CABasicAnimation在页面跳转再返回后，动画停止的解决办法

 CABasicAnimation *transformAnimation = [CABasicAnimation animationWithKeyPath:@"transform"];
        transformAnimation.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)]; transformAnimation.beginTime = CACurrentMediaTime();
        transformAnimation.duration = 2.0f;
        transformAnimation.repeatCount = HUGE_VALF;
        transformAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        [hh.layer addAnimation:transformAnimation forKey:@"transformAnimation"];

纵横四海一个呼吸灯动画，但是有个问题，每当界面跳转再回来，动画就没了
解决： 加一句transformAnimation.removedOnCompletion = NO;