ios - 如何从我的 iphone 为我的应用程序浏览 pdf 文件，就像我能够通过 ibooks 浏览 pdf 文件一样？

Question

就像使用 UIImagePickerViewController 浏览 UIIMage 一样。有没有办法在 Swift/目标代码中浏览另一个文件？

if let fileURL = NSBundle.mainBundle().URLForResource("MyImage", withExtension: "jpg") {
            // Instantiate the interaction controller
            self.docController = UIDocumentInteractionController(URL: fileURL)
        }
        else {
            shareButton.enabled = false
            print("File missing! Button has been disabled")
        }

Answer 1

您只能访问文档文件夹中的文件。访问所有文件

let fileManager = FileManager.default
let documentsURL = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0]
do {
    let fileURLs = try fileManager.contentsOfDirectory(at: documentsURL, includingPropertiesForKeys: nil)
    // process files
} catch {
    print("Error while enumerating files \(documentsURL.path): \(error.localizedDescription)")
}

如果您想要单个文件，请查看以下代码:

// Get the document directory url
let documentsUrl =  FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!

do {
    // Get the directory contents urls (including subfolders urls)
    let directoryContents = try FileManager.default.contentsOfDirectory(at: documentsUrl, includingPropertiesForKeys: nil, options: [])
    print(directoryContents)

    // if you want to filter the directory contents you can do like this:
    let mp3Files = directoryContents.filter{ $0.pathExtension == "mp3" }
    print("mp3 urls:",mp3Files)
    let mp3FileNames = mp3Files.map{ $0.deletingPathExtension().lastPathComponent }
    print("mp3 list:", mp3FileNames)

} catch {
    print(error.localizedDescription)
}