UICollection View cell content is not showing up - ios

Question

enter image description here import UIKit
import FirebaseAuth
class SideMenuController: UIViewController, UICollectionViewDelegate,UICollectionViewDataSource, UITableViewDataSource, UITableViewDelegate,UICollectionViewDelegateFlowLayout
{
var users = [User]()
var newmessage: NewMessageController?
struct userobject {
var username:String
var profilepicture:UIImage
}
var userArray: [userobject] = []
#IBOutlet weak var sidecollectionview: UICollectionView!
#IBOutlet weak var tableView: UITableView!
struct PreviewDetail {
let title: String
let preferredHeight: Double
}
let sampleData:[String] = [
"Trending Events","International Islamic University,Islamabad","Shaheed Zulfikar Ali Bhutto Institute of Science and Technology,Islamabad","Institute of Space Technology, Islamabad","Bahria University,Islamabad","Chat","CreateEvent","Signout"
]
let sampleData1:[String] = [
"Trending Events","International Islamic University,Islamabad","Shaheed Zulfikar Ali Bhutto Institute of Science and Technology,Islamabad","Institute of Space Technology, Islamabad","Bahria University Islamabad"
]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
sidecollectionview.delegate = self
sidecollectionview.dataSource = self
userArray.append(userobject(username: "Farasat Niazi",profilepicture: #imageLiteral(resourceName: "images-8") ))
tableView.dataSource = self
tableView.delegate = self
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
// Do any additional setup after loading the view.
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return userArray.count
}
override func viewWillAppear(_ animated: Bool) {
animateTable()
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize {
return CGSize(width: UIScreen.main.bounds.size.width, height: 10.0)
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
print("executing cell")
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "usercell" , for: indexPath)as! SideMenuCollectionViewCell
cell.username.text = userArray[indexPath.item].username
cell.imageview.image = userArray[indexPath.item].profilepicture
return cell
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// Return the number of items in the sample data structure.
var count:Int?
if tableView == self.tableView {
if Auth.auth().currentUser != nil {
count = sampleData.count
}
else {
count = sampleData1.count
}
}
return count!
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell:UITableViewCell?
if tableView == self.tableView {
cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath as IndexPath)
cell!.textLabel!.text = sampleData[indexPath.row]
}
return cell!
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("did select: \(indexPath.row) ")
}
func animateTable() {
tableView.reloadData()
let cells = tableView.visibleCells; let tableHeight: CGFloat = tableView.bounds.size.height
for i in cells {
let cell: UITableViewCell = i as UITableViewCell
cell.transform = CGAffineTransform(translationX: 0, y: tableHeight)
}
var index = 0
for a in cells {
let cell: UITableViewCell = a as UITableViewCell
UIView.animate(withDuration: 1.5, delay: 0.05 * Double(index), usingSpringWithDamping: 0.8, initialSpringVelocity: 0, options: UIViewAnimationOptions(rawValue: UInt(0)) , animations: {
cell.transform = CGAffineTransform(translationX: 0, y: 0);
}, completion: nil)
index += 1
}
}
import UIKit
class SideMenuCollectionViewCell: UICollectionViewCell {
#IBOutlet weak var signbutton: UIButton!
#IBOutlet weak var username: UILabel!
#IBOutlet weak var imageview: UIImageView!
}
import UIKit
class SideMenuLayoutCollectionView: UICollectionViewLayout {
}
hey guys my collection view only showing its background and not displaying cell contents.
Things i have checked:
Data source and delegate is assigned to Collection view.
Collection view cell identifier is "usercell"
collection view cell class is attached in identity inspector.

Answer 1

Implement size for item method
func collectionView(_ collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
sizeForItemAt indexPath: IndexPath) -> CGSize {
// your code here
}
in viewDidLoad
collectionView.registerClass(SideMenuCollectionViewCell.self, forCellWithReuseIdentifier: "usercell")

Answer 2

If you have configured the cell in a storyboard or an xib, then remove the following line,
collectionView.registerClass(SideMenuCollectionViewCell.self, forCellWithReuseIdentifier: "usercell")
It worked for me.