Comment puis-je enregistrer et afficher une Image avec la base de données de swift 3

Larme a presque parfait, mais au lieu de cela:

if let image = UIImage(data:imageData) as? UIImage

ce faire:

if let image = UIImage(data: imageData as Data)

OriginalL'auteur Rolf Cosmo Anthony

Espère que cela va vous aider. D'abord j'ai aussi eu une grande confusion de stockage de l'image dans la base de Données.

Ce est utilisé pour enregistrer l'image dans coreData

D'abord créer Nsmanaged Classe d'Objet

class Item: NSManagedObject {


}

Declare the image as NSData

import CoreData

extension Item {

    @NSManaged var image: NSData?
    @NSManaged var name: String?
    @NSManaged var email: String?

}

Maintenant aller à la Vue du Contrôleur que vous souhaitez enregistrer l'image .

class newViewController: UIViewController ,UIImagePickerControllerDelegate,UINavigationControllerDelegate{
var item : Item? = nil
var imagePicker = UIImagePickerController()
var PassImages = UIImage()
@IBOutlet var name: UITextField!
@IBOutlet var email: UITextField!
@IBOutlet var photoclick: UIButton!
var context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
@IBAction func clickaction(_ sender: Any) {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary){
print("Button capture")
let picker = UIImagePickerController()
picker.allowsEditing = true
picker.sourceType = .photoLibrary
picker.delegate = self  //Don't forget this line!
            self.present(picker, animated: true, completion: nil)
}
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
var selectedImage: UIImage?
if let editedImage = info[.editedImage] as? UIImage {
selectedImage = editedImage
self.image.image = selectedImage!
picker.dismiss(animated: true, completion: nil)
} else if let originalImage = info[.originalImage] as? UIImage {
selectedImage = originalImage
self.image.image = selectedImage!
picker.dismiss(animated: true, completion: nil)
}
}
func imagePickerControllerDidCancel(picker: UIImagePickerController!) {
self.dismiss(animated: true, completion: nil)
}
@IBOutlet var image: UIImageView!=nil
@IBAction func submit(_ sender: Any) {
if name.text != "" && email.text != ""
{
let entityDescription = NSEntityDescription.entity(forEntityName: "Table", in: context)
let item = Item(entity: entityDescription!, insertInto: context)
item.name = name.text
item.email = email.text
item.image = image.image!.pngData()! as NSData
do {
try context.save()
print("saved this moc")
} catch {
return
}
let UserDetailsVc = self.storyboard?.instantiateViewController(withIdentifier: "ViewController") as! ViewController
self.navigationController?.pushViewController(UserDetailsVc, animated: true)
}
else
{
print("mail check")
let alertController1 = UIAlertController (title: "Fill Email id", message: "Enter valid email", preferredStyle: UIAlertController.Style.alert)
alertController1.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
present(alertController1, animated: true, completion: nil)
}
}
override func viewDidLoad() {
super.viewDidLoad()
if item != nil {
name.text = item?.name
email.text = item?.email
image.image = UIImage(data: (item?.image)! as Data)
}
}

Ce contrôleur est utilisé pour extraire tout

class ViewController: UIViewController ,UITableViewDataSource,UITableViewDelegate,NSFetchedResultsControllerDelegate{
var userarray: [Table] = []
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return userarray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableViewCell", for: indexPath) as! TableViewCell
let name = userarray[indexPath.row]
cell.username.text = name.name
cell.showImage?.image = UIImage(data: (name.image)!)
return cell
}
@IBOutlet var table: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
fetchData()
}
override func viewWillAppear(_ animated: Bool) {
fetchData()
}
func fetchData(){
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
do {
userarray = try context.fetch(Table.fetchRequest())
print(userarray,"user")
}catch{
print("error")
}
}
}

OriginalL'auteur Bhuvaneswari Lakshminarayanan