Why is my tableViewController not loading any data? - ios

Question

Im creating an app where different buttons in a ViewController load different menu's into the tableViewController. The buttons are linked by a prepare for segue and the menu's (arrays) are linked by a contentMode. 1: breakfast menu & 2: lunch menu. I had allot of help from someone setting this up but now the table is not loading any data... The cell has 3 labels which display an item, info and price. It changes value within the code when a contentMode is selected. Does anyone see the problem in my code? thanks a lot!
import UIKit
class foodMenuController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let foodMenuController = segue.destinationViewController as! foodTableViewController
if segue.identifier == "showBreakfast" {
foodMenuController.contentMode = 1
} else if segue.identifier == "showLunch" {
foodMenuController.contentMode = 2
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
import UIKit
class foodTableViewCell: UITableViewCell {
#IBOutlet weak var foodItem: UILabel!
#IBOutlet weak var foodDescription: UILabel!
#IBOutlet weak var foodPrice: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
import UIKit
class foodTableViewController: UITableViewController {
//Content Mode Selection in menu
var contentMode = 0
// THIS SHOULD BE LOADED WHEN CONTENT MODE is "1" --> BREAKFAST
let breakfastItems = ["Bread", "Coffee", "Nada"]
let breakfastInfo = ["Good", "Nice", "Nothing"]
let breakfastPrice = ["$1", "$100", "$12,40"]
// THIS SHOULD BE LOADED WHEN CONTENT MODE IS "2" --> LUNCH
let lunchItems = ["Not bread", "Not Coffee", "Something"]
let lunchInfo = ["Not good", "Not nice", "Yes"]
let lunchPrice = ["$1", "$100", "$12,40"]
var foodItems: [String] = []
var foodInfo: [String] = []
var foodPrice: [String] = []
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(true)
switch (contentMode){
case 1: contentMode = 1
foodItems = breakfastItems
foodInfo = breakfastInfo
foodPrice = breakfastPrice
case 2: contentMode = 2
foodItems = lunchItems
foodInfo = lunchInfo
foodPrice = lunchPrice
default:
break
}
tableView.reloadData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section:
Int) -> Int {
return foodItems.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "Cell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! foodTableViewCell
cell.foodItem.text = foodItems[indexPath.row]
cell.foodDescription.text = foodInfo[indexPath.row]
cell.foodPrice.text = foodPrice[indexPath.row]
return cell
}
}

Answer 1

There isn't anything apparently wrong with the snippet you shared. You can check what is returned in the tableView:numberOfRowsInSection: method and see if it is returning a value > 0
Also, this is a given but we've all done it at some point of time - check to make sure the tableview delegate and datasource are set to your viewcontroller.

Answer 2

I have made slight modifications in your project.
1. make the UINavigationController the InitialViewController
2. make the FoodMenuController the root of UINavigationController
Now modify your FoodMenuController
#IBOutlet weak var bakeryButton: UIButton!
#IBOutlet weak var breakfastButton: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBarHidden = true //hide navigationBar in first ViewController
self.bakeryButton.addTarget(self, action: "bakeryButtonAction:", forControlEvents: .TouchUpInside)
self.breakfastButton.addTarget(self, action: "breakfastButtonAction:", forControlEvents: .TouchUpInside)
}
func bakeryButtonAction(sender: UIButton) {
performSegueWithIdentifier("showLunch", sender: self)
}
func breakfastButtonAction(sender: UIButton) {
performSegueWithIdentifier("showBreakfast", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let foodTableViewController: FoodTableViewController = segue.destinationViewController as! FoodTableViewController
if segue.identifier == "showBreakfast" {
foodTableViewController.contentMode = 1
} else if segue.identifier == "showLunch" {
foodTableViewController.contentMode = 2
}
}
Also you can make UINavigationBar visible in FoodTableViewController
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBarHidden = false
}
PS: It is always better not to add segue directly to a UIButton. Alternatively you can add it from the yellow button on top of your FoodMenuController and specify the segue to be fired in UIButtonAction using performSegueWithIdentifier

Answer 3

I can no where see you setting the datasource and delegate of the tableView, please cross check these are both setup.