导航栏在执行popViewController时闪烁黑色 [英] Navigation bar flashes black on performing popViewController

问题描述

我的应用需要反向播放动画。它的部署目标只有 IOS 7 。

My app requires Pop animation in reverse direction.It's deployment target is IOS 7 only.

所以，我已经实现了 TRVSNavigationControllerTransition api。

So ,I have implemented TRVSNavigationControllerTransition api.

I有默认的半透明导航栏。
它成功弹出但在动画时闪现黑色。

I have default translucent navigation bar. It get popped successfully but flashed black at time of animation.

我附上了实际显示效果的图像。

I have attached image of how actually it is being displayed.

感谢任何帮助。

谢谢，
Bazinga。

Thanks, Bazinga.

推荐答案

以下是我以前管理的解决方案情况。

Okay so below is the solution I used to manage the situation .

推进反向（即从左到右）

CATransition *transition = [CATransition animation];
        transition.duration = 0.3;
        transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
        transition.type = kCATransitionFromLeft;
        [transition setType:kCATransitionPush];
        transition.subtype = kCATransitionFromLeft;
        transition.delegate = self;
        [self.navigationController.view.layer addAnimation:transition forKey:nil];

        self.navigationController.navigationBarHidden = NO;
        [self.navigationController pushViewController:<objVC> animated:NO];

并且，反向弹出（即从右到左）

CATransition *transition = [CATransition animation];
        transition.duration = 0.3;
        transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
        transition.type = kCATransitionFromRight;
        [transition setType:kCATransitionPush];
        transition.subtype = kCATransitionFromRight;
        transition.delegate = self;
        [self.navigationController.view.layer addAnimation:transition forKey:nil];

        self.navigationController.navigationBarHidden = NO;
        [self.navigationController popViewControllerAnimated:NO];

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