在故事板ios7中添加视频作为启动

Question

我想在应用程序启动开始时显示一个视频，就像启动一样。我的整个应用都将在导航中。首先，我在splashViewController中添加视频，并在appDelegate中将其设置为rootView，然后再次将mainViewController设置为rootView。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
    splashViewController = [[SplashViewController alloc] init];
    splashViewController = (SplashViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:@"SplashViewController"];
    self.window.rootViewController = splashViewController;

    [NSTimer scheduledTimerWithTimeInterval:9.0 target:self selector:@selector(removeSplashScreen:) userInfo:nil repeats:NO];

    return YES;
}

-(void)removeSplashScreen:(id)userInfo
{
    [splashViewController removeFromParentViewController];

    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
    mainViewController = [[MainViewController alloc] init];
    mainViewController = (MainViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:@"MainViewController"];
    self.window.rootViewController = mainViewController;
}

现在我想从这个mainViewController开始导航。我使用storyBoard＆amp;在mainViewController中添加Editor > Embed in > Navigation Controller的导航。不要以编程方式执行此操作。但我知道使用Nib.xib实现它的方法。在这里，我还添加了arrow（表示起始VC的箭头）标记。但是当我从mainVC点击一个按钮进入下一个VC时它会崩溃。我如何在这里设置导航？

如果有人有答案，请与我分享。非常感谢提前。

我的故事板的场景：

Answer 1

确定尽管我的建议（在评论中），但您可以通过以下方式实现这一目标：

显示启动：

//StoryBoard
UIStoryboard *mainStoryboard = [UIStoryboard 
                                   storyboardWithName:@"Main" bundle: nil];
//Splash Controller                                
SplashViewController *splashViewController = [mainStoryboard 
                instantiateViewControllerWithIdentifier:@"SplashViewController"];
//Show it                                 
[self.window.rootViewController presentViewController:splashViewController 
                                             animated:NO completion:nil];

删除它：

[self dismissViewControllerAnimated:YES completion:nil];

---

编辑：仍然没有工作？

也许你叫它快。这样做：

<强> viewDidLoad中：

   [NSTimer scheduledTimerWithTimeInterval:9.0 
                                    target:self 
                                  selector:@selector(removeSplashScreen:) 
                                  userInfo:nil repeats:NO];

删除功能：

-(void)removeSplashScreen:(id)userInfo
{
   [self dismissViewControllerAnimated:YES completion:nil];
}

Answer 2

很高兴通过两个步骤为您提供帮助

步骤1-        你的didFinishLaunchingWithOptions代码几乎是正确的，但它的工作原理并不重要。所以让我们专注于第二步。

第2步 - （void）removeSplashScreen：（id）userInfo

   -first line is good , but you even dont need it because you are going to switch the   root controller (leave it for now)
   - second line (no need to write it)
   - third line is really bad , what you  doing here is trying to alloc you mainviewcontroller. really you need it with storyboard? no 
   - you should load you main view controller from storyboard
   MainViewController* mainViewController = (MainViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:@"MainViewController"];

“此行足以从故事板加载主视图控制器”        - 下一行是正确的       self.window.rootViewController = mainViewController;       代码似乎现在正在工作，但你仍然缺少导航控制器，因为你已经从故事板加载了mainviewcontroller，而不是导航控制器。

- two solution for it
1- load navigation controller in place of mainviewcontroller(give a storyboard id to navigation controller , load it , and make it as root controller) --i will always go with it
2- make a navigation controller with allocating it & make its rootviewcontroller the mainviewcontroller

-----------------工作代码---------------

Answer 3

所以解决方案，根据pawan给出的答案是：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
    splashViewController = (SplashViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:@"SplashViewController"];
    self.window.rootViewController = splashViewController;

    [NSTimer scheduledTimerWithTimeInterval:9.0 target:self selector:@selector(removeSplashScreen:) userInfo:nil repeats:NO];

    return YES;
}

-(void)removeSplashScreen:(id)userInfo
{
    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
    mainViewController = [[MainViewController alloc] init];
    mainViewController = (MainViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:@"MainViewController"];

    navigationContoller = [[UINavigationController alloc] initWithRootViewController:mainViewController];
    self.window.rootViewController = navigationContoller;
}

：）