ios - 在 Swift 的文档选择器 View Controller 中显示云存储选项

Question

我正在尝试在我的文档选择器 View Controller 中打开云存储应用程序。我已经应用了文档选择器 View Controller 的所有必要委托(delegate)方法。当我点击一个按钮时，它会显示文档选择器 View ，但其中未显示应用程序图标及其名称。它仅在选择器 View 中显示浏览选项。我想在前面显示所有存储。我的代码是这样的，

@IBAction func cloudBtnTapped(_ sender: Any) {

    let importMenu = UIDocumentMenuViewController(documentTypes: [String(kUTTypePDF),String(kUTTypeZipArchive), String (kUTTypePNG), String (kUTTypeJPEG), String (kUTTypeText),String (kUTTypePlainText)], in: .import)
    importMenu.delegate = self
    importMenu.modalPresentationStyle = .fullScreen
    self.present(importMenu, animated: true, completion: nil)
}
 func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {

    cico = url as URL as NSURL
    print("The Url is : /(cico)", cico)

    // Start background thread so that image loading does not make app unresponsive
    DispatchQueue.global(qos: .userInitiated).async {

        let imageData:NSData = NSData(contentsOf: self.cico as URL)!

        // When from background thread, UI needs to be updated on main_queue
        DispatchQueue.main.async {
            let image = UIImage(data: imageData as Data)
            self.image1.image = image
        }
    }

    do {
        let weatherData = try NSData(contentsOf: cico as URL, options: NSData.ReadingOptions())
        let activityItems = [weatherData]
        let activityController = UIActivityViewController(activityItems: activityItems, applicationActivities: nil)
        if UI_USER_INTERFACE_IDIOM() == .phone {
            self.present (activityController, animated: true, completion: {
                print("Hello")
            })
        }
        else {
            let popup = UIPopoverController(contentViewController: activityController)
            popup.present(from: CGRect(x: CGFloat(self.view.frame.size.width / 2), y: CGFloat(self.view.frame.size.height / 4), width: CGFloat(0), height: CGFloat(0)), in: self.view, permittedArrowDirections: .any, animated: true)
        }
    } catch {
        print(error)
    }
    //optional, case PDF -> render
    //displayPDFweb.loadRequest(NSURLRequest(url: cico) as URLRequest)
}


func documentMenu(_ documentMenu:     UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {

    documentPicker.delegate = self
    present(documentPicker, animated: true, completion: nil)
}

func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {

    print(" cancelled by user")

   // dismiss(animated: true, completion: nil)
    _ = navigationController?.popViewController(animated: true)
}

当点击按钮时，它会显示这样的文档选择器 View ，

但我想要这个 .像这样的选择器 View ，

我怎样才能显示这个？

Answer 1

UIDocumentMenuViewController 会自动显示诸如 dropbox、google drive 之类的选项，如果你已经在你的设备上安装了它，否则它不会显示。

您还可以通过以下方法向菜单添加一些自定义选项...addOptionWithTitle:image:order:handler: 方法。

您可以使用 UIDocumentPickerViewController 从"file"应用或 iCloud Drive 获取文件。

let options = [kUTTypePDF as String, kUTTypeZipArchive  as String, kUTTypePNG as String, kUTTypeJPEG as String, kUTTypeText  as String, kUTTypePlainText as String]

let documentPicker: UIDocumentPickerViewController = UIDocumentPickerViewController(documentTypes: options, in: .import)
documentPicker.delegate = self            
documentPicker.modalPresentationStyle = .fullScreen
self.present(documentPicker, animated: true, completion: nil)


extension YourViewController: UIDocumentPickerDelegate {

   func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {

    //from url you can get selected item
   }
}