使用Swift将照片保存到多媒体资料库中的文件夹

import UIKit
import Photos

func savePhotoToLibrary(image: UIImage) {
    PHPhotoLibrary.requestAuthorization { (status) in
        if status == .authorized {
            PHPhotoLibrary.shared().performChanges({
                let request = PHAssetChangeRequest.creationRequestForAsset(from: image)
                let assetPlaceholder = request.placeholderForCreatedAsset
                let albumChangeRequest = PHAssetCollectionChangeRequest(for: self.getAlbum())
                albumChangeRequest?.addAssets([assetPlaceholder!] as NSArray)
            }, completionHandler: { (success, error) in
                if success {
                    print("照片保存成功")
                } else {
                    print("照片保存失败：\(error?.localizedDescription)")
                }
            })
        }
    }
}

func getAlbum() -> PHAssetCollection {
    let albumName = "MyAlbum" // 自定义相册的名称
    
    var album: PHAssetCollection?
    let albums = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: nil)
    
    albums.enumerateObjects({ (collection, _, _) in
        if collection.localizedTitle == albumName {
            album = collection
        }
    })
    
    if album == nil {
        PHPhotoLibrary.shared().performChangesAndWait {
            PHAssetCollectionChangeRequest.creationRequestForAssetCollection(withTitle: albumName)
        }
        album = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: nil).firstObject
    }
    
    return album!
}

let image = UIImage(named: "example.jpg") // 要保存的照片
savePhotoToLibrary(image: image!)