希望这能帮助你-:
import Foundation
class HomeController: UIViewController{
// STORED VARIABLE FOR CollectionView
lazy var CollectionView : UICollectionView = {
var layout = UICollectionViewFlowLayout()
layout.minimumLineSpacing = 0
var collectionViews = UICollectionView(frame: .zero, collectionViewLayout: layout)
collectionViews.translatesAutoresizingMaskIntoConstraints = false
collectionViews.backgroundColor = UIColor.white
collectionViews.showsHorizontalScrollIndicator = false
collectionViews.showsVerticalScrollIndicator = false
collectionViews.dataSource = self
collectionViews.delegate = self
return collectionViews
}()
// APPLY CONSTRAINTS FOR CollectionView
func setUpCollectionView(){
view.addSubview(CollectionView)
CollectionView.register(HomeControllerCell.self, forCellWithReuseIdentifier: "cell")
CollectionView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
CollectionView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
CollectionView.topAnchor.constraint(equalTo: view.topAnchor,constant:92).isActive = true
CollectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor,constant:-50).isActive = true
}
override func viewDidLoad() {
super.viewDidLoad()
setUpCollectionView()
}
}
// EXTENSION FOR COLLECTION VIEW PARENT
extension HomeController:UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout{
// NUMBER OF SECTION IN TABLE
public func numberOfSections(in collectionView: UICollectionView) -> Int{
return 1
}
// NUMBER OF ROWS IN PARENT SECTION
public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int{
return 5
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell{
let Cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! HomeControllerCell
// PASS IMAGE (whatever you have) TO COMPUTED VARIABLE image
Cell.image = pass image here
return Cell
}
// SIZE FOR PARENT CELL COLLECTION VIEW
public func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize{
return CGSize(width: view.frame.width, height: 220)
}
}
CollectionViewCellClass-:
class HomeControllerCell: UICollectionViewCell {
//INITIALIZER
override init(frame: CGRect) {
super.init(frame: frame)
setUpview()
}
// STORED VARIABLE imageVIEW
let imageView:UIImageView = {
let iv = UIImageView()
iv.backgroundColor = .red
iv.contentMode = .scaleAspectFill
iv.translatesAutoresizingMaskIntoConstraints = false
iv.clipsToBounds = true
return iv
}()
// COMPUTED VARIABLE image
var image: UIImage? {
didSet {
self.imageView.image = image
}
}
// APPLY CONSTRAINTS FOR CELL VIEWS
func setUpview(){
// ADD imageView AS SUBVIEW
addSubview(imageView)
// APPLY CONSTRAINT ON IMAGE VIEW
imageView.leftAnchor.constraint(equalTo: self.leftAnchor,constant:5).isActive = true
//menuHeader.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
imageView.topAnchor.constraint(equalTo: self.topAnchor,constant:12).isActive = true
imageView.heightAnchor.constraint(equalToConstant: 50).isActive = true
imageView.widthAnchor.constraint(equalToConstant: 50).isActive = true
}
// REQUIRED INIT
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
