Objective c 刷新UISplitView控制器的主表视图

在将我们最新的iPhone应用程序移植到通用应用程序时，我决定在Tabbar控制器中使用iPad的SplitView控制器。SplitViewController由AppDelegate为每个选项卡管理

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

所有这些都可以正常工作，但我的问题是我的主视图（位于SplitView的左侧）包含4个类别按钮来更改TableView数据。如果单击其中一个按钮，TableView需要刷新/重新加载数据，以显示所选类别的新内容。 我创建了一个函数来进行更改，并在界面生成器中将我的按钮链接到该函数

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

在函数结束时，我尝试如下刷新控制器：

[self tableView ReloadData];

   // PresetController is my TableViewController in the SplitView  
    UISplitViewController *split = (UISplitViewController *)self.parentViewController;    
    PresetController *detail = [split.viewControllers objectAtIndex:0];   

    [detail.tableView reloadData];

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

但是SplitView不显示刷新。还是旧数据。 我用NSLog测试了一下，以检查我的功能是否正常工作。没问题

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

然后我尝试通过SplitViewController本身访问tableView，如下所示：

[self tableView ReloadData];

   // PresetController is my TableViewController in the SplitView  
    UISplitViewController *split = (UISplitViewController *)self.parentViewController;    
    PresetController *detail = [split.viewControllers objectAtIndex:0];   

    [detail.tableView reloadData];

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

再一次，没有错误，。。但是没有刷新

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

我错过什么了吗？有没有办法在SplitView中轻松重新加载TableViewController？我读过一些关于通过NotificationCenter向代表发送通知的内容，但仍然找不到有用的资源

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

编辑：

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

为了理解我的结构，以下是我在AppDelegates“didFinishLaunchingWithOptions”方法中设置SplitView的方法：

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

尝试：

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

索引0处的视图控制器将是您的“主”控制器，我假定“细节”控制器是具有您尝试更新的表视图的控制器

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

编辑：

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;

---

您不希望在选项卡视图中使用

UISplitViewController

；它需要是

rootViewController

嘿，保罗，谢谢你的回答。我尝试了这种方法，得到了以下错误：**由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[UINavigationController tableView]：未识别的选择器已发送到实例0x8abdc20”。似乎我只得到了导航控制器，而不是主视图，我的TableView在主视图中。如果你有导航控制器，那么你可以要求它提供视图控制器（topViewController）。如果我要求提供视图控制器，我得到的是UILayoutContainerView。我编辑了我的第一篇文章，向您展示了如何在AppDelegate中设置SplitView；是否可能是因为您的rootViewController设置不起作用而使用UILayoutContainerView（听起来不像视图控制器）呢？似乎在我所选选项卡的视图中，我有UILayoutContainerView，它包含PresetController（左侧）和Navigationcontroller（右侧）

NSMutableArray *controllers = [NSMutableArray arrayWithCapacity:[self.rootController.viewControllers count]];

        int tabNum = 0;
        for (UIViewController *controller in self.rootController.viewControllers) {



                UISplitViewController *split = [[[UISplitViewController alloc] init] autorelease];
                split.tabBarItem = controller.tabBarItem;
                iPadDetailView *detail = [[iPadDetailView alloc] initWithNibName:@"iPadDetailView" bundle:nil]; // a detail view will come here
                UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:detail] autorelease];

                split.viewControllers = [NSArray arrayWithObjects:controller, nav, nil];


                [controllers addObject:split];
            }
            tabNum++;