一起使用笔尖和情节提要

Question

根据我在互联网上阅读的内容，笔尖和故事板在同一个项目中可以相互比较。现在我正在创建一个选项卡式应用程序，并希望执行以下操作：

Tab 1：用笔尖构造，

标签 2：用故事板构建，

标签 3：用笔尖构造

最初我使用 nibs 创建了所有内容，因此在我的委托中，我使用以下代码从一个选项卡传递到下一个选项卡：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    UIViewController *viewController1, *viewController2, *viewController3;
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController_iPhone" bundle:nil] autorelease];
        viewController2 = [[[SecondViewController alloc] initWithNibName:@"SecondViewController_iPhone" bundle:nil] autorelease];
        viewController3 = [[[ThirdViewController alloc] initWithNibName:@"ThirdViewController_iPhone" bundle:nil] autorelease];
    } else {
        viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController_iPad" bundle:nil] autorelease];
        viewController2 = [[[SecondViewController alloc] initWithNibName:@"SecondViewController_iPad" bundle:nil] autorelease];
        viewController3 = [[[ThirdViewController alloc] initWithNibName:@"ThirdViewController_iPad" bundle:nil] autorelease];

    }
    self.tabBarController = [[[UITabBarController alloc] init] autorelease];
    self.tabBarController.viewControllers = @[viewController1, viewController2, viewController3];
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;



}

我需要 SecondViewController_.storyboard，而不是 SecondViewController_.xib。我该怎么做呢？我可以将名称“SecondViewController_.nib”更改为“SecondViewController_.storyboard”吗？我不认为这会起作用..

任何帮助将不胜感激！

编辑： 我使用的代码：

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.title = NSLocalizedString(@"Events", @"Events");
        self.tabBarItem.image = [UIImage imageNamed:@"second"];
    }
    return self; }

Answer 1

您可以按照您的建议创建一个故事板，然后在其中创建一个SecondViewController 场景。在代码中，您可以将 initWithNibName: 替换为对 storyboardWithName: 和 instantiateViewControllerWithIdentifier: 的调用。

但是，由于故事板的一个主要功能是能够将多个控制器联系在一起并定义它们之间的关系，所以很难想象为什么为一个控制器做这件事会是一个好主意。

Answer 2

正如菲利普所说，只需使用instantiateViewControllerWithIdentifier。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    UIViewController *viewController1, *viewController2, *viewController3;
    UIStoryboard *storyboard;
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController_iPhone" bundle:nil] autorelease];
        storyboard      = [UIStoryboard storyboardWithName:@"iPhone" bundle:nil];
        viewController2 = [storyboard instantiateViewControllerWithIdentifier:@"Second"];
        viewController3 = [[[ThirdViewController alloc] initWithNibName:@"ThirdViewController_iPhone" bundle:nil] autorelease];
    } else {
        viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController_iPad" bundle:nil] autorelease];
        storyboard      = [UIStoryboard storyboardWithName:@"iPad" bundle:nil];
        viewController2 = [storyboard instantiateViewControllerWithIdentifier:@"Second"];
        viewController3 = [[[ThirdViewController alloc] initWithNibName:@"ThirdViewController_iPad" bundle:nil] autorelease];

    }
    self.tabBarController = [[[UITabBarController alloc] init] autorelease];
    self.tabBarController.viewControllers = @[viewController1, viewController2, viewController3];
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

这假设您的故事板被称为iPhone.storyboard 和iPad.storyboard，但是更改上面的代码以匹配您对这两个故事板的称呼。此外，这再次假设您将场景定义为具有Second 的“故事板 ID”（您可以通过在 IB 中选择视图控制器并转到“身份检查器”来实现），并且您还指定了“自定义类” "也有：

---

对于SecondViewController，您应该将initWithNibName:bundle: 方法替换为：

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];

    if (self) {
        self.title = NSLocalizedString(@"Events", @"Events");
        self.tabBarItem.image = [UIImage imageNamed:@"second"];
    }

    return self; 
}