How to access files in iCloud Drive from within my iOS app?

Question

Is there a way to choose file from iCloud Drive similar way to UIImagePickerController()?

Answer 1

You can present controller the following way:

let documentPickerController = UIDocumentPickerViewController(documentTypes: [String(kUTTypePDF), String(kUTTypeImage), String(kUTTypeMovie), String(kUTTypeVideo), String(kUTTypePlainText), String(kUTTypeMP3)], inMode: .Import)
documentPickerController.delegate = self
presentViewController(documentPickerController, animated: true, completion: nil)

In your delegate implement the method:

func documentPicker(controller: UIDocumentPickerViewController, didPickDocumentAtURL url: NSURL)

Note that you don't need to set up iCloud Entitlement to use UIDocumentPickerViewController. Apple provides sample code that demonstrates how to use this controller here

Answer 2

Swift 4.X

You need to enable iCloud entitlements in XCode Capabilities. Also you have to turn on iCloud in you app bundle in developer account of Apple. Once you do this, you are able to present document picker controller by following way:

Use UIDocumentPickerDelegate methods

extension YourViewController : UIDocumentMenuDelegate, UIDocumentPickerDelegate,UINavigationControllerDelegate {

    func documentMenu(_ documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {
        documentPicker.delegate = self
        self.present(documentPicker, animated: true, completion: nil)
    }

    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
        print("url = \(url)")
    }

    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
        dismiss(animated: true, completion: nil)    
    }
}

Add below code for Button Action

@IBAction func didPressAttachment(_ sender: UIButton) {

        let importMenu = UIDocumentMenuViewController(documentTypes: [String(kUTTypePDF)], in: .import)
        importMenu.delegate = self
        importMenu.modalPresentationStyle = .formSheet

        if let popoverPresentationController = importMenu.popoverPresentationController {
            popoverPresentationController.sourceView = sender
            // popoverPresentationController.sourceRect = sender.bounds
        }
         self.present(importMenu, animated: true, completion: nil)

    }

This is working fine for me. Hope it helps you too.

Happy coding :)

Answer 3

The document picker calls the delegate’s documentPicker:didPickDocumentAtURL: method when the user selects a destination outside your app’s sandbox. The system saves a copy of your document to the specified destination. The document picker provides the copy’s URL to indicate success; however, your app does not have access to the file referred to by this URL. Link

This code work for me:

func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
        let url = urls[0]
        let isSecuredURL = url.startAccessingSecurityScopedResource() == true
        let coordinator = NSFileCoordinator()
        var error: NSError? = nil
        coordinator.coordinate(readingItemAt: url, options: [], error: &error) { (url) -> Void in
            _ = urls.compactMap { (url: URL) -> URL? in
                // Create file URL to temporary folder
                var tempURL = URL(fileURLWithPath: NSTemporaryDirectory())
                // Apend filename (name+extension) to URL
                tempURL.appendPathComponent(url.lastPathComponent)
                do {
                    // If file with same name exists remove it (replace file with new one)
                    if FileManager.default.fileExists(atPath: tempURL.path) {
                        try FileManager.default.removeItem(atPath: tempURL.path)
                    }
                    // Move file from app_id-Inbox to tmp/filename
                    try FileManager.default.moveItem(atPath: url.path, toPath: tempURL.path)


                    YourFunction(tempURL)
                    return tempURL
                } catch {
                    print(error.localizedDescription)
                    return nil
                }
            }
        }
        if (isSecuredURL) {
            url.stopAccessingSecurityScopedResource()
        }

        navigationController?.dismiss(animated: true, completion: nil)
    }