[BS-26] UIView、pop和Core Animation区别

UIView、pop和Core Animation区别

一、UIView、pop和Core Animation的主要区别

1. Core Animation的动画只能添加到layer上(layer.position和view.frame类似)

2. pop的动画能添加到任何对象

3. pop的底层并非基于Core Animation, 是Facebook用OC和C++开发的基于CADisplayLink动画

4. Core Animation的动画仅仅是表象, 并不会真正修改对象的frame\size等值，通常用在不需要与用户交互的动画(如转场动画/下载进度动画)

5. pop和UIView实现的动画实时修改对象的属性, 真正地修改了对象的属性

二、pop动画应用举例

//弹簧动画
POPSpringAnimation *ani1 = [POPSpringAnimation animationWithPropertyNamed:kPOPViewAlpha];
[self.imgView pop_addAnimation:ani1 forKey:@"anim1"]; //可以通过[self.imgView pop_removeAnimationForKey:@"anim1"];移除该动画
ani1.fromValue = @1.0;
ani1.toValue = @0.0;

//基本的属性动画
POPBasicAnimation *anim2 = [POPBasicAnimation animationWithPropertyNamed:kPOPViewBackgroundColor];
//anim2.property = [POPAnimatableProperty propertyWithName:kPOPViewBackgroundColor];
[self.imgView pop_addAnimation:anim2 forKey:@"anim2"];
anim2.fromValue = [UIColor greenColor];
anim2.toValue = [UIColor yellowColor];

//衰减动画
//POPDecayAnimation *anim3 = [POPDecayAnimation animationWithPropertyNamed:kPOPViewFrame];

//自定义动画
//POPCustomAnimation *anim4 = [POPCustomAnimation animationWithBlock:<#^BOOL(id target, POPCustomAnimation *animation)block#>];

//延迟动画的方法
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

POPSpringAnimation *anim = [POPSpringAnimation animationWithPropertyNamed:kPOPViewCenter];

anim.springBounciness = 20;

anim.springSpeed = 20;

anim.fromValue = [NSValue valueWithCGPoint:CGPointMake(100, 100)];

anim.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 200)];

[self.sloganView pop_addAnimation:anim forKey:nil];

POPSpringAnimation *anim = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerPositionY];

anim.beginTime = CACurrentMediaTime() + 1.0;  //延迟执行

anim.springBounciness = 20;

anim.springSpeed = 20;

anim.fromValue = @(self.sloganView.layer.position.y);

anim.toValue = @(300);

anim.completionBlock = ^(POPAnimation *anim, BOOL finished){

NSLog(@"-----动画结束");

};

[self.sloganView.layer pop_addAnimation:anim forKey:nil];

}

三、pop学习资料

1. https://github.com/facebook/pop
2. https://github.com/schneiderandre/popping
3. https://github.com/MartinRGB/LearnCube-iOS
4. POPAnimation给NSObject添加的分类方法

//NSObject添加的分类，任何对象都可以调用如下方法
@implementation NSObject (POP)

- (void)pop_addAnimation:(POPAnimation *)anim forKey:(NSString *)key
{
[[POPAnimator sharedAnimator] addAnimation:anim forObject:self key:key];
}

- (void)pop_removeAllAnimations
{
[[POPAnimator sharedAnimator] removeAllAnimationsForObject:self];
}

- (void)pop_removeAnimationForKey:(NSString *)key
{
[[POPAnimator sharedAnimator] removeAnimationForObject:self key:key];
}

- (NSArray *)pop_animationKeys
{
return [[POPAnimator sharedAnimator] animationKeysForObject:self];
}

- (id)pop_animationForKey:(NSString *)key
{
return [[POPAnimator sharedAnimator] animationForObject:self key:key];
}

@end

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