PHAsset 无法获取

Posted 2023-03-08

【中文标题】PHAsset 无法获取

【英文标题】：PHAsset is failed to fetch

【发布时间】：2020-05-19 18:02:00

【问题描述】：

我正在尝试从 ios 应用中的照片库中获取照片。我正在使用照片框架。 但是我在尝试这样做时遇到了错误，即使我只是在获得授权时才这样做：

[core] "从守护进程返回的错误：Error Domain=com.apple.accounts 代码=7 "(null)""

获取资产的代码如下：

    func requestAuthorization() 
        phphotoLibrary.requestAuthorization  [weak self] (status) in
            guard let self = self else  return 
            switch status 
            case .authorized:
                self.getAllPhotos()
            case .denied:
                break
            case .notDetermined:
                break
            case .restricted:
                break
            @unknown default:
                break
            
        
    

    private func getAllPhotos() 
        let assets: PHFetchResult = PHAsset.fetchAssets(with: .image, options: nil)
        // rest of the codebase
    

【参考方案1】：

您好，这里是工作代码示例：

      public enum FetchResults 
        case success(response: [PHAsset])
        case error(error: Error)
    

    public static func fetch(_ completion: @escaping (FetchResults) -> Void) 
        guard PHPhotoLibrary.authorizationStatus() == .authorized else 
            let error: NSError = NSError(domain: "PhotoLibrary Error", code: 1, userInfo: [NSLocalizedDescriptionKey: "No PhotoLibrary Access"])
            completion(FetchResults.error(error: error))
            return
        

        DispatchQueue.global(qos: .userInitiated).async 
            let fetchResult = PHAsset.fetchAssets(with: .image, options: PHFetchOptions())

            if fetchResult.count > 0 
                var assets = [PHAsset]()
                fetchResult.enumerateObjects  object, _, _ in
                    assets.insert(object, at: 0)
                

                DispatchQueue.main.async 
                    completion(FetchResults.success(response: assets))