I have two arrays, I call a separate VC and change the General array to Motivation by clicking the button. When I return to the VC on which UIViewCollection, the displayed array element remains equal to the index of the previous one. How do I start displaying the array from scratch?
VC UIcollectionView
class MainViewController: UIViewController, UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout {
@IBOutlet weak var collectionView: UICollectionView!
var generalQuote = [
Text(text: "general0", name: "quote0"),
Text(text: "general1", name: "quote1"),
Text(text: "general2", name: "quote2"),
Text(text: "general3", name: "quote3"),
Text(text: "general4", name: "quote4"),
]
var motivationQuoute = [
Text(text: "motivation0", name: "quote0"),
Text(text: "motivation1", name: "quote1"),
]
var arrayQuote = [Text]()
enum Theme {
case general, motivation
}
var currentTheme: Theme = .general
var quoutesInTheme = 0
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView.register(UINib(nibName: "ProductCell", bundle: nil),forCellWithReuseIdentifier: "ProductCell")
self.collectionView.dataSource = self
self.collectionView.delegate = self
}
override func viewWillAppear(_ animated: Bool) {
checkCurrentTheme()
print("Updated")
}
func checkCurrentTheme() {
switch currentTheme {
case .general:
print("Current theme General")
quoutesInTheme = generalQuote.count
arrayQuote = generalQuote
case .motivation:
print("Current theme Motivation")
arrayQuote = motivationQuoute
quoutesInTheme = motivationQuoute.count
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
quoutesInTheme = arrayQuote.count
return quoutesInTheme
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ProductCell", for: indexPath) as! ProductCell
let quotes: Text
quotes = arrayQuote[indexPath.item]
cell.setupCell(text: quotes)
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
{
let guide = view.safeAreaLayoutGuide
let width = guide.layoutFrame.size.width
let height = guide.layoutFrame.size.height
return CGSize(width: width, height: height)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return 5
}
}
VC with Buttons
class choiceThemeQuoteViewController: UIViewController {
@IBOutlet weak var general: UIButton!
@IBOutlet weak var motivation: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func generalButton(_ sender: Any) {
if let presenter = presentingViewController as? MainViewController {
presenter.currentTheme = .general
presenter.collectionView.reloadData()
}
dismiss(animated: true, completion: nil)
}
@IBAction func motivationButton(_ sender: Any) {
if let presenter = presentingViewController as? MainViewController {
presenter.currentTheme = .motivation
presenter.collectionView.reloadData()
}
dismiss(animated: true, completion: nil)
}
}
