[setup collectionView] #uicollectionview #swift3

setupCollectionView.swift

private func setupCollectionView() {
  collectionView.delegate = self
  collectionView.dataSource = self
  collectionView.register(UINib.init(nibName: "NIB_NAME", bundle: nil), forCellWithReuseIdentifier: "cell")
  setupCellSizing()
}
    
    
private func setupCellSizing() {
  let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
  layout.sectionInset = UIEdgeInsets(top: 10, left: 0, bottom: 10, right: 0)
  let height = UIScreen.main.bounds.height * 0.23
  layout.itemSize = CGSize(width: height, height: height)
  layout.scrollDirection = .horizontal
  layout.minimumLineSpacing = 1.0
  layout.minimumInteritemSpacing = 1.0
  collectionView.setCollectionViewLayout(layout, animated: true)
  collectionView.reloadData()
}