xcode删除main.Storyboard 保持工程干净 需要注意事项

1.删除info.plist文件中 Main storyboard file base name项 该项用于引导程序打开Main的 storyboard 文件

2.在appdelegate中，

application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 函数创建window，即

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

3.在appdelegate中，

application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 函数中，显示window

    [self.window makeKeyAndVisible]; //显示窗口

eg:

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

    MViewController * vc = [[MViewController alloc] init];

    NaviViewController * nc = [[NaviViewController alloc] initWithRootViewController:vc];

    self.window.rootViewController = nc;

    [self.window makeKeyAndVisible]; //显示窗口