CODEWITHSUNDEEP
iosobjective-cuinavigationcontrollerappdelegate
Sean Cleveland
Sean Cleveland

Reputation: 143

ios-How do I add a navigation controller to a project?

I have a project and I am having trouble maintaining a navigation controller (which I added through the interface builder). I want to set up a hierarchy because it is saying the views are not added to the window hierarchy. I can move between one view using performSegueWithIdentifier, but using it a second time doesn't work. The problem is it won't allow me to move from one view to another. I have read stuff about messing with the appdelegate or add performForSegue, but I don't know how to using it.

Any suggestions for if I had three views connected like 1 -> 2 -> 3? 1 and 2 would have performSegueWithIdentifier.

Please and thank you!

Here is my storyboard: http://s1370.photobucket.com/user/sean_cleveland1/media/Untitled_zpsc9022523.png.html?o=0

Here is my performSegueWithIdentifier functions:

//Used in FirstVC.
[self performSegueWithIdentifier: @"firstToSecond" sender: self];
//Used in SecondVC... this doesn't work!
[self performSegueWithIdentifier: @"secondToThird" sender: self];

Upvotes: 2

Views: 223

Answers (3)

codercat
codercat

Reputation: 23271

First define your third view identifier

enter image description here

- (void)segue
{

    [self performSegueWithIdentifier:@"mySegue" sender:self];

}

for only do any condition or operation use below method

 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if([[segue identifier] isEqualToString:@"mySegue"]) {


    }
}

i created simple sample project for you

https://github.com/iDevAndroid/NavigationSample

enter image description here

try with this. because your are perform model transaction after next line your are using dismiss the model. 

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{



    [self becomeFirstResponder];
        [self dismissViewControllerAnimated:YES completion:^{
[self emailDelivaryedSuccessfully];
];

}



-(void)emailDelivaryedSuccessfully{


        [self performSegueWithIdentifier: @"secondToThird" sender: self];
}

Upvotes: 1

bhavya kothari
bhavya kothari

Reputation: 7474

Your StoryBoard

Just Control + drag from "Pop to Main Screen" UIButton to Exit (green button at bottom of scene) select unwind method declared in first screen with title "Main" e.g.

-(IBAction)customUnwind:(UIStoryboardSegue *)sender
{

NSLog(@"Unwind successful");

}

Upvotes: 2

Suhit Patil
Suhit Patil

Reputation: 12023

You don't need to use performSegueWithIdentifier: if you are doing it in Storyboard, just comment the code which says performSegueWithIdentifier: and prepareForSegue: method in your code and try. If you are using performSegueWithIdentifier: then you need to implement prepareForSegue: method also. ex. 

[self performSegueWithIdentifier: @"firstToSecond" sender: self];

//prepareforsegue method

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    if([[segue identifier] isEqualToString:@"firstToSecond"]) {

        SecondViewController *destinationController = [segue destinationViewController];
       //set data if any
    }
}

Upvotes: 0

Related Questions