IOS相关的内容：
/**
Common CALayer property names.
*/
extern NSString * const kPOPLayerBackgroundColor;
extern NSString * const kPOPLayerBounds;
extern NSString * const kPOPLayerCornerRadius;
extern NSString * const kPOPLayerBorderWidth;
extern NSString * const kPOPLayerBorderColor;
extern NSString * const kPOPLayerOpacity;
extern NSString * const kPOPLayerPosition;
extern NSString * const kPOPLayerPositionX;
extern NSString * const kPOPLayerPositionY;
extern NSString * const kPOPLayerRotation;
extern NSString * const kPOPLayerRotationX;
extern NSString * const kPOPLayerRotationY;
extern NSString * const kPOPLayerScaleX;
extern NSString * const kPOPLayerScaleXY;
extern NSString * const kPOPLayerScaleY;
extern NSString * const kPOPLayerSize;
extern NSString * const kPOPLayerSubscaleXY;
extern NSString * const kPOPLayerSubtranslationX;
extern NSString * const kPOPLayerSubtranslationXY;
extern NSString * const kPOPLayerSubtranslationY;
extern NSString * const kPOPLayerSubtranslationZ;
extern NSString * const kPOPLayerTranslationX;
extern NSString * const kPOPLayerTranslationXY;
extern NSString * const kPOPLayerTranslationY;
extern NSString * const kPOPLayerTranslationZ;
extern NSString * const kPOPLayerZPosition;
extern NSString * const kPOPLayerShadowColor;
extern NSString * const kPOPLayerShadowOffset;
extern NSString * const kPOPLayerShadowOpacity;
extern NSString * const kPOPLayerShadowRadius; /**
Common CAShapeLayer property names.
*/
extern NSString * const kPOPShapeLayerStrokeStart;
extern NSString * const kPOPShapeLayerStrokeEnd;
extern NSString * const kPOPShapeLayerStrokeColor;
extern NSString * const kPOPShapeLayerFillColor;
extern NSString * const kPOPShapeLayerLineWidth;
extern NSString * const kPOPShapeLayerLineDashPhase; /**
Common NSLayoutConstraint property names.
*/
extern NSString * const kPOPLayoutConstraintConstant; #if TARGET_OS_IPHONE /**
Common UIView property names.
*/
extern NSString * const kPOPViewAlpha;
extern NSString * const kPOPViewBackgroundColor;
extern NSString * const kPOPViewBounds;
extern NSString * const kPOPViewCenter;
extern NSString * const kPOPViewFrame;
extern NSString * const kPOPViewScaleX;
extern NSString * const kPOPViewScaleXY;
extern NSString * const kPOPViewScaleY;
extern NSString * const kPOPViewSize;
extern NSString * const kPOPViewTintColor; /**
Common UIScrollView property names.
*/
extern NSString * const kPOPScrollViewContentOffset;
extern NSString * const kPOPScrollViewContentSize;
extern NSString * const kPOPScrollViewZoomScale;
extern NSString * const kPOPScrollViewContentInset;
extern NSString * const kPOPScrollViewScrollIndicatorInsets; /**
Common UITableView property names.
*/
extern NSString * const kPOPTableViewContentOffset;
extern NSString * const kPOPTableViewContentSize; /**
Common UICollectionView property names.
*/
extern NSString * const kPOPCollectionViewContentOffset;
extern NSString * const kPOPCollectionViewContentSize; /**
Common UINavigationBar property names.
*/
extern NSString * const kPOPNavigationBarBarTintColor; /**
Common UIToolbar property names.
*/
extern NSString * const kPOPToolbarBarTintColor; /**
Common UITabBar property names.
*/
extern NSString * const kPOPTabBarBarTintColor; /**
Common UILabel property names.
*/
extern NSString * const kPOPLabelTextColor; #else /**
Common NSView property names.
*/
extern NSString * const kPOPViewFrame;
extern NSString * const kPOPViewBounds;
extern NSString * const kPOPViewAlphaValue;
extern NSString * const kPOPViewFrameRotation;
extern NSString * const kPOPViewFrameCenterRotation;
extern NSString * const kPOPViewBoundsRotation; /**
Common NSWindow property names.
