对uibuttons的跳跃效果

Question

在我的应用程序中,我使用了移动子View.If它达到y = 150,我想在跳跃效果中制作一个按钮,我试过这个链接为UIImageView的外观添加反弹效果它在水平方向工作,我想要一个垂直方向,这是我的代码,

-(void)godown 
 {
if (movingview.center.y < 150) movingview.center = CGPointMake(movingview.center.x, movingview.center.y +5);
if(movingview.center.y ==150)
{
  [UIView beginAnimations:@"bounce" context:nil];
  [UIView setAnimationRepeatCount:3];
  [UIView setAnimationRepeatAutoreverses:YES];  
  CGAffineTransform transform = CGAffineTransformMakeScale(1.3,1.3);
  bt1.transform = transform;
  bt2.transform=transform;
 [UIView commitAnimations];  
}
}

请帮我换成跳跃效果(垂直)？

Answer 1

试试这个.您可以进行一些更改,以满足您的需求,

        CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"transform"];
        anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        anim.duration = 0.125;
        anim.repeatCount = 1;
        anim.autoreverses = YES;
        anim.removedOnCompletion = YES;
        anim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)];
        [senderView.layer addAnimation:anim forKey:nil];

希望这可以帮助.

Answer 2

斯威夫特 3

在这里，我发现了一个关于这个有吸引力的流行动画的有用帖子。希望这是你想要的

@IBAction func btnCancel_click(_ sender: Any)
{
    btnCancel.transform = CGAffineTransform(scaleX: 0.50, y: 0.50)
    UIView.animate(withDuration: 2.0,
                   delay: 0,
                   usingSpringWithDamping: 0.2,
                   initialSpringVelocity: 6.0,
                   options: .allowUserInteraction,
                   animations: { [weak self] in
                    self?.btnCancel.transform = .identity
        },
                   completion: nil)
}

来源：http : //evgenii.com/blog/spring-button-animation-with-swift/