I have three arrays to make a tableView and a second ViewController. One displays headers for each section on the tableView, one displays titles, and one has the links for each cell. When I build and tap on one of the cells I get:
fatal error: unexpectedly found nil while unwrapping an Optional value
on this line:
let url = URL(string: websiteURL)!
Now I believe this is because my prepareForSegue is not working, which means it's not sending over the array data to the second View Controller(ChannelViewController). I also tested this by, adding
print("hello")
to the prepareForSegue function and seeing if "hello" appears in the debugger. But it didn't.
So I'm guessing the main problem is making the prepareForSegue do what it's supposed to do.
Here is the FirstViewController code:
import UIKit
class FirstViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var headers = ["Bein Sports", "Sky Sports", "Alkass", "Other"]
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"],
["BT Sports 1", "BT Sports 2", "Real Madrid TV", "Real Madrid TV 2"]]
var links = [["https://www.google.ca","https://www.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"],
["http://twitter.com","http://facebook.com","http://www.google.com","http://www.instagram.com"]]
var myIndex : IndexPath = IndexPath()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return channels[section].count
}
func numberOfSections(in tableView: UITableView) -> Int {
return channels.count //Rows
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return headers[section] //Sections
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = channels[indexPath.section][indexPath.row] //TextLabel
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
myIndex = IndexPath(row: indexPath.section, section: indexPath.row)
performSegue(withIdentifier: "segue", sender: self)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
if (segue.identifier == "segue") {
let viewController = segue.destination as! ChannelViewController
// Now you have a pointer to the child view controller.
// You can save the reference to it, or pass data to it.
viewController.websiteURL = links[myIndex.section][myIndex.row]
print("google")
}
}
}
Here is the second View Controller code:
import UIKit
import WebKit
import AVKit
import AVFoundation
class ChannelViewController: UIViewController {
var webView: WKWebView!
var websiteURL = ""
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
webView = WKWebView()
webView.scrollView.isScrollEnabled = false
view.addSubview(webView)
let url = URL(string: websiteURL)!
let req:URLRequest = URLRequest(url: url)
webView.load(req)
webView.translatesAutoresizingMaskIntoConstraints = false
let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: view, attribute: .width, multiplier: 1.0, constant: 0) //Constraints
let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: view, attribute: .height, multiplier: 1.0, constant: 0)
view.addConstraints([width,height]) //Constraints
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