*/
extern NSString * const kPOPWindowFrame;
extern NSString * const kPOPWindowAlphaValue;
extern NSString * const kPOPWindowBackgroundColor; #endif
其实常量对应到其每个UIKIT的一个属性上，下面把部分列出来，就可以了解到动画效果是针对什么属性进行
NSString * const kPOPLayerBackgroundColor = @"backgroundColor"; //背景色
NSString * const kPOPLayerBounds = @"bounds"; //坐标
NSString * const kPOPLayerCornerRadius = @"cornerRadius"; //圆形 值越大,角就越圆
NSString * const kPOPLayerBorderWidth = @"borderWidth"; //边框宽度
NSString * const kPOPLayerBorderColor = @"borderColor"; //边框色
NSString * const kPOPLayerOpacity = @"opacity"; //透明度
NSString * const kPOPLayerPosition = @"position"; //位置 position是相对于屏幕的
NSString * const kPOPLayerPositionX = @"positionX";
NSString * const kPOPLayerPositionY = @"positionY";
NSString * const kPOPLayerRotation = @"rotation"; //旋转
NSString * const kPOPLayerRotationX = @"rotationX";
NSString * const kPOPLayerRotationY = @"rotationY";
NSString * const kPOPLayerScaleX = @"scaleX"; //缩放系数
NSString * const kPOPLayerScaleXY = @"scaleXY"; //XY缩放系数
NSString * const kPOPLayerScaleY = @"scaleY"; //Y缩放系数
NSString * const kPOPLayerSize = @"size"; //大小
NSString * const kPOPLayerSubscaleXY = @"subscaleXY";
NSString * const kPOPLayerSubtranslationX = @"subtranslationX";
NSString * const kPOPLayerSubtranslationXY = @"subtranslationXY";
NSString * const kPOPLayerSubtranslationY = @"subtranslationY";
NSString * const kPOPLayerSubtranslationZ = @"subtranslationZ";
NSString * const kPOPLayerTranslationX = @"translationX"; //X轴平移量
NSString * const kPOPLayerTranslationXY = @"translationXY"; //XY轴平移量
NSString * const kPOPLayerTranslationY = @"translationY"; //Y轴平移量
NSString * const kPOPLayerTranslationZ = @"translationZ"; //Z轴平移量
NSString * const kPOPLayerZPosition = @"zPosition"; //遮挡属性
NSString * const kPOPLayerShadowColor = @"shadowColor"; //设置阴影
NSString * const kPOPLayerShadowOffset = @"shadowOffset"; //阴影偏移
NSString * const kPOPLayerShadowOpacity = @"shadowOpacity"; //阴影透明度
NSString * const kPOPLayerShadowRadius = @"shadowRadius"; //阴影半径 // CAShapeLayer
NSString * const kPOPShapeLayerStrokeStart = @"shapeLayer.strokeStart";//strokeStart 动画的fromValue = 0，toValue = 1 表示从路径的0位置画到1 怎么画是按照清除开始的位置也就是清除0 一直清除到1 效果就是一条路径慢慢的消失 strokeStart 动画的fromValue = 1，toValue = 0 表示从路径的1位置画到0 怎么画是按照清除开始的位置也就是1 这样开始的路径是空的（即都被清除掉了）一直清除到0 效果就是一条路径被反方向画出来
NSString * const kPOPShapeLayerStrokeEnd = @"shapeLayer.strokeEnd";// strokeEnd 动画的fromValue = 0，toValue = 1 表示 这里我们分3个点说明动画的顺序 strokeEnd从结尾开始清除 首先整条路径先清除后2/3，接着清除1/3 效果就是正方向画出路径 strokeEnd 动画的fromValue = 1，toValue = 0 效果就是反方向路径慢慢消失
NSString * const kPOPShapeLayerStrokeColor = @"shapeLayer.strokeColor"; //画笔的色
NSString * const kPOPShapeLayerFillColor = @"shapeLayer.fillColor";
NSString * const kPOPShapeLayerLineWidth = @"shapeLayer.lineWidth"; //线的宽度
NSString * const kPOPShapeLayerLineDashPhase = @"shapeLayer.lineDashPhase";
从上面的源代码不难发现，其实针对不同的UIKit都有一些相应的常量，比如在UIView中就有我们上面实例中出现的kPOPViewAlpha；因为POP动画是针对对象的，所以很多的控件都可以做出相应的动画效果；CALayer、CAShapeLayer、UIView中相关的常量大部分控件都可以使用；注意像常量kPOPLayerRotation它是作用在层上，所以我们在使用时要把它加载到相应视图的layer上面；
实例2：创建一个动画效果，实现一个视图在延迟2s后经过5秒的时间X轴从50移到300位置的动画效果；
//2:初始化一个视图块
if (self.myXView==nil) {
self.myXView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.myXView.backgroundColor=[UIColor blueColor];
[self.view addSubview:self.myXView];
