Я использую представление коллекции для загрузки данных из API. Здесь я хочу расширить размер высоты представления коллекции вместо прокрутки в представлении коллекции. А также необходимо повторить фоновое изображение в соответствии с высотой представления коллекции. Вот макет android, и я хочу разработать аналогичный этому. Нажмите здесь
import UIKit import Nuke import SVProgressHUD import JSONJoy class HomeViewController: UIViewController {
@IBOutlet weak var categoryCollection: UICollectionView!
@IBOutlet weak var tabbar: UITabBar!
var sectors:[Sector] = []
var timer = Timer()
var counter = 0
var selectedSector = ""
var selectedSectorName = ""
var webService = ApiService()
let plist = PlistHelper()
override func viewDidLoad() {
super.viewDidLoad()
self.categoryCollection.dataSource = self
self.categoryCollection.delegate = self
for item in tabbar.items ?? []{
item.image = item.image?.withRenderingMode(.alwaysOriginal)
}
UITabBarItem.appearance().setTitleTextAttributes([NSAttributedString.Key.foregroundColor: UIColor.white], for: .normal)
UITabBarItem.appearance().setTitleTextAttributes([NSAttributedString.Key.foregroundColor: UIColor.black], for: .selected)
listSectors()
self.categoryCollection.backgroundColor = UIColor(patternImage: UIImage(named: "bg")!)
}
override func viewWillAppear(_ animated: Bool) {
listbanners()
}
override func viewWillDisappear(_ animated: Bool) {
self.timer.invalidate()
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if(segue.identifier == "sectors"){
let vc = segue.destination as! SectorsViewController
vc.sectorCode = selectedSector
vc.sectorName = selectedSectorName
}
}
func listSectors(){
webService.listSectors({ (sectors, message, status) in
if(status){
if let resData = sectors.arrayObject {
do{
for data in resData{
self.sectors.append(try Sector(JSONLoader(data)))
}
DispatchQueue.main.async {
self.categoryCollection.reloadData()
}
}
catch let error {
print("JSonJoyError:\(error)")
}
}
}
})
}
} расширение HomeViewController: UICollectionViewDelegate, UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if(collectionView == bannerCollection){
return banners.count
}
else {
return sectors.count
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let options = ImageLoadingOptions(placeholder: UIImage(named: "bannerPlaceholder"),transition: .fadeIn(duration: 0.33))
if(collectionView == bannerCollection){
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! DataCollectionViewCell
Nuke.loadImage(with: URL(string: banners[indexPath.row].ImageUrl ?? "")!, options: options, into:cell.img)
return cell
}
else{
let cell = categoryCollection.dequeueReusableCell(withReuseIdentifier: "catCell", for: indexPath) as! catogeryCollectionViewCell
Nuke.loadImage(with: URL(string: sectors[indexPath.row].ImageUrl ?? "")!, options: options, into:cell.photoImageView)
return cell
}
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if(collectionView == categoryCollection){
selectedSector = sectors[indexPath.row].Code ?? "FOOD"
selectedSectorName = sectors[indexPath.row].Name ?? "FOOD"
self.performSegue(withIdentifier: "sectors", sender: self)
}
}
}
расширение HomeViewController: UICollectionViewDelegateFlowLayout {
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
return UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
if(collectionView == bannerCollection){
let size = bannerCollection.frame.size
return CGSize(width: size.width, height: size.height - 10)
}
else{
let size = categoryCollection.frame.size
print("size\(size)")
return CGSize(width: (size.width / 2) - 8, height:120)
}
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return 30
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
return 0.0
}
}