How to Delete an Image from Photolibrary After I Pick It Up Using Uiimagepickercontroller

How to delete an image from PhotoLibrary after i pick it up using UIImagePickerController

Just to add to the above,
For swift 3.0 this worked for me.

PHPhotoLibrary.shared().performChanges({
                let imageAssetToDelete = PHAsset.fetchAssets(withALAssetURLs: imageUrls as! [URL], options: nil)
                PHAssetChangeRequest.deleteAssets(imageAssetToDelete)
            }, completionHandler: {success, error in
                print(success ? "Success" : error )
            })

How to delete an image from photo library using UIImagePickerController

NSURL *url = [dict objectForKey:@"UIImagePickerControllerReferenceURL"] ;  

PHPhotoLibrary *library = [PHPhotoLibrary sharedPhotoLibrary];
 [library performChanges:^{
// Here assetsURLs is array of url's you want to delete 
    PHFetchResult *assetsToBeDeleted = [PHAsset fetchAssetsWithALAssetURLs:[NSArray arrayWithObject:url] options:nil];
    [PHAssetChangeRequest deleteAssets:assetsToBeDeleted];
} completionHandler:^(BOOL success, NSError *error)
 {
     // Check error and success here
}];

Delete a photo from the user's photo library?

Yes we can delete a photo. We can use PHAssetChangeRequest for this operation.

From Apple:

A request to create, delete, change metadata for, or edit the content of a Photos asset, for use in a photo library change block.

class func deleteAssets(_ assets: NSFastEnumeration)

where assets:
An array of PHAsset objects to be deleted.

PHAssetChangeRequest.deleteAssets([assetToDelete])

So, you could use the above code to delete assets.

below is swift 3 code,

PHPhotoLibrary.shared().performChanges({
            let imageAssetToDelete = PHAsset.fetchAssets(withALAssetURLs: imageUrls as! [URL], options: nil)
            PHAssetChangeRequest.deleteAssets(imageAssetToDelete)
        }, completionHandler: {success, error in
            print(success ? "Success" : error )
        })

How to make UIImagePickerController for camera and photo library at the same time in swift

Import UIImagePickerControllerDelegate and create a variable to assign UIImagePickerController
var imagePicker = UIImagePickerController() and set imagePicker.delegate = self.

Create an action sheet to display options for 'Camera' and 'Photo library'.

On your button click action:

@IBAction func buttonOnClick(_ sender: UIButton)
{
    self.btnEdit.setTitleColor(UIColor.white, for: .normal)
    self.btnEdit.isUserInteractionEnabled = true
    
    let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
        self.openCamera()
    }))
    
    alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
        self.openGallary()
    }))
    
    alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))
    
    /*If you want work actionsheet on ipad
    then you have to use popoverPresentationController to present the actionsheet,
    otherwise app will crash on iPad */
    switch UIDevice.current.userInterfaceIdiom {
    case .pad:
        alert.popoverPresentationController?.sourceView = sender
        alert.popoverPresentationController?.sourceRect = sender.bounds
        alert.popoverPresentationController?.permittedArrowDirections = .up
    default:
        break
    }
    
    self.present(alert, animated: true, completion: nil)
}

func openCamera()
    {
        if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera))
        {
            imagePicker.sourceType = UIImagePickerController.SourceType.camera
            imagePicker.allowsEditing = true
            self.present(imagePicker, animated: true, completion: nil)
        }
        else
        {
            let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }

    func openGallary()
    {
        imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
    }

Download sample project for Swift, SwiftUI

How to allow user to pick the image with Swift?

If you just want let the user choose image with UIImagePickerController use this code:

import UIKit

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {

    @IBOutlet var imageView: UIImageView!
    @IBOutlet var chooseBuuton: UIButton!
    var imagePicker = UIImagePickerController()

    @IBAction func btnClicked() {

        if UIImagePickerController.isSourceTypeAvailable(.savedPhotosAlbum){
            print("Button capture")

            imagePicker.delegate = self
            imagePicker.sourceType = .savedPhotosAlbum
            imagePicker.allowsEditing = false

            present(imagePicker, animated: true, completion: nil)
        }
    }

    func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!){
        self.dismiss(animated: true, completion: { () -> Void in

        })

        imageView.image = image
    }
}

How to get image from UIImagePickerController and Pass to next VC

1. You need to assign the delegate to your image picker so that the appropriate methods to be called. In your loadImageButtonTapped function, don't forget to assign the image picker delegate.