} //创建一个POPBasicAnimation动画 X轴的变化 从50移到300位置
POPBasicAnimation *anBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPLayerPositionX];
anBasic.toValue = @();
anBasic.beginTime = CACurrentMediaTime() + 2.0f; //可以用来设置动画延迟执行时间，若想延迟2s，就设置为CACurrentMediaTime()+2，CACurrentMediaTime()为图层的当前时间
anBasic.duration=;//设置动画的间隔时间 默认是0.4秒
[self.myXView pop_addAnimation:anBasic forKey:@"myBackColorViewAnimation”];
实例3：创建一个动画效果，实现视图的背影色经过5秒后从黑色变成黄色的动画效果；
//3:初始化一个视图块
if (self.myBackColorView==nil) {
self.myBackColorView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.myBackColorView.backgroundColor=[UIColor blackColor];
[self.view addSubview:self.myBackColorView];
} //创建一个POPBasicAnimation动画 视图的背影色从黑色经过5秒后渐进变成黄色
POPBasicAnimation *anBackGroundBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPViewBackgroundColor];
anBackGroundBasic.toValue=[UIColor yellowColor];
anBackGroundBasic.duration=;
[self.myBackColorView pop_addAnimation:anBackGroundBasic forKey:@"myBackColorViewAnimation”];
从上面三个实例可以发现，其实toValue或FormValue的值都是根据动画属性类型来定义，因为它们都是id型；这也决定它们可以是任何类型的值，只要符合我们要求就行；
除了上面那些常用的属性外，还有一个运行CAMediaTimingFunction:速度控制函数属性；四种如下：
kCAMediaTimingFunctionLinear（线性）：匀速，给你一个相对静态的感觉
kCAMediaTimingFunctionEaseIn（渐进）：动画缓慢进入，然后加速离开
kCAMediaTimingFunctionEaseOut（渐出）：动画全速进入，然后减速的到达目的地
kCAMediaTimingFunctionEaseInEaseOut（渐进渐出）：动画缓慢的进入，中间加速，然后减速的到达目的地。这个是默认的动画行为。
实例4：创建一个POPBasicAnimation动画 视图中心以kCAMediaTimingFunctionLinear直线运行到中心点为100,64
//4:初始化一个视图块
if (self.mytimingFunctionLinearView==nil) {
self.mytimingFunctionLinearView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.mytimingFunctionLinearView.backgroundColor=[UIColor greenColor];
[self.view addSubview:self.mytimingFunctionLinearView];
} //创建一个POPBasicAnimation动画 视图中心以kCAMediaTimingFunctionLinear直线运行到中心点为100,64
POPBasicAnimation *anLinearBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPViewCenter];
anLinearBasic.toValue=[NSValue valueWithCGPoint:CGPointMake(, )];
anLinearBasic.duration=;
anLinearBasic.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
[self.mytimingFunctionLinearView pop_addAnimation:anLinearBasic forKey:@"myLinearBasic"];
实例5：创建一个POPBasicAnimation动画 视图中心以kCAMediaTimingFunctionEaseInEaseOut直线运行到中心点为200,64
//5:初始化一个视图块
if (self.mytimingFunctionEaseInEaseOutView==nil) {
self.mytimingFunctionEaseInEaseOutView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.mytimingFunctionEaseInEaseOutView.backgroundColor=[UIColor grayColor];
[self.view addSubview:self.mytimingFunctionEaseInEaseOutView];
} //创建一个POPBasicAnimation动画 视图中心以kCAMediaTimingFunctionEaseInEaseOut直线运行到中心点为200,64
POPBasicAnimation *anEaseInEaseOutBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPViewCenter];
anEaseInEaseOutBasic.toValue=[NSValue valueWithCGPoint:CGPointMake(, )];
anEaseInEaseOutBasic.duration=;
anEaseInEaseOutBasic.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[self.mytimingFunctionEaseInEaseOutView pop_addAnimation:anEaseInEaseOutBasic forKey:@"mytimingFunctionEaseInEaseOutView”];
POP比较好的一点是保留了动画结束后的状态，通过block回调。如下面的实例视图块的大小会被变成100*100
实例6：创建一个POPBasicAnimation动画 让视图块的大小从50*50 慢慢变到100*100
//6:初始化一个视图块
if (self.mySizeView==nil) {
self.mySizeView=[[UIView alloc]initWithFrame:CGRectMake(, , , )];
self.mySizeView.backgroundColor=[UIColor redColor];
