关于gx_presentViewController之后，手势返回的问题。

[kakashilw]

您好，首先很感谢提供了这么方便的库，我们在使用的时候遇到一个问题，就是当用gx_presentViewController一个nav之后，

[self gx_presentViewController:navc style:GXAnimationStyleCubeRight interacting:YES completion:nil];

然后这个nav里面再push子页面，手势返回会直接返回第一个页面，而不是上一级页面。

我看您在另一个问题回到了这句【navigationController的delegate是同一个当然动画也是一样了，需要自己设置！】

我试了几种方法还是不能达到效果，不知道可否详细说说nav里要具体怎么设置，就可以既支持nav的手势返回，也支持gx_presentViewController的手势返回。

[gsyhei]

是我没注意到这个问题，我在1.0.3版本已经修复了这个问题。

[kakashilw]

十分感谢，经测试1.0.3这个问题已经OK了！

不过我这边遇到了另一个小问题想请教，就是我们用到了custom present 的GXAnimationStyleCube这个效果，不过我们是想让它从左往右旋转，然后我修改了GXAnimationCubeDelegate.m这个文件，改成这样：

//
// GXTransitionCubeDelegate.m
// GXTransitionSample
//
// Created by Gin on 2020/4/15.
// Copyright © 2020 gin. All rights reserved.
//

#import "GXAnimationCubeDelegate.h"

@interface GXAnimationCubeDelegate ()
@EnD

@implementation GXAnimationCubeDelegate

#pragma mark - Overwrite

• (void)presentViewAnimation:(id)transitionContext {
  UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
  UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

  CGFloat width = transitionContext.containerView.bounds.size.width;
  UIView *fromSnapshotView = [fromVC.view snapshotViewAfterScreenUpdates:NO];
  fromVC.view.hidden = YES;

// CATransform3D transform = CATransform3DIdentity;
// transform = CATransform3DTranslate(transform, 0, 0, width * 0.5);
// transform = CATransform3DRotate(transform, 0, 0, 0, 0);
// fromSnapshotView.layer.transform = transform;

CATransform3D transform = CATransform3DIdentity;
transform = CATransform3DTranslate(transform, width * 0.5, 0, 0);
transform = CATransform3DRotate(transform, M_PI_2, 0, 1.0, 0);
fromSnapshotView.layer.transform = transform;

[transitionContext.containerView addSubview:fromSnapshotView];

// transform = CATransform3DIdentity;
// transform = CATransform3DTranslate(transform, width * 0.5, 0, 0);
// transform = CATransform3DRotate(transform, M_PI_2, 0, 1.0, 0);

transform = CATransform3DIdentity;
transform = CATransform3DTranslate(transform, 0, 0, width * 0.5);
transform = CATransform3DRotate(transform, 0, 0, 0, 0);

toVC.view.layer.transform = transform;
[transitionContext.containerView addSubview:toVC.view];

// CATransform3D transform3D = CATransform3DIdentity;
// transform3D.m34 = 1.0 / -1200;
// transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);
// transitionContext.containerView.layer.sublayerTransform = transform3D;
// transform3D = CATransform3DRotate(transform3D, -M_PI_2, 0, 1.0, 0);

CATransform3D transform3D = CATransform3DIdentity;
transform3D.m34 = 1.0 / -1200;
transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);
transform3D = CATransform3DRotate(transform3D, -M_PI_2, 0, 1.0, 0);
transitionContext.containerView.layer.sublayerTransform = transform3D;
transform3D = CATransform3DIdentity;
transform3D.m34 = 1.0 / -1200;
transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);




[self addBackgroundViewToView:fromSnapshotView];
[self addShadowToView:toVC.view];
[self animateWithContext:transitionContext isPresent:YES animations:^{
    transitionContext.containerView.layer.sublayerTransform = transform3D;
} completion:^(BOOL finished) {
    fromVC.view.hidden = NO;
    [fromSnapshotView removeFromSuperview];
    transitionContext.containerView.layer.sublayerTransform = CATransform3DIdentity;
    toVC.view.layer.transform = CATransform3DIdentity;
}];

}

• (void)dismissViewAnimation:(id)transitionContext {
  UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
  UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
  if (self.isPush) {
  [transitionContext.containerView addSubview:toVC.view];
  [transitionContext.containerView bringSubviewToFront:fromVC.view];
  }
  CGFloat width = transitionContext.containerView.bounds.size.width;

