storyBoard中切换应用启动的切入点方法

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

{

if (![[NSUserDefaults standardUserDefaults] boolForKey:@"FristTime"]) {

//默认的切入点

[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"FristTime"];

[[NSUserDefaults standardUserDefaults] synchronize];

}else

{

//切换到另一个 storyBoard 为入口

UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"FirstTabStoryboard" bundle:nil];

self.window.rootViewController = [storyBoard instantiateInitialViewController];

}

// Override point for customization after application launch.

return YES;

}