将文件从包复制到库文件夹(IOS10、Swift3、xcode 8.2）

Question

下面是我的代码，用于将文件夹从bundle复制到库。

    let library = FileManager.default.urls(for: .libraryDirectory, in: .userDomainMask)[0]
    let bundle = Bundle.main.path(forResource: "MYFOLDER", ofType: "")!

    let fileManager = FileManager.default
    do
    {
        try fileManager.copyItem(atPath: bundle, toPath: library.path)
        print("NO CATCH")
    }
    catch
    {
            print(error)
    }

我得到这个错误：

**但我检查了它在库文件夹中不存在*

Answer 1

根据您的错误，文件已经存在。尝试此代码并检查

  let path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
let url = NSURL(fileURLWithPath: path)
let filePath = url.appendingPathComponent("NewFolder")?.path
let fileManager = FileManager.default
if fileManager.fileExists(atPath: filePath!) {
    print("FILE AVAILABLE")
} else {
    print("FILE NOT AVAILABLE")
}