How do I fetch images from photo library? - swift3

Question

Hi I had switch from swift 2 to swift 3.
Here is my uploadVC
class PhotoUploadVC: UICollectionViewController {
fileprivate var assets: PHFetchResult<AnyObject>?
fileprivate var sideSize: CGFloat!
//It is snippet of viewDidLoad()
override func viewDidLoad() {
super.viewDidLoad()
//Navigation Config
self.navigationItem.title = "CAMERA ROLL"
if PHPhotoLibrary.authorizationStatus() == .authorized {
reloadAssets()
} else {
PHPhotoLibrary.requestAuthorization({ (status: PHAuthorizationStatus) -> Void in
if status == .authorized {
self.reloadAssets()
} else {
self.showNeedAccessMessage()
}
})
}
}
//Here is function about fetch images
fileprivate func showNeedAccessMessage() {
let alert = UIAlertController(title: "Image picker", message: "App need get access to photos", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { (action: UIAlertAction) -> Void in
self.dismiss(animated: true, completion: nil)
}))
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { (action: UIAlertAction) -> Void in
UIApplication.shared.openURL(URL(string: UIApplicationOpenSettingsURLString)!)
}))
self.show(alert, sender: nil)
}
fileprivate func reloadAssets() {
// activityIndicator.startAnimating()
assets = nil
collectionView?.reloadData()
let fetchOptions = PHFetchOptions()
fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
assets = PHAsset.fetchAssets(with: PHAssetMediaType.image, options: fetchOptions)
collectionView?.reloadData()
// activityIndicator.stopAnimating()
}
I got an error message above.
Where is problem?
I think "fileprivate var assets: PHFetchResult?"
Anyone helping me?

Answer 1

Try changing:
fileprivate var assets: PHFetchResult<AnyObject>?
into
var assets: [AnyObject]!