CollectionView not registering cells - ios

Question

I have a viewController with a collectionView inside of it. I'm pretty sure that I have configured everything right yet it is not rendering any cells. I have added the appropriate delegates and data sources and double checked to see if the data is loading and it is but cells are not being populated
import UIKit
import UIKit
import Alamofire
import AlamofireNetworkActivityIndicator
import SwiftLocation
import CoreLocation
import AMScrollingNavbar
class NewHomeFeedControllerViewController: UIViewController {
let detailView = EventDetailViewController()
var allEvents = [Event]()
let customCellIdentifier1 = "customCellIdentifier1"
var grideLayout = GridLayout(numberOfColumns: 2)
let refreshControl = UIRefreshControl()
var newHomeFeed: NewHomeFeedControllerViewController?
let paginationHelper = PaginationHelper<Event>(serviceMethod: PostService.showEvent)
lazy var dropDownLauncer : DropDownLauncher = {
let launcer = DropDownLauncher()
launcer.newHomeFeed = self
return launcer
}()
// 1 IGListKit uses IGListCollectionView, which is a subclass of UICollectionView, which patches some functionality and prevents others.
let collectionView: UICollectionView = {
// 2 This starts with a zero-sized rect since the view isn’t created yet. It uses the UICollectionViewFlowLayout just as the ClassicFeedViewController did.
let view = UICollectionView(frame: CGRect.zero, collectionViewLayout: UICollectionViewFlowLayout())
// 3 The background color is set to white
view.backgroundColor = UIColor.white
return view
}()
func handleDropDownMenu(){
dropDownLauncer.showDropDown()
}
func configureCollectionView() {
// add pull to refresh
refreshControl.addTarget(self, action: #selector(reloadHomeFeed), for: .valueChanged)
collectionView.addSubview(refreshControl)
}
func reloadHomeFeed() {
self.paginationHelper.reloadData(completion: { [unowned self] (events) in
self.allEvents = events
if self.refreshControl.isRefreshing {
self.refreshControl.endRefreshing()
}
DispatchQueue.main.async {
self.collectionView.reloadData()
}
})
}
func categoryFetch(dropDown: DropDown){
navigationItem.title = dropDown.name
paginationHelper.category = dropDown.name
configureCollectionView()
reloadHomeFeed()
}
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(collectionView)
collectionView.contentInset = UIEdgeInsetsMake(15, 0, 0, 0)
navigationItem.title = "Home"
collectionView.dataSource = self
collectionView.delegate = self
collectionView.collectionViewLayout = grideLayout
collectionView.reloadData()
collectionView.register(CustomCell.self, forCellWithReuseIdentifier: customCellIdentifier1)
// self.navigationItem.hidesBackButton = true
let backButton = UIBarButtonItem(image: UIImage(named: "menu"), style: .plain, target: self, action: #selector(handleDropDownMenu))
self.navigationItem.leftBarButtonItem = backButton
configureCollectionView()
reloadHomeFeed()
// Do any additional setup after loading the view.
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if let navigationController = self.navigationController as? ScrollingNavigationController {
navigationController.followScrollView(self.collectionView, delay: 50.0)
}
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
if let navigationController = navigationController as? ScrollingNavigationController {
navigationController.stopFollowingScrollView()
}
}
func scrollViewShouldScrollToTop(_ scrollView: UIScrollView) -> Bool {
if let navigationController = navigationController as? ScrollingNavigationController {
navigationController.showNavbar(animated: true)
}
return true
}
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
super.viewWillTransition(to: size, with: coordinator)
grideLayout.invalidateLayout()
}
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
}
extension NewHomeFeedControllerViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return allEvents.count
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let customCell = collectionView.dequeueReusableCell(withReuseIdentifier: customCellIdentifier1, for: indexPath) as! CustomCell
let imageURL = URL(string: allEvents[indexPath.item].currentEventImage)
print(imageURL ?? "")
customCell.sampleImage.af_setImage(withURL: imageURL!)
return customCell
}
}
extension NewHomeFeedControllerViewController: UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
if indexPath.item == 0 || indexPath.item == 1 {
return CGSize(width: view.frame.width, height: grideLayout.itemSize.height)
}else{
return grideLayout.itemSize
}
}
}
Any idea what could be going on?

Answer 1

Sorry you guys forgot to add this
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
collectionView.frame = view.bounds
}
Haha thanks for the help