[BS-26] UIViewpop和Core Animation区别

Posted 2020-07-11 stevenwuzheng

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

- (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;

        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