我可以弹出特定ViewController吗？ [英] Can i pop to Specific ViewController?

问题描述

我正在使用基于导航的应用程序。我将First ViewController推送到Second ViewController，从Second ViewController推送到Third ViewController。现在我想从Third ViewController弹出到First ViewController。我正在使用下面的代码执行此任务，但我的应用程序崩溃。

I am using navigation based application. I push First ViewController to Second ViewController and from Second ViewController to Third ViewController. Now I want to pop from Third ViewController to First ViewController.I am performing this task using the below code but my application crashed.

请任何机构给我一些正确的指导。我不能使用pop到rootViewController，因为它是不同的viewController。在此先感谢...

Please any body give me some proper guidelines. I can't use pop to rootViewController because it's different viewController. Thanks in advance...

在第三个ViewControler中我写了这个：

FirstViewCtr *x=[[FirstViewCtr alloc] initWithNibName:@"FirstViewCtr" bundle:nil];
[self.navigationController popToViewController:x animated:NO];

推荐答案

通过编写第一行，您将获得所有索引查看控制器和第二行您将到达目的地。

By Writing the First Line you get the Indexes of all View Controllers and from second Line You will reach up to your Destination.

NSArray *array = [self.navigationController viewControllers];

[self.navigationController popToViewController:[array objectAtIndex:2] animated:YES];

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