Question

我使用以下代码从navigationcontroller（viewcontrollers）中删除我的登录页面，以便在返回时（后退按钮）不会再次进入视图。

if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
    NSMutableArray *VCs = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];
    if([[VCs objectAtIndex:[VCs count] - 2] isKindOfClass:[loginViewController class]]&&(VCs.count>=4))
    {
        [VCs removeObjectAtIndex:[VCs count] - 2];
        [VCs removeObjectAtIndex:[VCs count] - 2];
        [self.navigationController setViewControllers: VCs];
    }
}

这适用于iPhone。但是对于iPad，因为我们使用的是splitViewController，如果我们编码像

那样

NSMutableArray *VCs = [NSMutableArray arrayWithArray:self.splitViewController.viewControllers];

我们将获得的是一组navigationControllers。我们是否有一个真正的逻辑可以从splitviewcontroller中删除特定的viewcontroller？

Answer 1

如您所说，您的拆分视图控制器将返回一组导航控制器（取决于项目设置）。一旦你有了这些参考，你可以随意操纵它们。

UISplitViewController *splitViewController = (UISplitViewController *)self.window.rootViewController;
UINavigationController *masterNavVC = (UINavigationController *)splitViewController.viewControllers.firstObject;
UINavigationController *detailNavVC = (UINavigationController *)splitViewController.viewControllers.lastObject;

//Now you have the master and detail navigation controllers, get your VC you need to manipulate
NSMutableArray *masterVCs = masterNavVC.viewControllers;
NSMutableArray *detailVCs = detailNavVC.viewControllers;

//Remove the ones you need to - this example is arbitrary. Put your logic here
if(masterVCs.count > 0 && [masterVCs[0] isKindOfClass:[LoginViewController class]])
{
     //Remove or add
}

如何控制iPad（UISplitViewController）ios xcode中的后退按钮导航

1 个答案: