viewController management programmatically - objective-c

Question

I have a problem about viewController. I created a program What is viewController based applicaiton. There is 4 button on mainViewController. I used this code for calling mainviewController
-(void) applicationDidFinishLaunching:(UIApplication *)application{
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
}
Then click to any button on homePage , I go to the other viewController. This code for call another viewController belong
-(IBAction)clickCalendarButton{
calendarButton.selected=YES;
[calendarButton
setImage:[UIImage imageNamed:#"afvalkalender_pressed.png"] forState:(UIControlStateHighlighted+UIControlStateSelected)];
GarbageCalendar *garbageCalendar = [[GarbageCalendar alloc] initWithNibName:#"GarbageCalendar" bundle:nil];
[self presentModalViewController:garbageCalendar animated:YES];
}
And then I want to go home page from another viewController. But I didn' go home page viewController.

Answer 1

Create button on detail view controller, which calls something like this:
- (IBAction)goBack {
[self dismissModalViewControllerAnimated:YES];
}

Answer 2

If you want to keep your current UI design, based on modal view controllers, then I think you should ensure that your other view controllers have got a button that does the dismiss of the view. Say, e.g., a "Back" or "Done" button. When you click on that button, a delegate method is called that executes: [self dismissModalViewControllerAnimated:YES];
Look also at this document for more info, section "Dismissing a Modal View Controller".
If you would like to consider alternative approaches to your UI, you could look into using a UINavigationController, which would make your life a little bit easier with navigating back from one controller to another.