UITabBarController的TabBar稍微隐藏

Question

我的 UITabBarController 的 tabBar 稍微偏离视图，请告诉我我的代码有什么问题：

LoggedInViewController *lvc = [[[LoggedInViewController alloc]
                               initWithAccount:account] autorelease];
[self presentModalViewController:lvc animated:YES];

- (void)viewDidLoad
{
    self.tabController = [[UITabBarController alloc] init];
    LoggedInFeedNavigationController *navController;
    navController = [[LoggedInFeedNavigationController alloc]
                     initWithAccount:self.account];
    [self.tabController setViewControllers:
        [NSArray arrayWithObject:navController]];
    [self.view addSubview:self.tabController.view];
    [super viewDidLoad];
}

Answer 1

您将 tabController 视图添加为子视图，但尚未指定它应位于其父视图中的位置，或者当父视图更改大小时应如何调整其大小。尝试以下操作：

- (void)viewDidLoad
{
    [super viewDidLoad]; // see note

    self.tabController = [[UITabBarController alloc] init];
    LoggedInFeedNavigationController *navController;
    navController = [[LoggedInFeedNavigationController alloc]
                      initWithAccount:self.account];
    [self.tabController setViewControllers:
        [NSArray arrayWithObject:navController]];

    UIView *tabView = self.tabController.view;
    [self.view addSubview:tabView];

    tabView.frame = self.view.bounds;
    tabView.autoresizingMask = (UIViewAutoresizingFlexibleWidth |
                                UIViewAutoresizingFlexibleHeight);
}

注意：您不是 需要调用[super viewDidLoad]，但如果您确实决定调用它，则应该在viewDidLoad 方法的开头，而不是结尾。