Tag: view

I’m trying to get a picture from a specific user from Firebase in my collection view, I wrote everything perfectly without errors, but it’s not presenting on my collection view. The only thing i can think of is that Swift doesn’t know from which user to get the post.

Here is my code:

class PostViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {

@IBOutlet weak var collectionview: UICollectionView! var subposts = [SubPost]() var following = [String]()  override func viewDidLoad() {     super.viewDidLoad()      fetchPosts() }  @objc func fetchPosts() {     let ref = Database.database().reference()       ref.child("subposts").queryOrderedByKey().observe(.value, with: { (snap) in         if let postsSnap = snap.value as? [String : AnyObject] {              for (_,subpost) in postsSnap {                 if let userID = subpost["userID"] as? String {                     let posst = SubPost()                     if let pathToImage = subpost["pathToImage"] as? String, let postID = subpost["postID"] as? String {                         posst.pathToImage = pathToImage                         posst.postID = postID                         posst.userID = userID                         self.subposts.append(posst)                     }                     self.collectionview.reloadData()                 }             }         }     })     ref.removeAllObservers() }  func numberOfSections(in collectionView: UICollectionView) -> Int {     return 1 }  func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {     return self.subposts.count }  func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "subPostCell", for: indexPath) as! SubPostCell     cell.subPostImage.downloadImage(from: self.subposts[indexPath.row].pathToImage)     cell.postID = self.subposts[indexPath.row].postID      return cell } 

}