uiTableView in uiViewController: something's missing - ios

Question

I need a toolbar underneath my table so here I am.
xcode 7.3.1
Swift 2
I've got a Table View added to a basic View Controller.
I dragged the delegate and datasource outlets from the table view to the view controller in storyboard.
I dragged a table cell to my table view. I set my reuseIdentifier to "cell"
I set the cell type to Details
Table type is Plain
Here's my customized View Controller class (it has explanatory comments throughout):
import Foundation
import UIKit
import SwiftyJSON
import Alamofire
class ScheduleViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
let cellIdentifier = "cell" // also tried: let cellIdentifier = "cellIdentifier"
#IBOutlet var tableView: UITableView!
var Titles:Array< String > = Array < String >()
var Details:Array< String > = Array < String >()
override func viewDidLoad() {
super.viewDidLoad()
var height = UIApplication.sharedApplication().statusBarFrame.size.height
var insets = UIEdgeInsets(top: height, left: 0, bottom: 0, right: 0)
/* if any of the following four lines are not commented out it throws an error after successful build, in simulator: fatal error: unexpectedly found nil while unwrapping an Optional value */
// self.tableView.contentInset = insets
// self.tableView.scrollIndicatorInsets = insets
// self.tableView.separatorColor = UIColor.grayColor();
// self.tableView.separatorStyle = UITableViewCellSeparatorStyle.SingleLine;
manager.request(.POST, getUrl(), parameters:["dev": 1]).responseJSON {response in
print(response)
var json = JSON(response.result.value!);
print(json)
if !json["logged_in"]
{
self.performSegueWithIdentifier("LoginController", sender: self)
return;
}
for (_,subJson):(String, JSON) in json["shifts"]
{
self.Titles.append(subJson["title"].string!);
self.Details.append(subJson["detail"].string!);
}
// everything in this async function goes swimmingly until the next line
self.do_table_refresh();
// see do_table_refresh function for error detail
}
}
func do_table_refresh()
{
dispatch_async(dispatch_get_main_queue(), {
self.tableView.reloadData() /* < this line here throws the same error as the four lines mentioned above: "fatal error: unexpectedly found nil while unwrapping an Optional value." it builds fine (no error indicated until the simulator gets to the point of running the function) */
return
})
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return Titles.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
cell.textLabel?.text = Titles[indexPath.row]
cell.detailTextLabel?.text = Details[indexPath.row]
if Details[indexPath.row] == "OFF"
{
cell.textLabel!.textColor = UIColor(red: 214/255, green: 214/255, blue: 214/255, alpha: 1)
cell.detailTextLabel!.textColor = UIColor(red: 214/255, green: 214/255, blue: 214/255, alpha: 1)
}
else
{
cell.textLabel!.textColor = UIColor(red: 0/255, green: 0/255, blue: 0/255, alpha: 1)
cell.detailTextLabel!.textColor = UIColor(red: 0/255, green: 0/255, blue: 0/255, alpha: 1)
}
return cell
}
}
These functions all work fine when I'm using a TableView Controller, but I need a toolbar.
Any one of the following five lines (the first four found in the viewDidLoad function and last in the do_table_refresh function), the app will fail (after successful build) with: fatal error: unexpectedly found nil while unwrapping an Optional value
// self.tableView.contentInset = insets
// self.tableView.scrollIndicatorInsets = insets
// self.tableView.separatorColor = UIColor.grayColor();
// self.tableView.separatorStyle = UITableViewCellSeparatorStyle.SingleLine;
// self.tableView.reloadData()
Back in the Table View Controller, these lines don't give me that error, so I'm assuming something is empty in tableView.
What am I overlooking?

Answer 1

Inside your viewDidLoad() method, you need to add the delegate and dataSource to link your table to the view controller.
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableview.dataSource = self
}

Answer 2

Try this.
dispatch_async(dispatch_get_main_queue(),{
self.do_table_refresh();
})