iOS 左右抖动效果

CAKeyframeAnimation *shakeAnim = [CAKeyframeAnimation animation];

shakeAnim.keyPath = @"transform.translation.x";

shakeAnim.duration = 0.15;

CGFloat delta = 10;

shakeAnim.values = @[[@0](http://my.oschina.net/chenmarfun) , @(-delta), @(delta), @0];

shakeAnim.repeatCount = 2;

[self.myView.layer addAnimation:shakeAnim forKey:nil];