Argthtjtr

Basically, I have a UICollectionView within a UIView (that extends the collection view data and delegate protocols). Certain UICollectionView functions, such as numberofSections and numberOfItemsInSection are being called, while others such as cellForRowAt are not being called.

The collection view in question is rolesCollectionView, and its data is the roles array. I have added some print statements to see which functions are being called, and only the aforementioned ones are. I'm also certain that this isn't an issue with the RolesCollectionViewCell, whose code I can also provide if necessary.

class ProjectSearchViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {



var rolesCollectionView: UICollectionView!

var roles = ["Developer", "Designer", "Backend Developer", "Frontend Developer"]



override func viewDidLoad() {

    super.viewDidLoad()

    print("test")

    // Do any additional setup after loading the view.

    navigationItem.title = "Search Projects"



    view.backgroundColor = .white



    var rolesLayout = UICollectionViewFlowLayout()

    rolesLayout.scrollDirection = .horizontal

    rolesLayout.minimumLineSpacing = 8

    rolesLayout.minimumInteritemSpacing = 8

    rolesLayout.sectionInset = UIEdgeInsets(top: 0, left: 8, bottom: 0, right: 8)

    rolesLayout.estimatedItemSize = CGSize(width: 50, height: 25)



    rolesCollectionView = UICollectionView(frame: .zero, collectionViewLayout: rolesLayout)

    rolesCollectionView.backgroundColor = .white

    rolesCollectionView.delegate = self

    rolesCollectionView.dataSource = self

    rolesCollectionView.register(RolesCollectionViewCell.self, forCellWithReuseIdentifier: "role")

    rolesCollectionView.translatesAutoresizingMaskIntoConstraints = false

    view.addSubview(rolesCollectionView)

    rolesCollectionView.reloadData()



    let newView = UIView()

    newView.backgroundColor = .black

    newView.translatesAutoresizingMaskIntoConstraints = false

    view.addSubview(newView)

    NSLayoutConstraint.activate([

        newView.widthAnchor.constraint(equalToConstant: 50),

        newView.heightAnchor.constraint(equalToConstant: 50),

        newView.centerXAnchor.constraint(equalTo: view.centerXAnchor),

        newView.centerYAnchor.constraint(equalTo: view.centerYAnchor)

        ])



    setupConstraints()



}



func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

   // if collectionView == self.rolesCollectionView {

    print("return")

    print(roles.count)

    return roles.count

   // } else {

      //  return 0

  //  }

}



func numberOfSections(in collectionView: UICollectionView) -> Int {

    print("section")

    return 1

}



func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

    print("cell for item at")

    if collectionView == self.rolesCollectionView {

        var cell = rolesCollectionView.dequeueReusableCell(withReuseIdentifier: "role", for: indexPath) as! RolesCollectionViewCell

        cell.configure(roleName: roles[indexPath.row])

        print(roles[indexPath.row])

        return cell

    } else {

        return UICollectionViewCell()

    }

}



func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {

    //if collectionView == self.rolesCollectionView {

    print("size")

    print("test: (collectionView == rolesCollectionView)")

    return CGSize(width: 15.0, height: 15.0)

  //  }

}



func setupConstraints() {

    NSLayoutConstraint.activate([

        rolesCollectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 8),

        rolesCollectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -8),

        rolesCollectionView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 8)

        //rolesCollectionView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bot)

    ])

}

}