工具栏 +导航栏 +分段控制？

Question

我正在尝试找到一种方法来布局应用程序，该应用程序包括底部的选项卡栏、顶部的导航栏以及导航栏上用于切换视图的一行按钮（在第一个选项卡上）。

我画了一个非常粗略的草图（抱歉！），但我希望它能够说明意图。

底部有两个选项卡（tab1 和 tab2）。

当选择 Tab1 时，导航栏将有 3 个按钮，将显示不同的视图（tab1_1、tab1_2、tab1_3）。

当选择 Tab2 时，导航栏不会显示任何按钮，而是一些简单的文本。

此时，我的应用程序委托的 didFinishLaunchingWithOptions 中有以下方案：

    UIViewController *viewController1 = [[Tab1_ViewController alloc] initWithNibName:@"Tab1_ViewController" bundle:nil];
    UIViewController *viewController2 = [[Tab2_ViewController alloc] initWithNibName:@"Tab2_ViewController" bundle:nil];

    tab1NavController = [[UINavigationController alloc] initWithRootViewController:viewController1];
    tab2NavController = [[UINavigationController alloc] initWithRootViewController:viewController2];

    self.tabBarController = [[UITabBarController alloc] init];
    self.tabBarController.viewControllers = [NSArray arrayWithObjects:tab1NavController, tab2NavController, nil];
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];

我想知道是否需要重做我正在做的事情以实现如图所示的布局。

任何帮助将不胜感激，谢谢！

Answer 1

我已经为我当前的项目做到了这一点...我希望这会对您有所帮助...

首先在您的第一个 viewController [您给出的第一个草图]处使用 UITabbarController

对于您的第一个视图，请使用此代码....

 - (void)viewDidLoad {
[super viewDidLoad];

dashBoardView = [[DashboardViewController alloc] initWithNibName:@"DashboardViewController" bundle:nil];
dashBoardView.title = @"dashBoardView";
UINavigationController *mydashboarController = [[[UINavigationController alloc] initWithRootViewController:dashBoardView] autorelease];
mydashboarController.navigationBar.barStyle = UIBarStyleBlack;
[listOfViewControllers addObject:mydashboarController];
[dashBoardView release];

ordersView = [[OrdersViewController alloc] initWithNibName:@"OrdersViewController" bundle:nil];
    ordersView.title = @"ordersView";
UINavigationController *myorderController = [[[UINavigationController alloc] initWithRootViewController:ordersView] autorelease];
myorderController.navigationBar.barStyle = UIBarStyleBlack;
[listOfViewControllers addObject:myorderController];
[ordersView release];

orderList = [[OrderListViewController alloc] initWithNibName:@"OrderListViewController" bundle:nil];
orderList.title = @"orderList";
UINavigationController *myorderListController = [[[UINavigationController alloc] initWithRootViewController:orderList] autorelease];
myorderListController.navigationBar.barStyle = UIBarStyleBlack;
[listOfViewControllers addObject:myorderListController];
[orderList release];

productView = [[ProductViewController alloc] initWithNibName:@"ProductViewController" bundle:nil];
    productView.title = @"productView";
UINavigationController *myproductController = [[[UINavigationController alloc] initWithRootViewController:productView] autorelease];
[listOfViewControllers addObject:myproductController];
[productView release];

[self.tabBarController setViewControllers:listOfViewControllers animated:YES];

NSArray *segmentTextContent = [NSArray arrayWithObjects:NSLocalizedString(@"Dashboard", @""),NSLocalizedString(@"Order", @""),
                               NSLocalizedString(@"Product", @""),NSLocalizedString(@"More", @""),
                               nil];
UISegmentedControl* segmentedControl = [[UISegmentedControl alloc] initWithItems:segmentTextContent];
segmentedControl.selectedSegmentIndex = 0;
segmentedControl.autoresizingMask = UIViewAutoresizingFlexibleWidth;
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.frame = CGRectMake(0, 0, 400, 40);
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];

//defaultTintColor = [segmentedControl.tintColor retain];   // keep track of this for later

segmentedControl.tintColor = [UIColor colorWithHue:8.0 saturation:8.0 brightness:8.0 alpha:1.0];
segmentedControl.alpha = 0.8;

self.navigationItem.titleView = segmentedControl;
[segmentedControl release]; 
}

如果您不清楚，请敲...