ios - 从导航堆栈中删除 ViewController

Question

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 removeObject:oneVCtoRemove];
            [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？

Answer 1

当你想从导航栈中移除一个 View 时，你可以简单地在导航栏上调用这个方法来从栈中弹出 View :

[self.navigationController popViewControllerAnimated:YES];

弹出一个外部 View 使用

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