NSFileManager fails to save - No such file or directory - swift

Question

I'm using 'AlamoFireImage' to download my image files.
And after that, I use NSFileManager and CreateFile method to save them in a directory.
But when I try to retrieve the saved images, It only returns the first File. While It should have saved 15 images.
Here's my function for saving Image Files :
func getImage(url: String) {
Alamofire.request("https://www.tandori.ir/uploads/categories/" + url).responseImage { (response) in
if response.result.value != nil {
do {
let fileManager = FileManager.default
let paths = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent(url)
let image = UIImage(named: url)
let imageData = image?.jpegData(compressionQuality: 0.2)
fileManager.createFile(atPath: paths as String, contents: imageData, attributes: nil)
print(paths)
}
catch let error as NSError {
print(error)
}
}
}
}
And this is my function for downloading them :
func launchApp() {
let imgTitiles = UserDefaults.standard.array(forKey: "imgsArray")!
for pic in imgTitiles {
self.getImage(url: pic as! String)
print("done")
}
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let resultViewController = storyBoard.instantiateViewController(withIdentifier: "mainTab") as! TandoriTabView
self.present(resultViewController, animated: true)
}
When I try to retrieve the saved images, I get this error on Console :
"BOMStream BOMStreamWithFileAndSys(int, off_t, size_t, int, char *, BomSys *): read: No such file or directory"
I'm trying to Show these images in a collection view.
Here's my code in my ViewController :
//Get Images Directory Path Function.
func getDirectoryPath() -> String {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDirectory = paths[0]
return documentsDirectory
}
//Get Images Function.
func getImage(name : String) -> String {
_ = FileManager.default
let imagePAth = (self.getDirectoryPath() as NSString).appendingPathComponent(name)
return imagePAth
}
//Show Images in collectionView cells function.
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = categoriesCollection.dequeueReusableCell(withReuseIdentifier: "categories", for: indexPath) as! categoriesCell
let imageAddress = getImage(name: imgTitiles[indexPath.row] as! String) //TheRealShit
cell.categoryImage.image = UIImage(contentsOfFile: imageAddress)
return cell
}
What seems to be the Problem?
Thanks in advance!

Answer 1

Actually your using Alamofire downloading images are in asynchronously. Due to this you are only few images when you are showing viewcontroller. Modify your code to getImage() synchronously in below code. I hope it will work for you.
func getImage(url: String) {
if let image = UIImage(named: url) {
let fileManager = FileManager.default
let paths = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent(url)
let imageData = image?.jpegData(compressionQuality: 0.2)
fileManager.createFile(atPath: paths as String, contents: imageData, attributes: nil)
print(paths)
}
}