IOS POP动画

参考链接一:基础知识
参考链接二:很详细的讲解

参考链接二:演示代码

参考链接三:POPAnimation 源码仓库

pop与coreanimation不同之处, 在于pop可以支持任何NSObeject对象,而coreanimation只支持CALayer

• 增删改查示例:

// 添加动画
POPSpringAnimation *anim = [POPSpringAnimation animation]; 
....
[layer pop_addAnimation:anim forKey:@"myKey"]; 

// 删除动画
[layer pop_removeAnimationForKey:@"myKey"];

// 查询&修改动画
anim = [layer animationForKey:@"myKey"];
if (anim){
anim.toValue = @(42.0);
}else{
....
}

一. 类型

Pop动画总共有4种类型,如下:

(一). Spring 弹性动画

POPSpringAnimation *anim = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerBounds];
anim.toValue = [NSValue valueWithCGRect:CGRectMake(0,0,400,400)];
[layer pop_addAnimation:anim forKey:@"size"];

(二). Decay 衰减动画

POPDecayAnimation *anim = [POPDecayAnimation animationWithPropertyNamed:kPOPLayerPositionX];
anim.velocity = [NSValue valueWithCGPoint:CGPointMake(3,3)]; // 速度
[layer pop_addAnimation:anim forKey:@"slide"];

(三). Basic 基础动画

POPBasicAnimation *anim = [POPBasicAnimation animationWithPropertyNamed:kPOPViewAlpha];
anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
anim.fromValue = @(0.0);
anim.toValue = @(1.0);
[view pop_addAnimation:anim forKey:@"fade"];

(四). Custom 自定义动画

// 占位

二. Properties 属性设置

通过POPAnimatableProperty来设置具体属性值

POPSpringAnimation *anim = [POPSpringAnimation animation];
anim.property = [POPAnimatableProperty propertyWithName:kPOPLayerBounds];

除了系统已经提供的properties外,我们还可以定制自己的property

prop = [POPAnimatableProperty propertyWithName:@"com.foo.radio.volume" initializer:^(POPMutableAnimatableProperty *prop){
// get
prop.readBlock = ^(id obj, CGFloat values[]){
values[0] = [obj volume];
}

// set
prop.writeBlock = ^(id obj, const CGFloat values[]){
[obj setVolume:values[0]];

// dynamics threshold 动画开始
prop.threshold = 0.01; 
}
}];

anim.property = prop;

三. 五步创建POPAnimation

(一). 选择类型:POPBasicAnimtaion , POPSpringAnimation, POPDecayAnimation

1. POPBasicAnimation

POPSpringAnimaton *anim = [POPSpringAnimation animaton];
basicAnimation.timingFunciton = [CAMediaTimingFunciton functionWithName:kCAMediaTimingFunctionLinear];

kCAMediaTimingFunctionLinear kCAMediaTimingFunctionEaseIn
kCAMediaTimingFunctionEaseOut kCAMediaTimingFunctionEaseInEaseOut

2. POPSpringAnimation

POPSpringAnimation *springAnimation = [POPSpringAnimation animation];
springAnimation.velocity = @(1000); // 速率
sprngAnimation.springBounciness = 14; // 弹簧弹力:晃动的幅度,[0-20, 默认为4]
springAnimation.springSpeed = 3; // 弹簧速度 [0-20,默认为12] 
springAnimation.dynamicsMass = 3; // 弹簧质量
springAnimation.dynamicsTension = 7;  // 弹簧张力
springAnimation.dynamicsFriction = 700; // 弹簧摩擦

3. POPDecayAnimation

POPDecayAniamtion *decayAnimation = [POPDecayAnimation animation];
decayAnimation.velocity = @(233);
decayAnimation.deceleration = 0.833;  [0-1] // 减速

(二). 属性设置: properties

• View: kPOPViewAlpha, kPOPViewBackgroundColor, kPOPViewBounds,
  kPOPViewCenter, kPOPViewFrame, kPOPViewScaleXY, kPOPViewSizer

• Layer: kPOPLayerBackgroundColor, kPOPLayerBounds, kPOPLayerScaleXY,
  kPOPLayerSize, kPOPLayerOpacity, kPOPLayerPositionX, kPOPLayerPositionY, kPopLayerRotation

anim.property = [POPAnimationProperty propertyWithName:kPOPViewFrame];

(三). 设置改变值: toValue

• anim.toValue = @(1.0); // alpha, opacity, positionX, positionY,rotation(M_PI/4)
• anim.toValue = [UIColor redColor]; // color
• anim.toValue = [NSValue valueWithCGPoint:CGPointMake(200,200)]; center,position
• anim.toValue = [NSValue valueWithCGRect:CGRectMake(0,0,400,400)];
• anim.toValue = [NSValue valueWithCGSize:CGSizeMake(40,40)]; // size,bounds,frame,scaleXY

anim.toValue  = [NSValue valueWithCRGectMake(0,0,90,100)];

(四). 命名&回调

anim.name = @"PopFrameAnim";
anim.completionBlock = ^(POPAnimation *anim, BOOL finished){

};

// 或者代理: <POPAnimatorDelegate>
- (void)pop_animationDidStart:(POPAnimation *)anim; 
- (void)pop_animationDidStop:(POPAnimation *)anim finished:(BOOL)finished;
- (void)pop_animationDidReachToValue:(POPAnimation *)anim;

(五). 添加

[view pop_addAnimation: anim forKey:@"PopFrameAnim"];