Swift - Array of URLs not working

Question

I have three different arrays that hold information. One displays the section title, one displays the title of each cell, and one provides a link to the other viewController. I am using Swift btw.

But when I run it, all the cells use the first url in the array and not the rest of the url's.

Here is my code:

import UIKit

class FirstViewController: UIViewController, UITableViewDataSource, 
UITableViewDelegate {
    var headers = ["Bein Sports", "Sky Sports", "Alkass"]
    var channels = [["Bein Sports 1","Bein Sports 2","Bein Sports 3","Bein Sports 4","Bein Sports 5","Bein Sports 6","Bein Sports 7","Bein Sports 8","Bein Sports 9","Bein Sports 10","Bein Sports News"],
                    ["Sky Sports 1","Sky Sports 2","Sky Sports 3","Sky Sports 4","Sky Sports 5"], ["Alkass One", "Alkass Two", "Alkass Three", "Alkass Four", "Alkass Five"]]
    var links = ["https://google.ca","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"]
    var myIndex: IndexPath?


    func numberOfSections(in tableView: UITableView) -> Int {
        return headers.count
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return channels[section].count
    }

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return headers[section]
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = channels[indexPath.section][indexPath.row]
        return cell
    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        myIndex = indexPath
        performSegue(withIdentifier: "segue", sender: self)
    }
}

I'm sure someone will find what you're doing wrong, but this is like the easiest possible kind of issue to debug. You should take the opportunity to learn to use the debugger. Once your app crashes, read the contents of the stuff that causes it and you'll see the problem. If you cannot use the debugger to find the cause of this, you won't get too far doing any kind of app. — Fernando Mazzon
– Fernando Mazzon, Commented Jun 23, 2017 at 3:17
myIndex = [indexPath.section][indexPath.row] thats the line that seems to be faulty according to the debugger (it shows as green). — Karrar Al-Mimar
– Karrar Al-Mimar, Commented Jun 23, 2017 at 3:35
@KarrarAl-Mimar change your declaration to var myIndex: IndexPath? — Leo Dabus
– Leo Dabus, Commented Jun 23, 2017 at 3:35

Fernando Mazzon · Accepted Answer · 2017-06-23 03:19:23Z

1

myIndex = [indexPath.section][indexPath.row]

is missing the collection you want to subscript. You perhaps meant:

myIndex = channels[indexPath.section][indexPath.row]

answered Jun 23, 2017 at 3:19

Fernando Mazzon

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2 Comments

Fernando Mazzon Over a year ago

Don't "try it". Understand it, as your code is obviously not what you intended to write.

Karrar Al-Mimar Over a year ago

I am beginner to swift, learning off internet sources. I realized, it has to do with something on that line because when I remove the 'indexPath.section' on the line you referred to, it runs without an error but all the cells go to the same first link. Could you tell me another possibility because I don't know how to add the missing part.

Dharma · Accepted Answer · 2017-06-23 04:15:12Z

Seems you didn't used links array anywhere in your code.I didn't check this code hope it will work

let url:URL = URL(string: "http://google.ca")!

So the above url loaded statically while clicking all links which you provide in cell.

First add a variable to get selected cell link url in ChannelController.

let selcetedLink:String = ""

While performing segue in didSelectRowAt method pass corresponding url from link.To do that you need to override prepareForSegue add below code in your FirstViewController

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
   if segue.identifier == "segue" { // check your segue identifier
      let theDestination = (segue.destinationViewController as ChannelController)
      theDestination.selcetedLink = self.links[myIndex.row]
    }
}

Finally use the selectedLink value to load URL request

let url:URL = URL(string: selectedLink )!

KKRocks · Accepted Answer · 2017-06-23 05:14:42Z

Try possible solution.

You need to define both same as below .

var channels = [["Bein Sports 1","Bein Sports 2","Bein Sports 3","Bein Sports 4","Bein Sports 5","Bein Sports 6","Bein Sports 7","Bein Sports 8","Bein Sports 9","Bein Sports 10","Bein Sports News"],["Sky Sports 1","Sky Sports 2","Sky Sports 3","Sky Sports 4","Sky Sports 5"], ["Alkass One", "Alkass Two", "Alkass Three", "Alkass Four", "Alkass Five"]]

var links = [["https://google.ca","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"],["https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"],["https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"]]

Get url as below

linkurl = links[indexPath.section][indexPath.row] as String

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