CODEWITHSUNDEEP
iosxcodeswift
user6484498
user6484498

Reputation:

Saving ImageView content in memory? What is the best approach?

I've been looking for this answer online all morning long and I didn't find exactly what I needed. I want the user to add an image from his library and it would appear on the screen. I've managed to write the code that allows me to do that. However, I want that image to be saved. By that, I mean that I want the image selected to still appear after the user closes the app and reopens it. How can I do that? Any help would be really appreciated :) I've attached my code:

import UIKit

class Schedule: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@IBOutlet var imageView: UIImageView!   
let imagePicker = UIImagePickerController()    
@IBAction func addImage(sender: AnyObject) {

    imagePicker.allowsEditing = false
    // Only allow photos to be picked, not taken.
    imagePicker.sourceType = .PhotoLibrary        
    presentViewController(imagePicker, animated: true, completion: nil)        
}


// User picks image

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.contentMode = .ScaleAspectFit
        imageView.image = pickedImage                
    }        
    dismissViewControllerAnimated(true, completion: nil)                
}

// User cancels picking image action

func imagePickerControllerDidCancel(picker: UIImagePickerController) {
    dismissViewControllerAnimated(true, completion: nil)
}

override func viewDidLoad() {
    super.viewDidLoad()        
    imagePicker.delegate = self        
}    
}

Upvotes: 0

Views: 30

Answers (1)

Nirav D
Nirav D

Reputation: 72410

You can do this using NSUserDefault, It will store your image data and you can retrieve it later. Change your viewDidLoad like this

override func viewDidLoad() {
super.viewDidLoad()        
     imagePicker.delegate = self 
     if let imageData = NSUserDefaults.standardUserDefaults().objectForKey("image") as? NSData {
         self.imageView.image = UIImage(data: imageData)
     }
}

Now you need to store this imageData in NSUserDefault when you select image from UIImagePicker

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
         imageView.contentMode = .ScaleAspectFit
         imageView.image = pickedImage
         let data = UIImagePNGRepresentation(pickedImage)              
         NSUserDefaults.standardUserDefaults().setObject(data, forKey: "image")
         NSUserDefaults.standardUserDefaults().synchronize() 
     }        
     dismissViewControllerAnimated(true, completion: nil)                
}

Hope this will help you.

Upvotes: 1

Related Questions