Adding Photos to Array and Displaying to UICollection View error - swift

Question

QUESTION
This code works to set an image to an array but comes up with the following error - 2017-12-06 12:31:21.264812+0000 SmartReceipts[880:172369] [discovery] errors encountered while discovering extensions: Error Domain=PlugInKit Code=13 "query cancelled" UserInfo={NSLocalizedDescription=query cancelled}
I need to know what this means and if there is a possible fix around it?
import UIKit
class GalleryController: UICollectionViewController,
UIImagePickerControllerDelegate,
UINavigationControllerDelegate {
var Receipts = [UIImage?]()
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView?.reloadData()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Register cell classes
//self.collectionView!.register(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
self.dismiss(animated: true, completion: nil)
print(info);
let newReceipts = info[UIImagePickerControllerEditedImage] as? UIImage
self.Receipts.append(newReceipts)
print("Array Contains \(self.Receipts.count) Receipts")
print(self.Receipts)
self.collectionView?.reloadData()
print("completedIfStatement")
}
#IBAction func getReceipts(_ sender: Any) {
print("PlusButtonPressed")
let optionMenu = UIAlertController(title: nil, message: "Choose Option", preferredStyle: .actionSheet)
// 2
let albumAction = UIAlertAction(title: "Album", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
print("PhotosOption")
self.getFromReceipts()
})
let cameraAction = UIAlertAction(title: "Camera", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
print("CameraOption")
self.getFromCamera()
})
//
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: {
(alert: UIAlertAction!) -> Void in
print("Cancel")
})
// 4
optionMenu.addAction(albumAction)
optionMenu.addAction(cameraAction)
optionMenu.addAction(cancelAction)
// 5
self.present(optionMenu, animated: true, completion: nil)
}
func getFromReceipts() {
print("GetFromReceipts")
let cameraPicker = UIImagePickerController()
cameraPicker.delegate = self
cameraPicker.sourceType = .photoLibrary
self.present(cameraPicker, animated: true, completion: nil )
}
func getFromCamera() {
print("GetFromCamera")
let cameraPicker = UIImagePickerController()
cameraPicker.delegate = self
cameraPicker.sourceType = .camera
self.present(cameraPicker, animated: true, completion: nil )
}
//Number of Views
override func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.Receipts.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtindexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: Receipts, for: indexPath as IndexPath) as? PhotoCell
cell?.imageView.image = self.Receipts[indexPath.row]
return cell!
}
}

Answer 1

The error maybe comes from not requesting the authorization to load an photo from the camera or the photo library. So you need to request for authorization before opening the camera like:
https://developer.apple.com/documentation/photos/phphotolibrary/1620736-requestauthorization

Answer 2

I guess you'r not requesting Photo/Camera authorizations.
You have to add the below keys to Info.plist.
Camera permission :
<key>NSCameraUsageDescription</key>
<string> ${PRODUCT_NAME} Camera Usage< </string>
For Photo Library, you will want this one to allow app user to browse the photo library.
<key>NSPhotoLibraryUsageDescription</key>
<string>${PRODUCT_NAME} Photo Usage</string>
And in you'r source code, to ask permission for the photo/camera you need to add this code (Swift 3):
PHPhotoLibrary.requestAuthorization({
(newStatus) in
if newStatus == PHAuthorizationStatus.authorized {
/* do stuff here */
}
})