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- (void)viewDidLoad
{
[super viewDidLoad];
[self initButton];
}
- (void)initButton
{
UIButton *button = [[UIButton alloc]init];
button.backgroundColor = [UIColor purpleColor];
button.bounds = CGRectMake(0, 0, 100, 50);
button.center = self.view.center;
button.layer.cornerRadius = 5.f;
[button addTarget:self action:@selector(clickedBtn:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
self.button = button;
}
- (void)clickedBtn:(UIButton *)button
{
POPSpringAnimation *spring = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerScaleXY];
spring.velocity = [NSValue valueWithCGSize:CGSizeMake(10.f, 10.f)];
spring.toValue = [NSValue valueWithCGSize:CGSizeMake(1.f, 1.f)];
spring.springBounciness = 18.f;
[self.button.layer pop_addAnimation:spring forKey:nil];
}
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原文地址：http://www.cnblogs.com/oumygade/p/4462198.html
