How to do circular and complex navigations? - ios

Question

In my program have 6 view controllers.(in storyboard)
Lets define 1,2,3,4,5,6.
1 is my main view.
I want to navigate like this(image bellow).Is it possible to do?
give me a idea to do this navigation.

Answer 1

Yes, u can implement this. This is a simple navigation in iOS using NavigationController.
you have six viewControllers 1, 2, 3, 4, 5, 6.
to do this:
First create a NavigationController and initialize it with ViewController 1 (ie a root View Controller).
Now your navigationController behaves like a stack which contains all ur pushed view controller. NavigationController is only push and pop ur view controllers.
So, every time when u want to navigation first check ur viewController is inside navigationController stack or not. If it is already in stack then pop to that controller, if not then push the same view controller.
for this use following:
In case ViewController3
-(void)popToSelectedViewController
{
NSArray *vc=[self.navigationController viewControllers];
ViewController3 *vc3=nil;
for (int i=0; i<[vc count]; i++)
{
UIViewController *tempVC=[vc objectAtIndex:i];
if([tempVC isKindOfClass:[ViewController3 class]])
{
vc=[vc objectAtIndex:i];
break;
}
}
if(vc3)
{
//If exists inside stack the pop
[self.navigationController popToViewController:vc3 animated:YES];
}
else
{
//If not exists inside stack push ViewController3
ViewController3 *vc3New= [[ViewController3 alloc]initWithNibName:#"ViewController3" bundle:nil];
[self.navigationController pushViewController:vc3New animated:YES];
[vc3New release];
}
}
For initializing ur ViewController1 with navigationController:
if using storyboard
Embed ur initialViewController(ie viewController3) with UINavigationController.
for this:
Step1: open storyboard, and select ur initialViewController(ie viewController3).
Step2: Go to Editor in menu -> Choose Embed In -> Select UINavigationController.
this creates a navigationcontroller and initializes with viewController3 as rootViewController.
if not using storyboard
make property of vc3 (ViewController3) and applicationNavigationController (UINavigationController) in .h
and in .m:
got method "application... didFinishedLaunching...." in appDelegate
and write:
self.vc3=[[ViewController3 alloc]initWithNibName:#"ViewController3" bundle:nil];
self.applicationNavigationController=[[UINavigationController alloc] initWithRootViewController:self.vc3];
self.window.rootViewController=self.applicationNavigationController;
[self.window makeKeyAndVisible];

Answer 2

First You create a navigation controller object
UINavigationController *navCtrl = [[UINavigationController alloc]initWithRootViewController:rootViewController];
self.window.rootViewController = navCtrl;
If you want to go to 1->2,1->3,1->6,etc, create an object for the next viewcontroller and push it to navigation stack
[self.navigationController pushViewController:second animated:YES];
You dont need to do any additional work to go back to the previous view controller. The default back button lets you go back.
If you need to return to the root view controller, then use this:
[self.navigationController popToRootViewControllerAnimated:YES];
if you want to return to any particular view controller, then use this
[self.navigationController popToViewController:viewController animated:YES];

Answer 3

Use UINavigationController.It is nor circular.It can be assumed as stacked approch.That is what navigation controller do
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