creating push segue programatically and prepareforsegue method

Question

i have a button that is created programmatic and i need to perform a segue on click that will send data with prepareForSegue, but this code wont trigger it.

UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
UIViewController * vc = [mainStoryboard instantiateViewControllerWithIdentifier:@"AddToCalendarViewController"];

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

i have tried this:

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

but since the button is created grammatically i don't have any segue identifier to call, and using the following to create it did not work

UIStoryboardSegue * segue = [[UIStoryboardSegue alloc] initWithIdentifier:@"addtoCalendar" source:self destination:vc];

So is your problem that you aren't able to pass data or that you can't get it to segue to the next ViewController? — Bryan Linton, Sep 30 '14 at 15:51
There are other ways to present a view controller besides a segue. — CrimsonChris, Sep 30 '14 at 15:52
the segue works, but it wont trigger the prepareForSegue to send the data. I wanted to use segue because i wanted to keep the navigation bar from the previews controller, and that was the only away i know so far. (i started objective-c 1 month ago) — rob180, Sep 30 '14 at 15:55

score 2 · Accepted Answer · answered Sep 30 '14 at 15:51

2

UIStoryboardSegue must not be created programmatically. Create a segue by connecting your view controller to the destination view controller in the storyboard and put its identifier to @"addToCalendar" (always in the storyboard). Then call it as you are already doing.

answered Sep 30 '14 at 15:51

DeFrenZ

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but i dont have the button created on the view. from where will a start the segue? – rob180 Sep 30 '14 at 15:54
from the `UIViewController` that will perform it! That is how programmatically called segues must be created. – DeFrenZ Sep 30 '14 at 15:59
Segues can be created programmatically. See here: http://stackoverflow.com/a/16710737/142358 – Steve Moser Apr 15 '16 at 16:41

NRitH · Answer 2 · 2014-09-30T16:14:18.230

If you don't have an actual storyboard segue to call when the button is pressed, then you need to call addTarget:action:forControlEvents, where action is a selector to the method on target to be called.

Specifically, you first need to create a method to push the destination view controller, like so:

- (void)addToCalendar {
    DestinationiewController * vc = [[DestinationViewController alloc] initWithNibName:@"destinationViewController" bundle:nil;
    [self.navigationController pushViewController:vc animated:YES];
}

and then in your source view controller's viewDidLoad (or wherever you're programmatically instantiating the button), you need to add

[self.button addTarget:self action:@selector(@"addToCalendar") forControlEvents: UIControlEventTouchUpInside];

which will call the addToCalendar method you defined above.

can you exemplify? sorry but i did not get it. – rob180 Sep 30 '14 at 15:58 — rob180, Sep 30 '14 at 15:58

creating push segue programatically and prepareforsegue method

2 Answers2