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标题: ios - 从导航堆栈中删除 ViewController [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-12 08:54
标题: ios - 从导航堆栈中删除 ViewController

我用代码来做:

NSArray *viewControllersFromStack = [self.navigationController viewControllers];
NSMutableArray *viewControllersFromStackMutable = [NSMutableArray arrayWithArray:viewControllersFromStack];
NSMutableArray *viewControllersToRemove = [[NSMutableArray alloc]init];

for (UIViewController *currentVC in viewControllersFromStack)
{
    if ([currentVC isKindOfClass:[TalksViewController class]])
    {
        [viewControllersToRemove addObject:currentVC];
        if (viewControllersToRemove.count == 2)
        {
            UIViewController *oneVCtoRemove = [viewControllersToRemove objectAtIndex:0];
            [viewControllersFromStackMutable removeObjectneVCtoRemove];
            [self.navigationController setViewControllers:viewControllersFromStackMutable];

        }
    }
}

问题是我在导航项中引用了已删除的 VC。如何解决？

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Best Answer-推荐答案

当您想从导航堆栈中删除 View 时，您只需在导航栏上调用此方法即可将 View 从堆栈中弹出:

[self.navigationController popViewControllerAnimated:YES];

要弹出外部 View ，请使用

for(UIViewController *currentVC in viewControllersFromStack)
{
    if([currentVC isKindOfClass:[TalksViewController class]])
    {
        [currentVC.navigationController popViewControllerAnimated:YES];
    }
}

关于ios - 从导航堆栈中删除 ViewController，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22649524/

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