从导航堆栈中删除视图控制器 [英] Removing viewcontrollers from navigation stack

问题描述

我有一个导航堆栈，比如 5 个 UIViewController.我想在单击第 5 个视图控制器中的按钮时删除堆栈中的第 3 个和第 4 个视图控制器.是否有可能做到这一点?如果是这样怎么办?

I have a navigation stack, with say 5 UIViewControllers. I want to remove the 3rd and 4th viewcontrollers in the stack on the click of a button in the 5th viewcontroller. Is it possible to do this? If so how?

推荐答案

使用此代码并享受:

NSMutableArray *navigationArray = [[NSMutableArray alloc] initWithArray: self.navigationController.viewControllers];

// [navigationArray removeAllObjects];    // This is just for remove all view controller from navigation stack.
[navigationArray removeObjectAtIndex: 2];  // You can pass your index here
self.navigationController.viewControllers = navigationArray;
[navigationArray release];

希望对你有帮助.

Swift 代码

guard let navigationController = self.navigationController else { return }
var navigationArray = navigationController.viewControllers // To get all UIViewController stack as Array
navigationArray.remove(at: navigationArray.count - 2) // To remove previous UIViewController
self.navigationController?.viewControllers = navigationArray

删除除最后一个以外的所有 ViewController ->左上角没有返回按钮

To remove all ViewController except last one -> no Back Button in the upper left corner

guard let navigationController = self.navigationController else { return }
var navigationArray = navigationController.viewControllers // To get all UIViewController stack as Array
let temp = navigationArray.last
navigationArray.removeAll()
navigationArray.append(temp!) //To remove all previous UIViewController except the last one
self.navigationController?.viewControllers = navigationArray

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