Function Inside Prepareforsegue Will Not Execute

Function inside prepareForSegue will not execute

I responded to your last post as well, but You are sending an array of channels to

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    super.prepare(for: segue, sender: sender)
        if let channel = sender as? Channel {
        print("executed")
        let chatVc = segue.destination as! channelMultiplayerViewController
        chatVc.channel = channel
        chatVc.channelRef = channelRef.child(channel.id)
    }
}

So the block - if let channel = sender as? Channel - will not work.

Change the cell selection code to:

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    if indexPath.section == Section.currentChannelsSection.rawValue {
        if searchController.isActive && searchController.searchBar.text != "" {
            let channel = filteredChannels[indexPath.row]
            self.performSegue(withIdentifier: "ShowChannel", sender: channel)
                 }
        else
        {
            let channel = channels[indexPath.row]
            self.performSegue(withIdentifier: "ShowChannel", sender: channel)
        }
    }
}

prepareForSegue is not getting called when I click on a button without using performSegueWithIdentifier

Well, as it turns out, my view controller where button calls the modal view did not have the right class where prepareForSegue is implemented. It was the default UIViewController instead of my custom class.

The way I figured it out was by putting a break point in viewDidLoad and even that was not breaking and thus I suspected that in the storyboard I did not have the right class associated with the view where the button is implemented.

Variable is empty inside of prepareforsegue function

I have the tableview cell connected to the secondviewcontroller through a segue called "showStoreDetailsSegue".

That’s the problem. You are performing the segue twice, and the first time is before didSelect is called.

One solution: Connect the segue from the view controller, not the cell.

Alternatively (and better), delete your didSelect implementation itself. You don’t really need selectedStores. Just use prepare to find out what the selection is, and go from there.

swift 3 prepare(for segue: ) function broken?

Your method isn't getting called at all because you have the wrong signature. It was changed in Xcode 8 beta 6 to:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

Note that the type of sender is Any? instead of AnyObject?. You should have had an error after upgrading Xcode which told you your method wasn't overriding any method from its superclass which should have clued you in before you deleted the override.

Swift Prepare(for: segue) not called

You are calling performSegue on self.navigationController, so it's the navigationController.prepareForSegue that will be called, not the one in your VC. You should reconnect the segue to your VC in the storyboard, give it the identifier, and call:

self.performSegue(...)

Prepare for Segue function not passing data correctly

You sender is a new instance of UIButton which doesn't have any of the information you need. Instead pass the button calling the selector.

@objc func displayStatDetail(_ sender: StatisticButton) {
    self.performSegue(withIdentifier: "StatDetailSegue", sender: sender)
}

You would need to change the target selector like this in the loop.

statisticButton.addTarget(self, action: #selector(displayStatDetail(_:)), for: .touchUpInside)

PrepareforSegue function is never running, variables in additional view controller are blank

Your prepareForSegue is never called because you use presentViewController() function. It's simply push an other view controller.
A segue is a link between two view controllers in Storyboard, so you can add a segue in Storyboard between view controllers, set an ID to the segue and use performSegueWithIdentifier("mySegueID", sender: nil) instead.

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