Question

我使用解析器将一些文件下载到设备上并且一切都很好但我想将文件从默认缓存目录中移动，这是解析存储它们的地方（/ Library / Caches / PFFileCache /）到更稳定的地方说用户文档目录。

我得到的本地化错误是：

Error: “7b54d8a0f1a64b710058d4408ca4d696_The%20Name%20of%20the%20Wind%2029-92.mp3” couldn’t be moved to “Documents” because either the former doesn't exist, or the folder containing the latter doesn't exist.

但我确信两者都存在。这可能与名称有关，因为当我从PFFile获取名称时，文件名中没有编码的％20。

这是我的代码块：

    let cachedPFFile = object.object(forKey: "partAudio") as! PFFile
        print(cachedPFFile)
    let getCachedFilePath = cachedPFFile.getPathInBackground()
        getCachedFilePath.waitUntilFinished()
    let cachedFilePath = getCachedFilePath.result as! String
        print(cachedFilePath)

    let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
    let documentsDirectory = String(describing: paths[0])

    let saveDirectory = documentsDirectory.appending(cachedPFFile.name)

        print(documentsDirectory)
        print(saveDirectory)

    let fileManager = FileManager.default

    if fileManager.fileExists(atPath: saveDirectory) == false {

        do {
            try fileManager.moveItem(atPath: cachedFilePath, toPath: saveDirectory)
            print("Move successful")
        } catch let error {
            print("Error: \(error.localizedDescription)")
        }

    }

这是整个日志：

<PFFile: 0x608000458f00>
2017-02-20 18:42:35.430 ParseStarterProject-Swift[2260:55934] Warning: A long-running operation is being executed on the main thread. 
 Break on warnBlockingOperationOnMainThread() to debug.
/Users/Genie/Library/Developer/CoreSimulator/Devices/A2FB00CE-B018-4FDF-9635-35FD6678DF8D/data/Containers/Data/Application/BA7C112C-BECB-4734-8C67-A9CB84F0E1F3/Library/Caches/Parse/PFFileCache/7b54d8a0f1a64b710058d4408ca4d696_The%20Name%20of%20the%20Wind%2029-92.mp3
file:///Users/Genie/Library/Developer/CoreSimulator/Devices/A2FB00CE-B018-4FDF-9635-35FD6678DF8D/data/Containers/Data/Application/BA7C112C-BECB-4734-8C67-A9CB84F0E1F3/Documents/
file:///Users/Genie/Library/Developer/CoreSimulator/Devices/A2FB00CE-B018-4FDF-9635-35FD6678DF8D/data/Containers/Data/Application/BA7C112C-BECB-4734-8C67-A9CB84F0E1F3/Documents/7b54d8a0f1a64b710058d4408ca4d696_The Name of the Wind 29-92.mp3
Error: “7b54d8a0f1a64b710058d4408ca4d696_The%20Name%20of%20the%20Wind%2029-92.mp3” couldn’t be moved to “Documents” because either the former doesn't exist, or the folder containing the latter doesn't exist.

我对此感到困惑，因为文件和新目录都存在？

虽然我不确定“file：/// Users”，因为这在finder中不起作用，必须使用真正的路径“/ Users”如何从中删除“file：//”字符串的开头??

此外，我一直在搜索如何在文件名的空格中添加％20，但没有明显的选项似乎没有用。

Answer 1

您有线程问题。你对“waitUntilFinished”的整个想法是错误的。你无法阻止主线程 - 而且你会收到警告告诉你。听那个警告！

请勿致电getFilePathInBackground，不要等待下载完成。相反，调用getFileInBackgroundWithBlock:和中的继续执行其余代码，即移动文件。

下载后移动文件

1 个答案: