How to get the navigation bar on view controller? - ios

Question

I have three View controller A,B,C.I have navigation controller attached to A view controller.In A i have some buttons,I have attached the button segue to B view controller.Onclick of the button i go to the B view controller.On B View controller i have UITableView on click of table view item i am launching the C view controller.below is the code for that
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row==0)
{
NSLog(#"first cell");
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
[self presentViewController:vc animated:YES completion:nil];
}
else if(indexPath.row==1)
{
NSLog(#"second cell");
}
else if(indexPath.row==2)
{
NSLog(#"third cell");
}
}
But on C view controller the navigation Bar is not appearing.I think C view controller is not linked to the Navigation Controller.

Answer 1

You use navigationController push method to display navigation bar in C viewController
try this code:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
[self.navigationController pushViewController:vc animated:YES];

Answer 2

Use the code below
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
UINavigationController *nav=[[UINavigationController alloc] initWithRootViewController:vc];
[self presentViewController:nav animated:YES completion:nil];
You need to present it using UINavigationController as modal.
Hope it helps.

Answer 3

use this:
[self.navigationController pushViewController:vc animated:YES];

Answer 4

You can use "Push" segue and embed your ViewController in Navigation Controller, and then use its Navigation Controller's functions like pushViewController and popViewControllerAnimated

Answer 5

Answer are all correct, but i just want to explain things..
//This line gets the storyboard with the name "Main" which contains all
//the setup you made for UI (User interface)
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
//While this like gets the view inside your storyboard with
//storyboard ID/indentifier `BusinessCard `
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
//Lastly, this line is correct presenting the viewcontroller BUT this doesn't add your
//viewcontroller to the array of viewControllers inside navigationController
//
//Also, this line makes you present the viewController above the
//rootViewController of window which is in your case the navigationController
//
This is you Error
[self presentViewController:vc animated:YES completion:nil];
//This is what you are looking for, and the correct one for your implementation
//
//This will let you add the `vc`(viewController) to the array of viewController
//in navigationController, to confirm that you can check the `self.navigationController.viewControllers`
//which will return the array of viewController inside your navigationController
This is the Answer
[self.navigationController pushViewController:vc animated:YES];
Hope this helps you, and my explanation is apprehendable.. Cheers