I am using swift. I'm trying to create a collectionView segue to lead to a new viewController.
I have a series of (lets say 8) different images and labels as an array within the collectionView, and the when selected, I want the user to be sent to another view controller (with 8 different possibilities - one for each cell). I have been able to get the app to build, but the behaviour from selecting a cell is wrong.
The first cell that is selected has no response, then the next cell initiates a segue - but to the previously selected one! Each time a different cell is selected, it segues to the previous selected cell. Can anyone help me correct this error?
I have used performSegue and pushViewController separately, following different tutorials on youtube, but each resolves to the same issue.
The various view controllers to segue to have been allocated their own storyboardID in the main.storyboard file. The initial view controller is embedded within a navigation controller, and each new veiwcontroller (to segue to) has been connected to the collection view of the main view controller.
import UIKit
class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet var CollectionView: UICollectionView!
// created an array for labels
let NamesForSectionTitles = ["Overview","Canopy trees","Mid-story trees","Understory plants","Birds","Mammals","Ferns","Butterflys"]
// created list of images to be loaded in the collectionview
let sectionIconImages: [UIImage] = [
UIImage(named: "IMG_8750_landscape_night")!,
UIImage(named: "IMG_8789_Trees")!,
UIImage(named: "IMG_2185_Tree_Olearia")!,
UIImage(named: "_MG_9528_Herb_Flower")!,
UIImage(named: "IMG_3654-")!,
UIImage(named: "IMG_9892-2")!,
UIImage(named: "IMG_9496_Ferns_crozier")!,
UIImage(named: "IMG_7707_Butterfly")!,
]
override func viewDidLoad() {
super.viewDidLoad()
// load the data sources and delegate
CollectionView.dataSource = self
CollectionView.delegate = self
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return NamesForSectionTitles.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) ->
UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! CollectionViewCell
cell.SectionTitle.text = NamesForSectionTitles[indexPath.row]
cell.sectionImages.image = sectionIconImages[indexPath.row]
return cell
}
// tells the collection view that upon selecting a cell, show the next UIView controller, as suggested in storyboard name (main.storyboard property) - tutoral from https://www.youtube.com/watch?v=pwZCksvXGRw&list=PLPUDRZDcNNsMdyfZVw4CJDT1Wu8cYx_6E&index=7&t=0s
func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath) {
performSegue(withIdentifier: NamesForSectionTitles[indexPath.row], sender: self)
}
}
The viewer should see an image view with a label, that when selected takes them to a new collection view.
