Question

我正在尝试以编程方式用SplitViewController替换当前视图。这是我的代码。

ProjectNavigationController *projectNavPanel = [[ProjectNavigationController alloc] init];
[projectNavPanel setProjectIndex:[indexPath row]];
[projectNavPanel setKuluId:[[[[[appDelegate userSettingsDictionary] objectForKey:@"Projects"] objectAtIndex:[indexPath row]] objectForKey:@"Kulu Id"] intValue]];

ProjectDetailController *projectDetailPanel = [[ProjectDetailController alloc] init];
[projectDetailPanel setProjectIndex:[indexPath row]];
ProjectSplitViewController *splitRootController = [[ProjectSplitViewController alloc] init];

[splitRootController setViewControllers:[NSArray arrayWithObjects:projectNavPanel, projectDetailPanel, nil]];

[[self view] removeFromSuperview];
[[appDelegate window] setRootViewController:splitRootController];

这几乎是正常的，有一个例外。加载拆分视图控制器并处于纵向模式时，导航视图会隐藏 - 如预期的那样 - 但详细信息视图没有带有按钮的工具栏，以在弹出视图中显示导航。根据我的研究，我明白这是默认行为。我错过了什么吗？在detailViewController中几乎没有，所以我没有在这里包含代码，但如果有帮助，请告诉我。

Answer 1

您的代码中缺少一些内容;

首先，要让导航栏添加按钮，您必须在UINavigationController和UISplitViewController之间设置ProjectDetailController。

其次，您必须设置UISplitViewControllerDelegate并使用委托方法添加按钮：

- (void)splitViewController:(UISplitViewController *)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)pc
{   
    [[projectDetailPanel navigationItem] setLeftBarButtonItem:barButtonItem animated:YES];
}

- (void)splitViewController:(UISplitViewController *)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
    [[projectDetailPanel navigationItem] setLeftBarButtonItem:nil animated:YES];
}

第三，不要忘记将标题设置为ProjectNavigationController，或手动将标题设置为刚刚实施的barButtonItem方法中的splitViewController:willHideViewController:withBarButtonItem:forPopoverController。

缺少UISPlitViewController弹出按钮

1 个答案: