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how to recent image fetch in swift

Murad_9288 answered on September 4, 2023 Popularity 6/10 Helpfulness 6/10

answer how to recent image fetch in swift

how to recent image fetch in swift

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import UIKit
import Photos

class RecentImageViewController: UIViewController {

    @IBOutlet weak var recentImageCollectionView: UICollectionView!
    var recentImageArray : [UIImage] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.photoLibraryAccess()
        self.recentCollectionViewSetUP()
    }
    
    private func recentCollectionViewSetUP() {
        let nib = UINib(nibName: "RecentImageCollectionViewCell", bundle: nil)
        self.recentImageCollectionView.register(nib, forCellWithReuseIdentifier: "cell")
        self.recentImageCollectionView.dataSource = self
        self.recentImageCollectionView.delegate = self
    }
    
    func photoLibraryAccess() {
        PHPhotoLibrary.requestAuthorization { status in
            switch status {
            case .authorized:
                self.fethTheRecentImagePhotoLibary()
            case .denied, .restricted:
                print("The user hasn't made a denied and restricted.")
            case .notDetermined:
                print("The user hasn't made a decision yet.")
            case .limited:
                print("This limit cross.")
            @unknown default:
                break
            }
        }
    }
    
    private func fethTheRecentImagePhotoLibary () {
        let fetchOptions = PHFetchOptions()
        fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
        fetchOptions.fetchLimit = 30
        let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.image, options: fetchOptions)
        
        DispatchQueue.main.async {
            if fetchResult.count > 0 {
                let totalImageCountNeeded = 30
                self.fetchPhotoAtIndex(0, totalImageCountNeeded, fetchResult)
            }
        }
        
    }
    
    private func fetchPhotoAtIndex(_ index:Int, _ totalImageCountNeeded: Int, _ fetchResult: PHFetchResult<PHAsset>) {
        let requestOptions = PHImageRequestOptions()
        requestOptions.isSynchronous = true

        PHImageManager.default().requestImage(for: fetchResult.object(at: index) as PHAsset, targetSize: view.frame.size, contentMode: PHImageContentMode.aspectFill, options: requestOptions, resultHandler: { (image, _) in
            if let image = image {
                self.recentImageArray += [image]
            }
            
            if index + 1 < fetchResult.count && self.recentImageArray.count < totalImageCountNeeded {
                self.fetchPhotoAtIndex(index + 1, totalImageCountNeeded, fetchResult)
            } else {
                self.recentImageCollectionView.reloadData()
            }
        })
    }
}

Popularity 6/10 Helpfulness 6/10 Language swift

Source: Grepper

Tags: fetch get image photo photos swift

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Contributed on Sep 04 2023

Murad_9288

0 Answers Avg Quality 2/10

how to recent image fetch in swift

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