show camera roll in a collectionView - swift3

Question

I know that this question has answered in this site But I tried the code and receive an Error please help me to show my camera roll in a collection view (I know that I have to add photo usage in info.plist please Just focus on my codes thanks!!!)
here is my view controller code
class translateViewController: UIViewController , UINavigationControllerDelegate , UIImagePickerControllerDelegate , UICollectionViewDataSource, UICollectionViewDelegate {
#IBOutlet var myimageView: UIImageView!
#IBAction func importImage(_ sender: Any) {
let image = UIImagePickerController()
image.delegate = self
image.sourceType = UIImagePickerControllerSourceType.photoLibrary
image.allowsEditing = false
self.present(image , animated: true)
{
}
}
#IBOutlet weak var cameraRollCollectionView: UICollectionView!
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerOriginalImage] as? UIImage{
myimageView.image = image
}
else {
print("Error")
}
self.dismiss(animated: true, completion: nil)
}
#IBOutlet var translatebackgroundimg: UIImageView!
#IBOutlet var translatefrontimg: UIImageView!
var assetCollection: PHAssetCollection!
var photosAsset: PHFetchResult<AnyObject>!
var assetThumbnailSize: CGSize!
override func viewDidLoad() {
super.viewDidLoad()
let fetchOptions = PHFetchOptions()
let collection:PHFetchResult = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: fetchOptions)
if let first_Obj:AnyObject = collection.firstObject{
//found the album
self.assetCollection = first_Obj as! PHAssetCollection
}
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.light)
let blurView = UIVisualEffectView(effect: blurEffect)
blurView.frame = CGRect(x: self.translatebackgroundimg.frame.origin.x, y: self.translatebackgroundimg.frame.origin.y, width: self.translatebackgroundimg.frame.size.width, height: self.translatebackgroundimg.frame.size.height)
blurView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
self.translatebackgroundimg.addSubview(blurView)
// Do any additional setup after loading the view.
translatefrontimg.image = UIImage(named: "Translate.png")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidAppear(_ animated: Bool) {
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.dark)
let blurView = UIVisualEffectView(effect: blurEffect)
blurView.frame = translatebackgroundimg.bounds
translatebackgroundimg.addSubview(blurView)
translatebackgroundimg.frame = self.view.bounds
}
override func viewWillAppear(_ animated: Bool) {
// Get size of the collectionView cell for thumbnail image
if let layout = self.cameraRollCollectionView!.collectionViewLayout as? UICollectionViewFlowLayout{
let cellSize = layout.itemSize
self.assetThumbnailSize = CGSize(width: cellSize.width, height: cellSize.height)
}
//fetch the photos from collection
self.photosAsset = (PHAsset.fetchAssets(in: self.assetCollection, options: nil) as AnyObject!) as! PHFetchResult<AnyObject>!
self.cameraRollCollectionView!.reloadData()
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of items
var count: Int = 0
if(self.photosAsset != nil){
count = self.photosAsset.count
}
return count;
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cameraCell", for: indexPath as IndexPath)
//Modify the cell
let asset: PHAsset = self.photosAsset[indexPath.item] as! PHAsset
PHImageManager.default().requestImage(for: asset, targetSize: self.assetThumbnailSize, contentMode: .aspectFill, options: nil, resultHandler: {(result, info)in
if result != nil {
cameraCell.userImage.image = result
}
})
return cell
}
// MARK: - UICollectionViewDelegateFlowLayout methods
func collectionView(collectinView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAtIndex section: Int) -> CGFloat {
return 4
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAtIndex section: Int) -> CGFloat {
return 1
}
// UIImagePickerControllerDelegate Methods
func imagePickerControllerDidCancel(_ picker: UIImagePickerController){
picker.dismiss(animated: true, completion: nil)
}
and here is my CollectionViewCell codes
class cameraCell: UICollectionViewCell , UIImagePickerControllerDelegate {
#IBOutlet weak var userImage: UIImageView!
func configurecell(image: UIImage){
userImage.image = image
}
}