ios 使用 pushViewController 切换视图的时候，如何设置有 模态切换 效果动画？

Question

比如我切换的时候，代码如下

   CATransition *animation = [Core animationInit];
    [animation setSubtype:kCATransitionFromTop];
    [self.navigationController pushViewController:VC animated:NO];//必须设置为no，动画才有效
    [self.navigationController.view.layer addAnimation:animation forKey:nil];

效果有点像了。返回的时候

 CATransition *animation = [Core animationInit];
    animation.timingFunction = UIViewAnimationCurveEaseInOut;
    animation.fillMode = kCAFillModeForwards;
    animation.type = kCATransitionPush;
    [animation setDuration:0.15];
    animation.subtype = kCATransitionFromBottom;
    [self.navigationController.view.layer addAnimation:animation forKey:nil];
    [self.navigationController popViewControllerAnimated:NO];

返回的时候。动画有点僵硬。总之，感觉还是跟模态切换那个默认动画有点诧异。有解决的办法吗？

Answer 1

CATransition *transition = [CATransition animation];
transition.duration = 0.5f;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = @"moveIn";
transition.subtype = kCATransitionFromTop;
transition.delegate = self;
<#push/pop#>

Answer 2

你应该查阅 presentViewController 这个方法。