刷新UISplitView控制器的主TableView [英] Refreshing Master TableView of a UISplitView Controller

问题描述

在将我们最新的iPhone App移植到通用应用程序时，我决定在TabBarController内使用iPad的SplitView Controller.由AppDelegate管理每个Tab的SplitViewController.

while porting our latest iPhone App to an universal app, I decided to use a iPad's SplitView Controller inside of a TabBarController. The SplitViewController is managed by AppDelegate for every Tab.

一切正常，但是我的问题是我的MasterView(在SplitView的左侧)包括4个Category-Buttons来更改TableViews数据.如果单击按钮之一，则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了它.

All works fine, but my problem is that my MasterView (on the left of the SplitView) includes 4 Category-Buttons to change the TableViews Data. If I click one of the buttons, the TableView needs to Refresh/ReloadData, to Display the new Content of the selected category. I created a function to do the changes and linked my buttons to it in the interface builder.

在我的函数结束时，我试图像这样刷新控制器:

At the end of my function, I tried to refresh the Controller like this:

[self tableView ReloadData];

，但是SplitView不显示刷新.仍然是旧数据. 我用NSLog进行了一些测试，以检查我的功能是否正常工作.没问题.

but the SplitView don't show the refresh. Still the old Data. I tested around a bit with NSLog, to check if my function works correctly. No problems.

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

Then I tried to access the tableView through SplitViewController itself, like this:

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

    [detail.tableView reloadData];

再次，没有错误，..但没有刷新.

Again, no error,.. but no refresh.

我错过了什么吗?有什么方法可以轻松地在SplitView中重新加载TableViewController吗?我已经读过一些有关通过NotificationCenter向代表发送通知的信息，但是仍然找不到有用的资源.

Am I missing something? Is there any way to easily reload the TableViewController in SplitView? I've read something about sending a Notfication via NotificationCenter to the delegate, but still couldn't find a helpful ressource.

为了理解我的结构，这是我在AppDelegates"didFinishLaunchingWithOptions"方法中设置SplitView的方法:

For understanding my structure, here is the way I set up the SplitView in my AppDelegates "didFinishLaunchingWithOptions" Method:

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++;

推荐答案

尝试:

PresetController *detail = [split.viewControllers lastObject];

索引为0的视图控制器将是您的主"控制器，而我认为详细信息"控制器是具有您要更新的表视图的控制器.

The view controller at index 0 will be your "master" controller, and I presume that the "detail" controller is the one that has the table view you are trying to update.

您不想在选项卡视图中使用UISplitViewController；它必须是rootViewController.

You don't want to use a UISplitViewController inside a tab view; it needs to be the rootViewController.

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