适用于通用iOS 6应用的程序化情节提要

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这个很好的问题和答案与我的同时具有iPhone和iPad Xibs且现在希望使用情节提要的Universal应用程序不太相称。

这是基于xib的BSAppDelegate.m（在情节提要之前）

    #import "BSAppDelegate.h"
    #import "BSViewController.h"

    @implementation BSAppDelegate

    NSString *receivedData;

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
        // return YES;
        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
        // Override point for customization after application launch.
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
            self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPhone" bundle:nil];
        } else {        
            self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPad" bundle:nil];
    }
        self.window.rootViewController = self.viewController;   
        [self.window makeKeyAndVisible];
        return YES;
    }

我试图在上面的else之后插入以下代码，但是我不能完全完成需要将self.viewController设置为与上述代码兼容的代码修复。

UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"BSViewController"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:vc animated:YES completion:NULL];

您能告诉我如何修改代码吗？ 我正在使用Xcode 4.5.2并为iOS 6开发。

Answer 1

两个问题：

1. 只需将self.ViewController设置为您从情节提要中获取的vc :)

     #import "BSAppDelegate.h" #import "BSViewController.h" @implementation BSAppDelegate NSString *receivedData; - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. // return YES; self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // Override point for customization after application launch. if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPhone" bundle:nil]; } else { UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil]; UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"BSViewController"]; vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; self.viewController = (id)vc; } self.window.rootViewController = self.viewController; [self.window makeKeyAndVisible]; return YES; } 

2. 在情节提要中，没有设置名为“ BSViewController”的标识符，因此调用InstantiateViewControllerWithIdentifier将会失败。 设置在屏幕快照中可见的标识符（又称为情节提要ID）