Profile image is not updating even after selecting a new image from gallery or camera - ios

Question

Hello everyone and thanks in advance to everyone who helps me :)
I want to let people choose a picture from the gallery (like a profile picture)
and the selected image will remain even after exiting the app ...
And when I go back into the app I want see picture I chose
How can I do this please?
USE-Swift 4
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
#IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
imageView.backgroundColor = UIColor.lightGray
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
let image = info[UIImagePickerControllerOriginalImage] as! UIImage
imageView.image = image
imageView.contentMode = .scaleAspectFill
dismiss(animated: true, completion: nil)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
let controller = UIImagePickerController()
controller.delegate = self
controller.sourceType = .photoLibrary
present(controller, animated: true, completion: nil)
}
}

Answer 1

You can use saveImage() method to save image in document directory when you pick any image. An call getImage() method to get image in viewDidLoad and set it on imageView.
func saveImage(_ image: UIImage) {
let url = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("Profile.jpg")
let imageData = UIImageJPEGRepresentation(image, 0.8)
try? imageData?.write(to: url!)
}
func getImage() -> UIImage? {
let url = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("Profile.jpg")
if let data = try? Data(contentsOf: url!) {
return UIImage(data: data)
}
return nil
}

Answer 2

Use user default and check user default value in ViewDidLoad method
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
#IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let possibleOldImagePath = UserDefaults.standard.object(forKey: "path") as! String?
if let oldImagePath = possibleOldImagePath {
let oldFullPath = self.documentsPathForFileName(oldImagePath)
let oldImageData = NSData(contentsOfFile: oldFullPath)
// here is your saved image:
imageView = UIImage(data: oldImageData)
}
imageView.backgroundColor = UIColor.lightGray
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
let image = info[UIImagePickerControllerOriginalImage] as! UIImage
imageView.image = image
imageView.contentMode = .scaleAspectFill
// save to userDefaults
let imageData = UIImageJPEGRepresentation(image, 1)
let relativePath = "image_\(NSDate.timeIntervalSinceReferenceDate).jpg"
let path = self.documentsPathForFileName(relativePath)
imageData.writeToFile(path, atomically: true)
UserDefaults.standard.set(relativePath, forKey: "path")
UserDefaults.standard.synchronize()
dismiss(animated: true, completion: nil)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
let controller = UIImagePickerController()
controller.delegate = self
controller.sourceType = .photoLibrary
present(controller, animated: true, completion: nil)
}
}
Method for path
func documentsPathForFileName(name: String) -> String {
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true);
let path = paths[0] as String;
let fullPath = path.stringByAppendingPathComponent(name)
return fullPath
}