在iOS11中，無法通過“ALAssetsLibrary”或“PHPhotoLibrary”命令獲取權限

Question

當我嘗試確定用戶是否具有打開相冊的權限時，xcode 告訴我這不起作用。

let authStatus = ALAssetsLibrary.authorizationStatus()
return authStatus != .restricted && authStatus != .denied

xcode 提醒我

'使用未解析的標識符'ALAssetsLibrary'

Xcode截圖

當我嘗試在 AppDelegate 上使用“PHPhotoLibrary”時

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.


    switch PHPhotoLibrary.authorizationStatus() {
    case PHAuthorizationStatus.NotDetermined: // 用戶暫未權限認證
        print("PHAuthorizationStatus.NotDetermined")
        // 權限認證
        PHPhotoLibrary.requestAuthorization { (status:PHAuthorizationStatus) -> Void in
            print(status)
        }
    case PHAuthorizationStatus.Restricted: // APP禁止使用相冊權限認證
        print("PHAuthorizationStatus.Restricted")
    case PHAuthorizationStatus.Denied: // 用戶拒絕使用相冊
        print("PHAuthorizationStatus.Denied")
        print("請進入 設置 -> 隱私 -> 相冊 開啟權限")
    // 設置-隱私-相冊
    case PHAuthorizationStatus.Authorized: // 用戶允許使用相冊
        print("PHAuthorizationStatus.Authorized")
    }


    return true
}

xcode 也告訴我

使用未解析的標識符“PHPhotoLibrary”

Answer 1

好的，我已經知道答案是什么了，一切正常后在swift文件頂部添加“導入照片”

“PHPhotoLibrary”按以下方式正確使用。

func AlbumPermissions() -> Int { // Photos Permissions
switch PHPhotoLibrary.authorizationStatus() {
    
case .notDetermined:// User has not permitted the permission
    print("PHAuthorizationStatus.NotDetermined")
    
    PHPhotoLibrary.requestAuthorization { (status:PHAuthorizationStatus) -> Void in
        print(status)
    }
    
    return 0
case .restricted:// APP reject the permission of Photos
    print("PHAuthorizationStatus.Restricted")
    return 1
case .denied:// Users denied the Photos permission
    print("PHAuthorizationStatus.Denied")
    print("Please go to Setting to turn on the Photos permission.")
    return 2
case .authorized: // User permit the Photos permission.
    print("PHAuthorizationStatus.Authorized")
    return 3
}}