Can I Show A SplitViewController Using presentModalViewController? - objective-c

Question

I don't know if what I'm trying to do is possible, but because I haven't the desired results, I guess not.
What I'm trying and need to do is to call a SplitViewController from a previous ViewController, using presentViewController.
I know, SplitViewController have to be the rootViewController, but I need to explore the most possible options to achieve what I need to do.
I have a MainMenu with buttons, and with every button, I need to call a SplitViewController. First, how can do this?
What I'm trying to do is this:
First, in AppDelegate I'm calling the MainMenu, and add as a subview and other things:
-(BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[window addSubview:self.mainMenu.view];
[self.mainMenu presentModalViewController:self.firstMenu animated:NO];
[self.window makeKeyAndVisible];
return YES;
}
Then, in the MainMenu, I'm calling SecondViewController, in modal view, using this code:
SecondViewController *secV = [[SecondViewController alloc]initWithNibName:#"SecondViewController" bundle:nil];
secV.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:secV animated:YES];
In this SecondViewController, I'm creating SplitViewController, with Master & DetailViewController's, using this code:
-(void)viewDidLoad{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
UISplitViewController *splitViewController = [[UISplitViewController alloc]init];
SecondMenuViewController *secMenu = [[SecondMenuViewController alloc]init];
UINavigationController *navLef = [[UINavigationController alloc]init];
[navLef pushViewController:secMenu animated:NO];
SecondMainViewController *secMain = [[SecondMainViewController alloc]init];
UINavigationController *navRig = [[UINavigationController alloc]init];
[navRig pushViewController:secMain animated:NO];
splitViewController.delegate = secMain;
splitViewController.viewControllers = [NSArray arrayWithObjects:navLef, navRig, nil];
MainAppDelegate *mainApp = [[MainAppDelegate alloc]init];
[mainApp changeRootViewController:splitViewController];
navRig = nil;
navLef = nil;
secMain = nil;
secMenu = nil;
splitViewController = nil;
}
As you can see, I'm calling a method in MainAppDelegate, to change view and RootViewController, because SplitViewController have to be RootViewController. This is the method:
-(void)changeRootViewController:(UISplitViewController *)splitViewController{
[self.window addSubview:splitViewController.view];
self.window.rootViewController = splitViewController;
}
I know, this looks like a mess. And when I run, the SplitViewController never shows, so I assume, what I'm trying to do is not possible? Or In what I'm wrong?
If it is everything, what can I do to show a SplitViewController after my MainViewController?
I'm using XCode4.4 and iOS5
Thank you very much

Answer 1

A better way would be to make your UISplitViewController the root view controller in application:didFinishLaunchingWithOptions:. Then present your MainMenu on top of it. You can change the subviews displayed by the split view controller to correspond to what button the user pushes in your MainMenu.

Answer 2

First, didFinishLaunchingWithOptions: is too early to be calling presentModalViewController. You haven't even got an interface yet!
Second, you don't seem to have a root view controller (although perhaps you're getting one from a nib? you should probably stop doing that; use the techniques shown in the current application templates).
Third, note that now that we have custom container views, there is no need for you to use UISplitViewController at all; you can construct your own view / view controller hierarchy, and you might be happier doing so, since UISplitViewController is not a very well-constructed class.