Question

我正在尝试在navigationController的工具栏中添加一些按钮：我看到工具栏，但没有按钮。这是我设置工具栏的代码部分......

（这是我的AppDelegate）

// Create a table view controller
    RootViewController *rootViewController = [[RootViewController alloc]
                                              initWithStyle:UITableViewStyleGrouped];

    rootViewController.managedObjectContext = context;
    rootViewController.entityName = @"County";

    //Navigation Controller
    UINavigationController *aNavigationController = [[UINavigationController alloc]
                                                     initWithRootViewController:rootViewController];

    self.navigationController = aNavigationController;


    //Barbuttons
    UIBarButtonItem *homeButton;
    homeButton = [[[UIBarButtonItem alloc] initWithTitle:@"         Inizio         " style:UIBarButtonItemStyleBordered target:self action:@selector(home)] autorelease];

    UIBarButtonItem *barButton;
    barButton = [[[UIBarButtonItem alloc] initWithTitle:@"  Funzioni online   " style:UIBarButtonItemStyleBordered target:self action:@selector(caricamappa)] autorelease];

    UIBarButtonItem *creditsButton;
    creditsButton = [[[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"credits2.png"] style:UIBarButtonItemStyleBordered target:self action:@selector(credits)] autorelease];    

    NSArray *baritems = [NSArray arrayWithObjects: homeButton, barButton, creditsButton, nil];

    [window addSubview:[navigationController view]];
    [self.navigationController.toolbar setItems:baritems];
    [self.navigationController setToolbarHidden:NO];


    [window makeKeyAndVisible];

    [rootViewController release];
    [aNavigationController release];

关于我的错误的任何想法？

Answer 1

您应该将按钮添加到rootViewController的navigationItem属性，而不是导航控制器的工具栏。类似的东西：

rootViewController.navigationItem.rightBarButtonItems = barItems;

Answer 2

查看the documentation，尤其是此部分：

此工具栏的内容管理是通过自定义视图完成的与此导航控制器关联的控制器。对于每个视图在导航堆栈上的控制器，您可以分配一组自定义工具栏项使用setToolbarItems：animated：方法的UIViewController。

导航控制器工具栏按钮问题 - Xcode

2 个答案: