尝试使用 FileManager 移动项目时出错

Question

我有一些项目保存在文档目录中。我目前需要将它们以编程方式移动到另一个目录。我成功创建了新目录，但在使用 FileManager.default.moveItem.

时似乎没有看到它

用于创建目录的代码。

let path = getDocumentsDirectory().appendingPathComponent("Media").path

        do{
            try FileManager.default.createDirectory(atPath: path, withIntermediateDirectories: false, attributes: nil)

            print("\nDIRECTORY 'Media' CREATED")
        }catch {
            print("\nDIRECTORY 'Media' WAS NOT ABLE TO BE CREATED")
            print("ERROR - \(error)")
        }

我使用此代码检查我的 URL。

let mediaURL = getDocumentsDirectory().appendingPathComponent("Media")
print("\nMEDIA URL: \(mediaURL)")

输出这个。

MEDIA URL:file:///Users/joseph/Library/Developer/CoreSimulator/Devices/552B72BF-8929-40EE-A75B-4574D3D2918A/data/Containers/Data/Application/E168B872-6A1D-4D78-B460-D45194088E5B/Documents/Media/

这是我用来移动项目的代码。

do{
    try FileManager.default.moveItem(at: url, to: mediaURL)

    print("\nFILE MOVED TO NEW MEDIA PATH SUCCESSFULLY")
}catch {
    print("\nCOULDN'T MOVE FILE TO NEW MEDIA PATH")
    print("ERROR - \(error)")
}

这是我在尝试移动的每件商品时收到的错误。

无法将文件移动到新媒体路径错误 - 错误域=NSCocoaErrorDomain 代码=516 ““image_5”无法移至“文档”，因为已存在同名项目。” UserInfo= {NSSourceFilePathErrorKey=/Users/joseph/Library/Developer/CoreSimulator/Devices/552B72BF-8929-40EE-A75B-4574D3D2918A/data/Containers/Data/Application/E168B872-6A1D-4D78-B460-D45194088E5B/Documents/image_5, NSUserStringVariant=( 移动 ), NSDestinationFilePath=/Users/joseph/Library/Developer/CoreSimulator/Devices/552B72BF-8929-40EE-A75B-4574D3D2918A/data/Containers/Data/Application/E168B872-6A1D-4D78-B460-D45194088E5B/Documents/Media, NSFilePath=/Users/joseph/Library/Developer/CoreSimulator/Devices/552B72BF-8929-40EE-A75B-4574D3D2918A/data/Containers/Data/Application/E168B872-6A1D-4D78-B460-D45194088E5B/Documents/image_5, NSUnderlyingError=0x60000024fff0 {Error Domain=NSPOSIXErrorDomain Code=17 "File exists"}}

媒体目录应该是空的，因为它是新创建的，所以我收到的错误有点令人困惑。它还说它正在尝试将其移动到 'Documents'，但它应该移动到 'Media'。导致此问题的原因是什么，我该如何解决？我只是想将 'Documents' 中保存的项目移动到新目录 'Media'.

Answer 1

您必须将文件名附加到目标 URL。根据文档：

The new location for the item in srcURL. The URL in this parameter must not be a file reference URL and must include the name of the file or directory in its new location. This parameter must not be nil.

Answer 2

删除旧文件（如果存在）

let url = NSUrl(string: "...")
if NSFileManager.defaultManager().fileExistsAtPath(url.path!) {
    try! NSFileManager.defaultManager().removeItemAtURL(url)
}

更新：

Swift 5.1.2

let url = URL(string: mp3FilePath)
if FileManager.default.fileExists(atPath: url!.path) {
    try! FileManager.default.removeItem(at: url!)
}

Answer 3

这对我有用 - 在目标路径中也添加文件名

let nameFile = (songPath as NSString).lastPathComponent
let fileDest = destinationDirectoryPath + "/" + nameFile
//Now move the song files
try fileManager.moveItem(atPath: sourceFilePath, toPath: fileDest)

尝试使用 FileManager 移动项目时出错

Error when attempting to move item using FileManager

xcode

nsfilemanager

ios

swift