  UIView *fromSnapshotView = [fromVC.view snapshotViewAfterScreenUpdates:NO];
  [transitionContext.containerView addSubview:fromSnapshotView];
  fromVC.view.hidden = YES;

// CATransform3D transform = CATransform3DIdentity;
// transform = CATransform3DTranslate(transform, width * 0.5, 0, 0);
// transform = CATransform3DRotate(transform, M_PI_2, 0, 1.0, 0);

CATransform3D transform = CATransform3DIdentity;
transform = CATransform3DTranslate(transform, 0, 0, width * 0.5);
transform = CATransform3DRotate(transform, 0, 0, 0, 0);

fromSnapshotView.layer.transform = transform;

UIView *toSnapshotView = [toVC.view snapshotViewAfterScreenUpdates:NO];
[transitionContext.containerView addSubview:toSnapshotView];
toVC.view.hidden = YES;

// transform = CATransform3DIdentity;
// transform = CATransform3DTranslate(transform, 0, 0, width * 0.5);
// transform = CATransform3DRotate(transform, 0, 0, 0, 0);

transform = CATransform3DIdentity;
transform = CATransform3DTranslate(transform, width * 0.5, 0, 0);
transform = CATransform3DRotate(transform, M_PI_2, 0, 1.0, 0);

toSnapshotView.layer.transform = transform;

// CATransform3D transform3D = CATransform3DIdentity;
// transform3D.m34 = 1.0 / -1200;
// transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);
// transform3D = CATransform3DRotate(transform3D, -M_PI_2, 0, 1.0, 0);
// transitionContext.containerView.layer.sublayerTransform = transform3D;
// transform3D = CATransform3DIdentity;
// transform3D.m34 = 1.0 / -1200;
// transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);

CATransform3D transform3D = CATransform3DIdentity;
transform3D.m34 = 1.0 / -1200;
transform3D = CATransform3DTranslate(transform3D, 0, 0, -width * 0.5);
transitionContext.containerView.layer.sublayerTransform = transform3D;
transform3D = CATransform3DRotate(transform3D, -M_PI_2, 0, 1.0, 0);

[self addBackgroundViewToView:toSnapshotView];
[self addShadowToView:fromSnapshotView];
[self animateWithContext:transitionContext isPresent:NO animations:^{
    transitionContext.containerView.layer.sublayerTransform = transform3D;
} completion:^(BOOL finished) {
    toVC.view.hidden = NO;
    fromVC.view.hidden = NO;
    [toSnapshotView removeFromSuperview];
    [fromSnapshotView removeFromSuperview];
    transitionContext.containerView.layer.sublayerTransform = CATransform3DIdentity;
}];

}

@EnD

把presentViewAnimation和dismissViewAnimation中涉及到旋转的对调了，然后点击present到下一个页面，以及点击返回按钮，旋转会上一个页面，动画效果都OK。

但是当手势侧滑的时候，就失效了，没有动画效果，直接就返回了。

所以想请教如果想支持侧滑的话，还需要改动里面的哪部分代码？

[gsyhei]

我说一下，我这边暂时没时间，这里我看了一下，主要是全屏手势和你这样逆转我这块代码相当于手势反过来了，就是说我本来想左滑返回，但是你实际手势在VC上是反向的手势，这样对不上。你如果愿意等的话我周末再帮你弄下

[kakashilw]

嗯，感谢，等你有时间给弄弄就行。

点击进入的两边都可以转入效果确实是有需求的，比如一个主页面，左右两边都有按钮，点右边按钮，往左转入；点左边按钮，往右转入，这样会给用户两边都有页面的动画感，用户体验很棒！

然后这个从左边往右转入，再返回的效果，这两天我试了几种都是直接返回了，没有找到更好的方法，所以，期待你这边好的方案。：）

[gsyhei]

1.0.4已经解决并加入了cube左右方向，记得点赞！

[kakashilw]

嗯 已经试了 这个版本已完美支持cube左右方向了 这么好的库和作者 必须点赞！

[kakashilw]

然后现在有个新的问题，是点击demo里gx_pushViewController相关的都会闪退。

好像是- (void)configureTransition:(UIViewController*)presentingViewController isPush:(BOOL)isPush interacting:(BOOL)interacting这里面的和push的有冲突造成的。