Xcode 通用应用程序模板，并覆盖 didFinishLaunchingWithOptions

发布于 2024-10-18 23:16:53 字数 1040 浏览 4 评论 0原文

我正在尝试使用基于窗口的应用程序的默认 Xcode 模板构建我的第一个通用 iOS 应用程序 - 并将设备系列设置为“通用”。（我使用的是 Xcode 4，但我相信这些模板与以前版本的 Xcode 几乎相同。）

这将创建一个共享应用程序委托，以及适用于 iPhone 和 iPad 的特定应用程序委托。

由于 iPad 需要在应用程序启动时加载 SplitViewController，而 iPhone 需要加载 RootViewController（表视图） - 我决定尝试重写设备特定应用程序委托中的 didFinishLaunchingWithOptions 方法，对于 iPhone 如下所示：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [super application:application didFinishLaunchingWithOptions:launchOptions];

    RootViewController *rootViewController = (RootViewController *)[_navController topViewController];
    rootViewController.context = [self managedObjectContext];

    [_window addSubview:_navController.view];

    return YES;
}

但是，由于 Xcode 将设备特定的应用程序委托文件放在“iPhone”或“iPad”组中，因此我收到一条错误消息，指出“RootViewController.h”文件未找到...尽管尝试使用

#import "RootViewController.h"

以下方式导入它：解决这个问题，还是我完全以错误的方式处理这个问题？我不想将“RootViewController.h”文件移到 iPhone 组中，因为我认为它也将在 iPad 上使用。

原文

I'm attempting to build my first universal iOS app using the default Xcode templates for a window-based application - and setting the Device Family to "Universal". (I'm using Xcode 4, but I believe the templates are nearly identical for previous versions of Xcode.)

This creates a shared app delegate, along with specific app delegates for iPhone and iPad.

Since the iPad will need to load a SplitViewController when the app launches, and the iPhone will need to load the RootViewController (a table view) - I decided to try overriding the didFinishLaunchingWithOptions method in the device specific app delegates, like this for the iPhone:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [super application:application didFinishLaunchingWithOptions:launchOptions];

    RootViewController *rootViewController = (RootViewController *)[_navController topViewController];
    rootViewController.context = [self managedObjectContext];

    [_window addSubview:_navController.view];

    return YES;
}

However, since Xcode places the device specific app delegate files in an "iPhone" or "iPad" group, I get an error saying "RootViewController.h" file not found... despite trying to import it with:

#import "RootViewController.h"

Is there a way to resolve that, or am I going about this the wrong way altogether? I'd rather not move the "RootViewController.h" file into the iPhone group, since I think it will also be used on the iPad.

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