Getting error after initialising json api in swift - arrays

Question

I got everything working so far. When building the project and running the function it parses the api content and then crashes.
Here is the code:
//
// GamesTableViewController.swift
// Football Life
//
// Created by David Seyboth on 18/01/16.
// Copyright © 2016 David Seyboth. All rights reserved.
//
import UIKit
class GamesTableViewController: UITableViewController {
// MARK: Properties
var gameplan = [Games]()
override func viewDidLoad() {
super.viewDidLoad()
//load NFL Games
loadNFLgames { (result) -> () in
self.gameplan = result
dispatch_async(dispatch_get_main_queue(),{
self.tableView.reloadData()
})
}
}
func loadNFLgames(completionClosure: (result : [Games]) ->()){
let queue: dispatch_queue_t = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
dispatch_async(queue, {
let URL = "http://www.fantasyfootballnerd.com/service/schedule/json/test/"
print(URL)
if let data = NSData(contentsOfURL: NSURL(string: URL)!){
if let JsonObject = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSMutableDictionary{
print(JsonObject)
let homeTeam = JsonObject["homeTeam"] as! String
let awayTeam = JsonObject["awayTeam"] as! String
let gameDate = JsonObject["gameDate"] as! String
let gameTimeET = JsonObject["gameTimeET"] as! String
let tvStation = JsonObject["tvStation"] as! String
let api_guest = awayTeam
let api_home = homeTeam
let api_tvhost = tvStation
let api_time = gameDate + ", " + gameTimeET + " ET" // convert gameDate to day e.g. SUN
let api_stadion = "N/A"
// prepare data for array
let gamedata = Games(participants: api_guest+" # "+api_home, photoguest: UIImage(named: api_guest), photohome: UIImage(named: api_home), time: api_time, stadium: api_stadion, channel: api_tvhost)!
self.gameplan.append(gamedata)
completionClosure(result: self.gameplan)
}
}
})
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return gameplan.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "GamesPrototypeCell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! GamesTableViewCell
// Fetches the appropriate meal for the data source layout.
let game = gameplan[indexPath.row]
cell.participants_label.text = game.participants
cell.photoguest_image.image = game.photoguest
cell.photohome_image.image = game.photohome
cell.time_label.text = game.time
cell.stadium_label.text = game.stadium
cell.channel_label.text = game.channel
return cell
}
}
the crash is at line:
let homeTeam = JsonObject["homeTeam"] as! String
with the message:
fatal error: unexpectedly found nil while unwrapping an Optional value

Answer 1

you are missing the json format. the values your looking for are in array "Schedule"
so your code will be
if let JsonObject = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSMutableDictionary{
//this is your array of games
let items = JsonObject["Schedule"] as! NSMutableArray
print(items)
//loop in items and add the values to your array
for item in items {
let homeTeam = item["homeTeam"] as! String
let awayTeam = item["awayTeam"] as! String
let gameDate = item["gameDate"] as! String
let gameTimeET = item["gameTimeET"] as! String
let tvStation = item["tvStation"] as! String
let api_guest = awayTeam
let api_home = homeTeam
let api_tvhost = tvStation
let api_time = gameDate + ", " + gameTimeET + " ET" // convert gameDate to day e.g. SUN
let api_stadion = "N/A"
// prepare data for array
let gamedata = Games(participants: api_guest+" # "+api_home, photoguest: UIImage(named: api_guest), photohome: UIImage(named: api_home), time: api_time, stadium: api_stadion, channel: api_tvhost)!
self.gameplan.append(gamedata)
}
}