CODEWITHSUNDEEP
iosxcodeswiftios8segue
JMicro
JMicro

Reputation: 3

Segue is not performed iOS8

I am using XCode 6, targeting iOS 8 and coding this in Swift.

My storyboard controllers look like this:

Tab Bar > Navigation > Table View > Detail View

The Show Detail segue is from a Table Cell to the Detail View.

The prepareForSegue method is not triggered when clicking a table cell. Segue from a button to detail works fine, though. performSegueWithIdentifier in didSelectRowAtIndexPath also works fine.

I have also created a brand new test project to test this issue - the controller code looks like this:

import UIKit

class TestTableController: UITableViewController
{
    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        return 2;
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
    {
        let cellId = "testCell";
        var cell: UITableViewCell? = tableView.dequeueReusableCellWithIdentifier(cellId) as? UITableViewCell;

        if (cell == nil)
        {
            cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: cellId);
        }

        cell!.textLabel!.text = "cell \(indexPath.item)";

        return cell!;
    }
}

Any idea why this does not work out of the box?

P.S.: when using Split View instead of a Tab Bar, the same segue works fine.

Upvotes: 0

Views: 755

Answers (3)

atish vishwakarma
atish vishwakarma

Reputation: 201

This happened with me when I was registering cell in ViewDidLoad method using tableView.register(AnyClass?, forCellReuseIdentifier: String) When i commented this line and added the cell class and cell identifier in storyboard, it started working. Again if I uncomment that code in viewdidload, it stops working.

Upvotes: 1

Saurabh Prajapati
Saurabh Prajapati

Reputation: 2380

for calling the method prepareForSegue you must have to add a segue to connect the prototype cell and the destination Controller! method doesn't called if you navigate to destination controller programmatically!

Upvotes: 0

Mundi
Mundi

Reputation: 80271

I just tested it with a sample project. It works fine. There must be something wrong with your wiring up the cell.

Here is my code. Only indicating changes from plain vanilla tab bar project template.

enter image description here

// FirstViewController.swift
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 2
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    var cell = tableView.dequeueReusableCellWithIdentifier("Cell") as UITableViewCell
    cell.textLabel?.text = "Cell \(indexPath.row + 1)"
    return cell
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    let detail = segue.destinationViewController as DetailController
    let cell = sender as UITableViewCell
    let indexPath = self.tableView.indexPathForCell(cell)
    detail.detailItem = "Cell \(indexPath!.row + 1)"
}

//DetailController.swift
class DetailController: UIViewController {

    var detailItem : String!
    @IBOutlet var label : UILabel!

    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)
        label.text = detailItem
    }
}

Upvotes: 0

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