Then, you should implement this method:

    func imagePickerController (_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]){ 
        // check if an image was selected, 
        // since a images are not the only media type that can be selected
        if let img = info[.originalImage] {
            methodToPassImageToViewController(img)
    }

If you need to find out the size of the image, you cann access it's size property.

2. To pass the image to another view controller, you could use one of these two options:

   • you could use delegation

   • you could use this function for when you navigate from your view controller to another one using storyboard segues:

     func prepareForSegue(_ segue: UIStoryboardSegue, sender sender: AnyObject?) 
     {
          var destinationController = segue.destinationViewController
          // now you can pass the image to the destination view controller
     }
     

P.S: didFinishPickingImage is deprecated since iOS 3, you should not use that method.

Can't Revert Back to Original Image After Using UIImagePickerController

I finally figured it out! It seems that I was confusing xcode with my property names. The code ended up much simpler in the end.

In didFinishPickingMediaWithInfo I created a UIImage and then set it to the bookImageView.image. Later, when I wanted to be able to update the image back to the original image, then I could call the bundle asset, _book.largeBookImage. Voila! The image was able to update immediately.

The most pertinent code is posted below.

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(nonnull NSDictionary<NSString *,id> *)info
{
    [picker dismissViewControllerAnimated:YES completion:nil];

    _chosenImage = [[UIImage alloc] init];
    _chosenImage = [info objectForKey:UIImagePickerControllerOriginalImage];

    _bookImageView.image = _chosenImage;

    _book.wasNewImageAdded = YES;
    _book.originalImageUsed = NO;

    NSString * documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    [self saveImage:_chosenImage withFileName:_book.bookImageID ofType:@"jpg" inDirectory:documentsDirectory];
}

-(void)saveImage:(UIImage *)image withFileName:(NSString *)imageName ofType:(NSString *)extension inDirectory:(NSString *)directoryPath
{
    if ([[extension lowercaseString] isEqualToString:@"png"])
    {
        [UIImagePNGRepresentation(image) writeToFile:[directoryPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.%@", imageName, @"png"]] options:NSAtomicWrite error:nil];

        [self.tableView reloadData];
    }
    else if ([[extension lowercaseString] isEqualToString:@"jpg"] || [[extension lowercaseString] isEqualToString:@"jpeg"])
    {
        [UIImageJPEGRepresentation(image, 1.0) writeToFile:[directoryPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.%@", imageName, @"jpg"]] options:NSAtomicWrite error:nil];

        [self.tableView reloadData];
    }
    else
    {
        //NSLog(@"Image Save Failed\nExtension: (%@) is not recognized, use (PNG/JPG)", extension);
    }
}

-(void)restoreOriginalPhoto
{   
    _book.originalImageUsed = YES;
    _book.wasNewImageAdded = NO;

    _bookImageView.image = _book.largeBookImage;
    _backgroundImage.image = _book.largeBookImage; 
}

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{   
    if (section == 0)
    {
      _bookImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 120, 168)];
        _bookImageView.contentMode = UIViewContentModeScaleAspectFit;
        _bookImageView.clipsToBounds = YES;
        _bookImageView.layer.cornerRadius = 10.0f;

        if (_book.wasNewImageAdded)
        {
            NSString * documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
            UIImage * image = [self loadImageWithFileName:_book.bookImageID ofType:@"jpg" inDirectory:documentsDirectory];
            _bookImageView.image = image;
        }
        else
        {
            _bookImageView.image = _book.largeBookImage;
        }

        if(_book.originalImageUsed)
        {
            _bookImageView.image = _book.largeBookImage;
        }
    }
}

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    if(_book.originalImageUsed)
    {
        _bookImageView.image = _book.largeBookImage;
    }

    [self.tableView reloadData];
    [self.tableView setContentOffset:CGPointZero animated:NO];
}

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