Ios UISplitViewController和CoreData

我正在从事一个项目，该项目在文件夹和文件之间使用CoreData一对多关系。为了显示这一点，我使用的是UISplitViewController，文件夹显示在MasterView上，单击每个文件夹，文件显示在DetailView上。文件夹和文件都是动态添加的

我用这种方式编程创建了UISPlitViewController

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

       FolderViewController = [[FolderViewController alloc] initWithNibName:@"FolderViewController_iPad" bundle:nil];


        UINavigationController *masterNavigationController = [[UINavigationController alloc] initWithRootViewController:FolderViewController];
        FolderViewController.managedObjectContext = self.managedObjectContext;

        fileViewController = [[fileViewController alloc] initWithNibName:@"fileViewController_iPad" bundle:nil];
        UINavigationController *detailNavigationController = [[UINavigationController alloc] initWithRootViewController: fileViewController];

        FolderViewController.fileViewController = fileViewController;

        self.splitViewController = [[UISplitViewController alloc]init];
        self.splitViewController.delegate = fileViewController;
        self.splitViewController.viewControllers = @[masterNavigationController, detailNavigationController];

        self.window.rootViewController = self.splitViewController;

}

- (void)Buttonclick
{

AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];       
        testViewController = [[EditViewController alloc] initWithNibName:@"EditViewController" bundle:nil];
        m_editViewController.modalPresentationStyle = UIModalPresentationFormSheet;

        [appDelegate.splitViewController presentModalViewController:m_editViewController animated:YES];
}

这将我的ipad一分为二。左侧是FolderViewController，右侧是FileViewController

我的主视图在任何方向上都不会隐藏

我在Master和DetailView上都有一个按钮，可以通过splitViewController以这种方式打开common EditViewController

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

       FolderViewController = [[FolderViewController alloc] initWithNibName:@"FolderViewController_iPad" bundle:nil];


        UINavigationController *masterNavigationController = [[UINavigationController alloc] initWithRootViewController:FolderViewController];
        FolderViewController.managedObjectContext = self.managedObjectContext;

        fileViewController = [[fileViewController alloc] initWithNibName:@"fileViewController_iPad" bundle:nil];
        UINavigationController *detailNavigationController = [[UINavigationController alloc] initWithRootViewController: fileViewController];

        FolderViewController.fileViewController = fileViewController;

        self.splitViewController = [[UISplitViewController alloc]init];
        self.splitViewController.delegate = fileViewController;
        self.splitViewController.viewControllers = @[masterNavigationController, detailNavigationController];

        self.window.rootViewController = self.splitViewController;

}

- (void)Buttonclick
{

AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];       
        testViewController = [[EditViewController alloc] initWithNibName:@"EditViewController" bundle:nil];
        m_editViewController.modalPresentationStyle = UIModalPresentationFormSheet;

        [appDelegate.splitViewController presentModalViewController:m_editViewController animated:YES];
}

当我关闭此视图时，我会相应地添加文件夹或文件

我以这种方式驳斥这种观点

[self dismissModalViewControllerAnimated:YES];

我在这里没有什么疑问

1） 当我启动应用程序时，来自两个视图控制器的所有imp（主）函数都会被调用。可以吗

2） 当我在从DetailView打开时关闭此ModalView时，会调用NSFetchResultsController的委托函数，这些函数位于MasterView中。可以吗

3） 在调用这些函数时，我的逻辑在某些情况下会失败

问候

---

你问题中的Ranjit（第1点）没有意义。你能详细说明视图控制器的主要功能吗？你的意思是它们都是被创建的，并且调用了“init…”吗？我的意思是ViewDidLoad和ViewWillDisplay。这些方法都是由框架自动调用的，应该在加载和显示视图时调用它们。