UITabBarController + UISplitviewController 替代品？答案

【问题标题】：UITabBarController + UISplitviewController alternatives?UITabBarController + UISplitviewController 替代品？
【发布时间】：2010-12-24 09:39:49
【问题描述】：

由于不支持此配置，我想知道人们使用了哪些替代方案。

我有一个通用应用程序，目前在 iPhone 和 iPad 上都使用 4 个选项卡的 UITabBarController。

由于我现在想使用 splitviewcontroller，我面临着一个设计决策。

我想我可以只使用顶部的工具栏并从那里开始，但希望有更多有趣的技术。

【问题讨论】：

[Migrating a tab bar-based iPhone project to iPad ](stackoverflow.com/questions/3553454/…)的可能副本
可以将 UISplitViewControllers 嵌套在 UITabBarController 中。但是，有一些解决方法是必要的。看我的回答。

标签： iphone ipad uitabbarcontroller uisplitviewcontroller

【解决方案1】：

您可以在 modelViewController 中复制一个 UITabBar，当屏幕底部的按钮被点击并交换视图时，该模型会弹出。 :)

【讨论】：

【解决方案2】：

我创建了一个 UITabBarController 子类，它将旋转消息正确地传播到它包含的所有 UISplitViewControllers。这维护了 UISplitViewControllers 的正确内部状态。但是，如果 SplitViewController 不可见，则不会调用其中一个 SplitViewController 委托方法，因此我在详细视图控制器 viewWillAppear 方法中对此进行了说明。我已经确认这适用于 iOS5.0 - iOS6.1

AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        OSMasterViewController *masterViewController = [[[OSMasterViewController alloc] initWithNibName:@"OSMasterViewController_iPhone" bundle:nil] autorelease];
        self.navigationController = [[[UINavigationController alloc] initWithRootViewController:masterViewController] autorelease];
        self.window.rootViewController = self.navigationController;

    } else {

        OSMasterViewController *masterViewController = [[[OSMasterViewController alloc] initWithNibName:@"OSMasterViewController_iPad" bundle:nil] autorelease];
        UINavigationController *masterNavigationController = [[[UINavigationController alloc] initWithRootViewController:masterViewController] autorelease];

        OSDetailViewController *detailViewController = [[[OSDetailViewController alloc] initWithNibName:@"OSDetailViewController_iPad" bundle:nil] autorelease];
        UINavigationController *detailNavigationController = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];

        masterViewController.detailViewController = detailViewController;

        UISplitViewController *splitViewController = [[[OSSplitViewController alloc] init] autorelease];
        splitViewController.viewControllers = @[masterNavigationController, detailNavigationController];
        splitViewController.delegate = detailViewController;

        OSTestViewController *secondaryController = [[[OSTestViewController alloc] init] autorelease];

        OSTabBarController *tabBarController = [[[OSTabBarController alloc] init] autorelease];
        tabBarController.viewControllers = @[self.splitViewController, secondaryController];

        self.window.rootViewController = tabBarController;
    }

    [self.window makeKeyAndVisible];
    return YES;
}

OSTabBarController.m

#import "OSTabBarController.h"

@implementation OSTabBarController

-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
    [super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
    for(UIViewController *targetController in self.viewControllers){
        if(targetController != self.selectedViewController && [targetController isKindOfClass:[UISplitViewController class]]){
            [targetController willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
        }
    }
}

-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{
    [super didRotateFromInterfaceOrientation:fromInterfaceOrientation];
    for(UIViewController *targetController in self.viewControllers){
        if(targetController != self.selectedViewController && [targetController isKindOfClass:[UISplitViewController class]]){
            [targetController didRotateFromInterfaceOrientation:fromInterfaceOrientation];
        }
    }
}

@end

DetailViewController

@implementation OSDetailViewController

-(void)viewWillAppear:(BOOL)animated{
    //the splitViewController:willHideViewController:withBarButtonItem:forPopoverController: may not have been called
    if(!UIInterfaceOrientationIsPortrait(self.interfaceOrientation)){
        self.navigationItem.leftBarButtonItem = nil;
    }
}

#pragma mark - UISplitViewControllerDelegate Methods

- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
    [self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];

}

- (void)splitViewController:(UISplitViewController *)splitController willShowViewController:(UIViewController *)viewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
    [self.navigationItem setLeftBarButtonItem:nil animated:YES];
}

@end

【讨论】：