[self.view addSubview:self.mySizeView];
} //创建一个POPBasicAnimation动画 让视图块的大小从50*50 慢慢变到100*100
POPBasicAnimation *ansizeBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPViewSize];
ansizeBasic.toValue=[NSValue valueWithCGSize:CGSizeMake(, )];
ansizeBasic.duration=;
ansizeBasic.repeatCount=HUGE_VALF;
[self.mySizeView pop_addAnimation:ansizeBasic forKey:@"mySizeView”];
setCompletionBlock可以在动画完成后做一些其它的操作；
实例7：创建一个POPBasicAnimation动画 让视图块的大小从60*30 慢慢变到100*100 动画完成后又有一个动画变成60*30
//7:初始化一个Label
if (self.myLabel==nil) {
self.myLabel=[[UILabel alloc]initWithFrame:CGRectMake(, , , )];
self.myLabel.backgroundColor=[UIColor redColor];
self.myLabel.textAlignment=NSTextAlignmentCenter;
self.myLabel.textColor=[UIColor whiteColor];
self.myLabel.alpha=;
self.myLabel.text=@"Label";
[self.view addSubview:self.myLabel];
} //创建一个POPBasicAnimation动画 让视图块的大小从60*30 慢慢变到100*100 动画完成后又有一个动画变成60*30
POPBasicAnimation* anLabelBasic = [POPBasicAnimation animationWithPropertyNamed:kPOPViewSize];
anLabelBasic.duration=3.0;
anLabelBasic.toValue = [NSValue valueWithCGSize:CGSizeMake(, )];
anLabelBasic.timingFunction =[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[anLabelBasic setCompletionBlock:^(POPAnimation *ani, BOOL fin) {
if (fin) {
NSLog(@"self.myLabel.frame=%@",NSStringFromCGRect(self.myLabel.frame)); POPBasicAnimation *newLabelAnimation=[POPBasicAnimation animationWithPropertyNamed:kPOPViewSize];
newLabelAnimation.duration=3.0;
newLabelAnimation.toValue = [NSValue valueWithCGSize:CGSizeMake(, )];
newLabelAnimation.timingFunction =[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[self.myLabel pop_addAnimation:newLabelAnimation forKey:@"newMyLabelAnimation"];
}
}];
[self.myLabel pop_addAnimation:anLabelBasic forKey:@"myLabelAnimation"];
实例8：增加一个动画 类似心跳的效果，把动画封装在方法里面，方便进行递归调用；
@property(nonatomic)CALayer *myCriLayer;
@property (nonatomic) BOOL animated; 初始化代码： //8:初始化一个CALayer层
if (self.myCriLayer==nil) {
self.myCriLayer=[CALayer layer];
[self.myCriLayer pop_removeAllAnimations];
self.myCriLayer.opacity = 1.0;
self.myCriLayer.transform = CATransform3DIdentity;
[self.myCriLayer setMasksToBounds:YES];
[self.myCriLayer setBackgroundColor:[UIColor colorWithRed:0.16 green:0.72 blue: alpha:].CGColor];
[self.myCriLayer setCornerRadius:15.0f];
[self.myCriLayer setBounds:CGRectMake(0.0f, 0.0f, 30.0f, 30.0f)];
self.myCriLayer.position = CGPointMake(self.view.center.x, 380.0);
[self.view.layer addSublayer:self.myCriLayer];
} //增加一个动画 类似心跳的效果
[self performAnimation]; 把动画封装在方法里面，方便进行递归调用； -(void)performAnimation
{
[self.myCriLayer pop_removeAllAnimations];
POPBasicAnimation *anim = [POPBasicAnimation animationWithPropertyNamed:kPOPLayerScaleXY]; if (self.animated) {
anim.toValue = [NSValue valueWithCGPoint:CGPointMake(1.0, 1.0)];
}else{
anim.toValue = [NSValue valueWithCGPoint:CGPointMake(2.0, 2.0)];
} anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; //不同的类型 心跳会不一样 self.animated = !self.animated; //使每次都有区别 anim.completionBlock = ^(POPAnimation *anim, BOOL finished) {
if (finished) { [self performAnimation]; //当动画结束后又递归调用，让它产生一种心跳的效果
}
}; [self.myCriLayer pop_addAnimation:anim forKey:@"Animation"];
}
这样的方式可以在今后很多重复的动画中进行递归运用；
对于forKey是为了可以管理相应的动画，比如移除动画之类的，可以简单了解一下官方的实例
POPSpringAnimation *anim = [POPSpringAnimation animation];
...
[layer pop_addAnimation:anim forKey:@"myKey”]; 移除： [layer pop_removeAnimationForKey:@"myKey”]; 也可以删除这个上面所有的动画： [layer pop_removeAllAnimations]; 可以判断是否存在
anim = [layer pop_animationForKey:@"myKey"];
if (anim) {
/* update to value to new destination */
anim.toValue = @(42.0);
} else {
/* create and start a new animation */
....
}
当添加类似[myView pop_addAnimation:animation forKey:@"myKey"];的动画时，如果你用相同的key添加其他动画，那么新添加的动画将会取代先前的动画。
二：Pop Animation相比于Core Animation的优点
Pop Animation应用于CALayer时，在动画运行的任何时刻，layer和其presentationLayer的相关属性值始终保持一致，而Core Animation做不到。
Pop Animation可以应用任何NSObject的对象，而Core Aniamtion必须是CALayer。
三：相关属性的值
一：View Properties 1：Alpha - kPOPViewAlpha POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewAlpha];
basicAnimation.toValue= @(); // scale from 0 to 1
2：Color - kPOPViewBackgroundColor POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPViewBackgroundColor];
basicAnimation.toValue= [UIColor redColor];
3：Size - kPOPViewBounds POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewBounds];
basicAnimation.toValue=[NSValue valueWithCGRect:CGRectMake(, , , )]; //first 2 values dont matter
4：Center - kPOPViewCenter POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewCenter];
basicAnimation.toValue=[NSValue valueWithCGPoint:CGPointMake(, )];
5：Location & Size - kPOPViewFrame POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewFrame];
basicAnimation.toValue=[NSValue valueWithCGRect:CGRectMake(, , , )];
6：Size - kPOPViewScaleXY POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewScaleXY];
basicAnimation.toValue=[NSValue valueWithCGSize:CGSizeMake(, )];
7：Size(Scale) - kPOPViewSize POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewSize];
basicAnimation.toValue=[NSValue valueWithCGSize:CGSizeMake(, )];
二：Layer Properties 1：Color - kPOPLayerBackgroundColor POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerBackgroundColor];
basicAnimation.toValue= [UIColor redColor];
2：Size - kPOPLayerBounds POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerBounds];
basicAnimation.toValue= [NSValue valueWithCGRect:CGRectMake(, , , )]; //first 2 values dont matter
3：Size - kPOPLayerScaleXY POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerScaleXY];
basicAnimation.toValue= [NSValue valueWithCGSize:CGSizeMake(, )];//increases width and height scales
4：Size - kPOPLayerSize POPBasicAnimation *basicAnimation = [POPBasicAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName:kPOPLayerSize];
basicAnimation.toValue= [NSValue valueWithCGSize:CGSizeMake(, )];
5：Opacity - kPOPLayerOpacity POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerOpacity];
basicAnimation.toValue = @();
6：Position - kPOPLayerPosition POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerPosition];
basicAnimation.toValue= [NSValue valueWithCGRect:CGRectMake(, , , )];//last 2 values dont matter
7：X Position - kPOPLayerPositionX POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerPositionX];
basicAnimation.toValue= @();
8：Y Position - kPOPLayerPositionY POPSpringAnimation *anim = [POPSpringAnimation animation];
anim.property=[POPAnimatableProperty propertyWithName:kPOPLayerPositionY];
anim.toValue = @();
9：Rotation - kPOPLayerRotation POPSpringAnimation *basicAnimation = [POPSpringAnimation animation];
basicAnimation.property = [POPAnimatableProperty propertyWithName: kPOPLayerRotation];
basicAnimation.toValue= @(M_PI/); //2 M_PI is an entire rotation
最近有个妹子弄的一个关于扩大眼界跟内含的订阅号，每天都会更新一些深度内容，在这里如果你感兴趣也可以关注一下(嘿对美女跟知识感兴趣)，当然可以关注后输入：github 会有我的微信号，如果有问题你也可以在那找到我；当然不感兴趣无视此信息；
