如何为UIView animateWithDuration添加跳出效果 [英] How do I add a bounce effect to UIView animateWithDuration

问题描述

我正在尝试为下面的动画添加一个反弹效果。这是我的代码：

I am trying to add a bounce effect to the animation below. Here is my code:

[UIView animateWithDuration:1.0
                       delay:.0
      usingSpringWithDamping:0.5
       initialSpringVelocity:2.0
                     options:UIViewAnimationOptionCurveEaseOut
                  animations:^{
                      // Coming from a value of CGAffineTransformMakeScale(0.001, 1.0)
                      self.myView.transform = CGAffineTransformMakeScale(1.0, 1.0);
                  }completion:nil
          ];

它无法正常工作。它在动画结束时变宽，然后恢复正常。我希望宽度反弹到小于1.0的值，不超过1.0。

It's not working correctly. It becomes wider at the end of the animation then it goes back to normal. I want the width to bounce to a lesser value than 1.0, not more than 1.0.

推荐答案

从iOS 7开始，动态动画有更好的实现方式。研究这个 Apple的示例代码或者来自 Ray Wenderlich 。

Dynamic animations have better ways to implement since iOS 7. Study this Sample code from Apple or from Ray Wenderlich.

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