ios - 标签栏未与UITabBarController一起出现

Question

我对此代码有疑问:
http://pastebin.com/4D6hmAQh

标题栏成功显示(带有标题aFaire)，但未出现选项卡栏。

如何以编程方式使标签栏出现？

Answer 1

您已经覆盖了loadView的RootViewController方法，并且没有调用[super loadView]语句。但是，UITabBarController需要通过tabBar方法初始化其loadView。因此，您必须调用[super loadView]。

- (void)loadView {
    [super loadView];
    // self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];

    self.title = @"aFaire";

    NSMutableArray *localViewControllersArray = [[NSMutableArray alloc] initWithCapacity:3];
    FirstViewController *firstViewController = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
    firstViewController.tabBarItem.title = @"First";

    [localViewControllersArray addObject:firstViewController];

    self.viewControllers = localViewControllersArray;
    self.view.autoresizingMask = (UIViewAutoresizingFlexibleHeight);
}