Get a different numbers of images from collectionCell with use firebase - ios

Question

How can i get a different numbers of images from collectionCell into scrollView with use firebase?
In my project i have three viewController's.
FirstVC - collectionView inside a tableView. CollectionView need for display the main images for scroll their. TableView need for display the name and and to scroll the table. (i.e. for those images which are in FirstVC in collectionCell).
SecondVC - only collectionView. Need for display the albums.
ThirdVC - only scrollView inside viewController. ScrollView need for a scroll images which are located in the images folder in firebase.
So when i click on album in secondVC on collectionCell i would like to see in thirdVC in scrollView images which are located in folder images in firebase for scrolling their.
My firebase struct is here:
{
"users" : {
"Y7EHcJuqQWZrVI1HBmNgccbPhm55" : {
"name" : "Photos",
"posts" : {
"images" : {
"image" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13",
"image1" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13"
},
"qwerty" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13"
},
"posts2" : {
"images" : {
"image" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13",
"image1" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13"
},
"qwerty" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/city2.jpg?alt=media&token=64509e18-9884-4449-a081-c67393a7d82a"
},
"posts3" : {
"images" : {
"image" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13",
"image1" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13",
"image2" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/gallery%2F06BAB847-7C94-40A6-A9C8-C3A11B3F9C81.png?alt=media&token=4f797093-fbc7-437b-935c-d13be1409d13"
},
"qwerty" : "https://firebasestorage.googleapis.com/v0/b/test2-29e4b.appspot.com/o/oko1.jpg?alt=media&token=fedea2cb-93b1-496c-9392-0b95f4ada7b5"
}
}
}
}
And my project in googleDrive, because I was faced with the problem of loading the project on github. My project is very simple, but I can't solve the problem about which wrote above.
projectTestGoogleDrive
My project code:
FirstVC:
import UIKit
import Firebase
import SDWebImage
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var nameArray = [String]()
var addressArray = [String]()
var postImage = [String](), postImage2 = [String](), postImage3 = [String]()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
loadName()
loadImages()
tableView.allowsSelection = true
}
func loadName() {
FIRDatabase.database().reference().child("users").
observe(FIRDataEventType.childAdded, with: {(snapshot) in
let value = snapshot.value! as! NSDictionary
self.nameArray.append(value["name"] as? String ?? "")
})
}
func loadImages() {
FIRDatabase.database().reference().child("users").
observe(FIRDataEventType.childAdded, with: {(snapshot) in
let values = snapshot.value! as! NSDictionary
let posts = values["posts"] as? NSDictionary //[String: AnyObject]
let posts2 = values["posts2"] as? NSDictionary //[String: AnyObject]
let posts3 = values["posts3"] as? NSDictionary //[String: AnyObject]
self.postImage.append(posts?["qwerty"] as? String ?? "")
self.postImage2.append(posts2?["qwerty"] as? String ?? "")
self.postImage3.append(posts3?["qwerty"] as? String ?? "")
self.tableView.reloadData()
})
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue2" {
if let indexPaths = self.tableView.indexPathForSelectedRow {
let indexPath = indexPaths as NSIndexPath
let dvc = segue.destination as! CollectionViewController
let imagesArray = [self.postImage[indexPath.row],
self.postImage2[indexPath.row],
self.postImage3[indexPath.row]]
dvc.images = imagesArray.filter({ !($0.isEmpty) })
}
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return nameArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! TableViewCell
cell.userNameLabel.text = nameArray[indexPath.row]
let array = [postImage[indexPath.row],
postImage2[indexPath.row],
postImage3[indexPath.row]]
cell.postImageArray = array.filter({ !($0.isEmpty) })
return cell
}
}
SecondVC:
import UIKit
import SDWebImage
class CollectionViewController: UICollectionViewController {
var images = [String]()
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segue3" {
if let indexPaths = self.collectionView?.indexPathsForSelectedItems {
let indexPath = indexPaths[0] as NSIndexPath
let dvc = segue.destination as! ViewControllerScrollView
dvc.images = [images[indexPath.item]]
}
}
}
override func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return images.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CollectionViewCell2
cell.imageView.sd_setImage(with: URL(string: images[indexPath.item]))
return cell
}
}
ThirdVC:
import UIKit
class ViewControllerScrollView: UIViewController {
#IBOutlet weak var scrollView: UIScrollView!
var images = [String]()
override func viewDidLoad() {
super.viewDidLoad()
for i in 0..<images.count {
let imageView = UIImageView()
imageView.sd_setImage(with: URL(string: images[i]))
let xPosition = self.view.frame.width * CGFloat(i)
imageView.frame = CGRect(x: xPosition, y: 0, width: self.scrollView.frame.width, height: self.scrollView.frame.height)
scrollView.contentSize.width = scrollView.frame.width * CGFloat(i + 1)
scrollView.addSubview(imageView)
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}