如何阅读和打开iOS应用程序文档目录中的文件？

Question

I've copied a folder into the documents directory, and I'm able to enumerate the directory's contents, but when I check if the enumerated URL exists and is readable, I get false. How do I read and use these files?

let imagesURL = copyPath.appendingPathComponent("images", isDirectory: true)
guard let fileEnumerator = FileManager.default.enumerator(at: imagesURL, includingPropertiesForKeys: nil, options: FileManager.DirectoryEnumerationOptions()) else { return }
while let file = fileEnumerator.nextObject() {
    guard let filepath = file as? NSURL else { continue }
    print(filepath.absoluteString!)
    let isReadable = FileManager.default.isReadableFile(atPath: filepath.absoluteString!)
    let exists = FileManager.default.fileExists(atPath: filepath.absoluteString!)
    print("isReadable: \(isReadable), exists: \(exists)")
}

Answer 1

absoluteString is the wrong API. You have to get paths in the file system with the path property.

And for consistency please name the URL as fileURL

...
guard let fileURL = file as? URL else { continue }
print(fileURL.path)
let isReadable = FileManager.default.isReadableFile(atPath: fileURL.path)
let exists = FileManager.default.fileExists(atPath: fileURL.path)
...