iOS SplitView Controller, Programatically Change View With Multiple Storyboards

Subclass UISplitViewController and set your root splitViewController to that class. Then add this method to your UISplitViewController subclass:

-(void)setDetailControllerTo:(UIViewController *)detailController withNavControllerTitle:(NSString *)title {
    [detailController view]; // this line forces the viewDidLoad method to be called

    if (title) {
        UINavigationController *navController = [[UINavigationController alloc] init];
        [navController pushViewController:detailController animated:YES];
        detailController.title = title;

        NSArray *viewControllers=@[self.mainController.viewControllers[0],navController];
        self.mainController.viewControllers = viewControllers;
    } else {
        NSArray *viewControllers=@[self.mainController.viewControllers[0],detailController];
        self.mainController.viewControllers = viewControllers;
    }
}

To call this method do something like this from the master view controller:

FixedSplitViewController *splitController = (FixedSplitViewController*) self.splitViewController;

CurrentEventViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"CurrentEventViewController"];
// add any setup code here
[splitController setDetailControllerTo:controller withNavControllerTitle:@"Current Event"];

A lot of my projects require the splitviewcontroller to always show the master view so I use this subclass to keep the master view from hiding on portrait rotation.