CODEWITHSUNDEEP
iosswiftsegueuistoryboard
phoebus
phoebus

Reputation: 1329

Perform segue programmatically and still have it in the storyboard

I want to segue from a tableview that is embedded in a navigation controller to another view controller once I clicked on a table cell. I still want that second view controller to be embedded in the same navigation controller. Hence, I created the segue via storyboard.

However, I want to conditionally check after tapping on the cell if the segue should be performed or not.

I already checked out the method shouldPerformSegueWithIdentifier, which would satisfy my needs, but unfortunately, it is executed before the table click handler. If I remove the storyboard segue and just segue via performSegue, my second view controller is not embedded in the same navigation controller anymore.

Any advice?

Here's my code:

// Called on click event on table cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)
    let app = apps[indexPath.section]
    if app.state == .INSTALLED {
        let inputVC = self.navigationController?.viewControllers[1] as? InputVC
        inputVC?.app = app
        performSegue(withIdentifier: "showAccSync", sender: self)
    } else {
        // show alert
    }
}

Upvotes: 2

Views: 4921

Answers (3)

Catherine
Catherine

Reputation: 682

Programmatically, you can do like this

let lvc = storyboard?.instantiateViewController(withIdentifier: "yourViewController") as? yourViewController 
self.navigationController?.pushViewController(lvc, animated: true)

Upvotes: 1

Ankit Jayaswal
Ankit Jayaswal

Reputation: 5689

Assign storyboard identifier to your InputVC, Say "input_vc". Then instantiate it with storyboard. Then push to your InputVC it would be on same navigation stack.

enter image description here

Add the code in didSelectRow as:

Then instantiate your InputVC with storyboard. Then push to your InputVC it would be on same navigation stack.

guard let inputVC = storyboard?.instantiateViewController(withIdentifier: "input_vc") as? InputVC else { return }
inputVC.app = app
self.navigationController?.pushViewController(secondVc, animated: true)

Upvotes: 1

glyvox
glyvox

Reputation: 58129

You should start the storyboard segue from the view controller itself instead of a cell. That way, it won't execute automatically if you tap on a cell.

segue from view controller

If you want to push the view controller to the navigation stack without using a storyboard segue, use UINavigationController's pushViewController:

if let secondVc = storyboard?.instantiateViewController(withIdentifier: "Second") {
    navigationController?.pushViewController(secondVc, animated: true)
}

Upvotes: 8

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