Swift Table View Controller Segue无法自动运行

Question

Steps taken:

1. Created new single view project
2. Deleted default view controller
3. Added new Table View Controller
4. Embedded TVC into a Navigation Controller
5. Added a child TVC
6. Added custom class files and associated to each TVC
7. Created a Show segue from the first TVC to the child
8. Implemented required methods, #of sections, # of rows, cellForRowAtIndexPath

All of the tutorials I have watched and read online only include the steps I show above, and the segues start working fine. However, in my case I can not get it to work until I add the following:

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        performSegueWithIdentifier("detail", sender: tableView)
}

I'm totally fine with implementing the didSelectRowAtIndexPath method if it is required. I'm just wondering if I am missing something, because it seems to work automatically in everything I've seen online.

Thanks in advance!

Answer 1

If you click on the segue (storyboard) and on the side menu you have to assign the text "detail" from

performSegueWithIdentifier("detail", sender: tableView)

on the Identifier field.

Like the image below

Edit:

Try the code above, rembember to change NAME_OF_THE_DETAIL_VIEW_CONTROLLER to your Detail ViewController.

In this code we set i set " self " before the performSegueWithIdentifier . And when the button is clicked you set the segue.destinationViewController to your new ViewController.

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    self.performSegueWithIdentifier("detail", sender: indexPath);
}


override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
    if (segue.identifier == "detail") {
        var detailView =  segue.destinationViewController as! NAME_OF_THE_DETAIL_VIEW_CONTROLLER 
    }
}

Answer 2

Thank you all for your contributions. I figured out that the problem was the following was missing from the cellForRowAtIndexPath tableView function.

let cell = self.tableView.dequeueReusableCellWithIdentifier("custom", forIndexPath: indexPath) as! CustomCell

I had this line commented out, mostly because I have no idea what it does. :)