collectionView's didSelectItemAtIndexPath not working [Swift] - swift

Question

I've been having this problem recently, and I couldn't seem to find a fix on any other similar questions. I have a collectionView which just display's colours (see below image) and I would like to store the cell's background colour in a variable to pass through an unwind segue, in order to set a background colour of another element. However, I can't seem to get this function to work as it has on previous projects and versions of this application and I was wondering if anyone knows what the problem might be ?
After pressing the 'add' button at the bottom, it unwinds and appends a new item to another collectionView, seen here:
I am able to get the name that the user has put in, however I have to use a default colour as I can't seem to get the didSelectItemAtIndexPath function to work.
Here's my code for the addViewController (first image)
import UIKit
import ChameleonFramework
class mondayViewController: UIViewController {
// collectionView
#IBOutlet var dayView: UICollectionView!
// data to display
var data = Day.mondayData()
// data from segues
var receivedName: String?
var receivedColour: UIColor?
override func viewDidLoad() {
super.viewDidLoad()
// set title
self.navigationController!.navigationBar.topItem!.title = "Monday"
// set datasource for collectionView
// datasource is self as the collectionViewDataSource methods are in the extension class below
dayView.dataSource = self
// make the navigationBar flat to flow onto the options tab
self.navigationController?.hidesNavigationBarHairline = true
}
#IBAction func unwindToMonday(segue: UIStoryboardSegue) {
if segue.identifier == "mondayUnwind" {
let subjectAdd = segue.sourceViewController as! mondayAddSubjectView
receivedName = subjectAdd.nameField.text
appendStuff()
}
}
func appendStuff() {
data.append(Day(name: receivedName, color: UIColor.flatRedColor()))
dayView.reloadData()
}
override func preferredStatusBarStyle() -> UIStatusBarStyle {
return UIStatusBarStyle.LightContent
}
// data.append(Day(name: receivedName, color: receivedColour))
// dayView.reloadData()
// currently used for testing
#IBAction func mondayAddButton(sender: AnyObject) {}
}
// mandatory functions for UICollectionView to work
// this includes assigning the number of sections, how manycells are meant to be in the section(s) and what cell to use (mondayCell in this case)
extension mondayViewController: UICollectionViewDataSource {
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return data.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! mondayCell
cell.data = self.data[indexPath.item]
return cell
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
let cell = collectionView.cellForItemAtIndexPath(indexPath)
}
// custom style the size of the collectionView. Changes the width to fill the screen and the height to 70
func collectionView(collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
let kWhateverHeightYouWant = 80
return CGSizeMake(collectionView.bounds.size.width, CGFloat(kWhateverHeightYouWant))
}
}
if anyone could let me know if I am doing something wrong, or if there is a solution to this issue, that would be awesome.
Cheers,
Rowan
UPDATE:
I have added the collectionViewDataSource and Delegate Methods to the main class (code below):
import UIKit
import ChameleonFramework
class mondayAddSubjectView: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
var pageView: PageViewController = PageViewController()
#IBOutlet var selectColourLabel: UILabel!
// would be a public variable, however it is an internal class
internal var cellColour: UIColor!
// collectionView
#IBOutlet var colourPicker: UICollectionView!
// textfield for the user to input their subject name
#IBOutlet var nameField: UITextField!
// source of colours to use in the colour collectionView
private var data = collectionViewColors.createColor()
override func viewDidLoad() {
super.viewDidLoad()
self.colourPicker.delegate = self
colourPicker.dataSource = self
// gesture recognizer to determine when the user has tapped anywhere but the text field, which cancells the keyboard
let tap: UIGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(mondayAddSubjectView.dismissKeyboard))
view.addGestureRecognizer(tap)
}
// dismiss keyboard when the user taps away from the text field (called above with #selector)
func dismissKeyboard() {
view.endEditing(true)
}
// MARK: - CollectionView Delegate and Data source methods
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
let cell = collectionView.cellForItemAtIndexPath(indexPath)
print("it works")
}
// choose how many sections are in the collectionView. as no content break is required, this will be 1
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return 1
}
// choose how many items are in each section. as there is only 1 section, it will be the number of stored items
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return data.count
}
// set re-use identifier and the data that will go in each cell
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! colourCell
cell.data = self.data[indexPath.item]
return cell
}
}