用Storyboard實例化控制器：

步驟一：手動初始化storyboard.

1. 首先刪除系統自動創建的ViewController.h, ViewController.m 和 main.storyboard這三個文件。

   2.  點擊項目——>General——>Deployment Info,在Main Interface選項中將main刪除。

   3.   新建一個Storyboard文件，拖一個控制器，在拖一個按鈕。點擊storyboard上方的導航條，在右側“屬性”欄下view Controller復選框中Title下方將“Is  Initial View Controller”勾選上。

   4.    在AppDelegate.m文件中的didFinishLaunchingWithOptions方法中填寫下面代碼：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

//    1. Create a window

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

//    2. Create Controller(A StoryBoard)

    UIStoryboard *story = [UIStoryboard storyboardWithName:@"Storyboard" bundle:nil];

//    2.1 Instantiate Controller (With Sweet(jian tou))

    UIViewController *vc = [story instantiateInitialViewController];

//    3. Set the window Root Controller

    self.window.rootViewController = vc;

//    4. Put the window as the Main Window and visible

    [self.window makeKeyAndVisible];

    return YES;

}

步驟二：通過標記初始化storyboard。

1. 首先刪除系統自動創建的ViewController.h, ViewController.m 和 main.storyboard這三個文件。

   2.  點擊項目——>General——>Deployment Info,在Main Interface選項中將main刪除。

   3.   新建一個Storyboard文件，拖一個控制器，在拖一個按鈕。點擊storyboard上方的導航條，在右側“屬性”欄左側選項中identity選項下storyboard ID里填寫“Vstar”,之后點擊回車鍵。

   4.    在AppDelegate.m文件中的didFinishLaunchingWithOptions方法中填寫下面代碼：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

//    1. Create a window

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

//    2. Create Controller(A StoryBoard)

    UIStoryboard *story = [UIStoryboard storyboardWithName:@"Storyboard" bundle:nil];

//    2.1 Instantiate Controller (With Sweet(jian tou))

    UIViewController *vc = [story instantiateViewControllerWithIdentifier:@"Vstar"];

//    3. Set the window Root Controller

    self.window.rootViewController = vc;

//    4. Put the window as the Main Window and visible

    [self.window makeKeyAndVisible];

    return YES;

}