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How to upload a file to Google Drive from Android

I spent more than one day, but did not get any working solution that provided upload / download files on Google Drive.

I tried Google Play Service, but I did not find a way to upload / download files.

I am trying to use the Google client libraries, but some methods are not allowed.

eg:

service.files().insert(body, mediaContent).execute();
errors: The method execute() is undefined for the type Drive.Files.Insert

I can upload the image through the code below, but it’s a Google Drive file downloader. I can only upload one file at a time.

mFile = new java.io.File(fileList.get(i));
                Log.i(TAG, "Creating new contents.");
                Drive.DriveApi.newContents(mGoogleApiClient).addResultCallback(
                        new OnNewContentsCallback() {

                            @Override
                            public void onNewContents(ContentsResult result) {

                                if (!result.getStatus().isSuccess()) {
                                    Log.i(TAG, "Failed to create new contents.");
                                    return;
                                }

                                Log.i(TAG, "New contents created.");

                                OutputStream outputStream = result
                                        .getContents().getOutputStream();

                                byte[] byteStream = new byte[(int) mFile
                                        .length()];
                                try {
                                    outputStream.write(byteStream);
                                } catch (IOException e1) {
                                    Log.i(TAG, "Unable to write file contents.");
                                }

                                MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
                                        .setMimeType("image/jpeg")
                                        .setMimeType("text/html")
                                        .setTitle("Android Photo.png").build();
                                // Create an intent for the file chooser, and
                                // start it.
                                IntentSender intentSender = Drive.DriveApi
                                        .newCreateFileActivityBuilder()
                                        .setInitialMetadata(metadataChangeSet)
                                        .setInitialContents(
                                                result.getContents())
                                        .build(mGoogleApiClient);
                                try {
                                    mActivity.startIntentSenderForResult(
                                            intentSender, REQUEST_CODE_CREATOR,
                                            null, 0, 0, 0);
                                    publishProgress(1);
                                } catch (SendIntentException e) {
                                    Log.i(TAG, "Failed to launch file chooser.");
                                    publishProgress(0);
                                }
                            }
                        });

But still struggling to download the file.

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4 answers

, , . Android API . java-, Google , java-.

, Google Play. java , , , , .

, Google doc Google android api, java- .

, , , , Java.

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Google

Drive.Files.Insert insert;
try {
    final java.io.File uploadFile = new java.io.File(filePath);
    File fileMetadata = new File();
    ParentReference newParent = new ParentReference();
    newParent.setId(upload_folder_ID);
    fileMetadata.setParents(
            Arrays.asList(newParent));
    fileMetadata.setTitle(fileName);
    InputStreamContent mediaContent = new InputStreamContent(MIMEType, new BufferedInputStream(
                new FileInputStream(uploadFile) {
                    @Override
                    public int read(byte[] buffer,
                            int byteOffset, int byteCount)
                            throws IOException {
                        // TODO Auto-generated method stub
                        Log.i("chauster","progress = "+byteCount);
                        return super.read(buffer, byteOffset, byteCount);
                    }
                }));
            mediaContent.setLength(uploadFile.length());
    insert = service.files().insert(fileMetadata, mediaContent);
    MediaHttpUploader uploader = insert.getMediaHttpUploader();
    FileUploadProgressListener listener = new FileUploadProgressListener();
    uploader.setProgressListener(listener);
    uploader.setDirectUploadEnabled(true);
    insert.execute();
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

public class FileUploadProgressListener implements MediaHttpUploaderProgressListener {

    @SuppressWarnings("incomplete-switch")
    @Override
    public void progressChanged(MediaHttpUploader uploader) throws IOException {
        switch (uploader.getUploadState()) {
            case INITIATION_STARTED:
                break;
            case INITIATION_COMPLETE:
                break;
            case MEDIA_IN_PROGRESS:
                break;
            case MEDIA_COMPLETE:
                break;
        }
    }
}

google drive

0

Google SDK Android. , Android, Android! Google IO, ,

Library simplifies authentication

 /** Authorizes the installed application to access user protected data. */
  private static Credential authorize() throws Exception {
    // load client secrets
    GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
        new InputStreamReader(CalendarSample.class.getResourceAsStream("/client_secrets.json")));
    // set up authorization code flow
    GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
        httpTransport, JSON_FACTORY, clientSecrets,
        Collections.singleton(CalendarScopes.CALENDAR)).setDataStoreFactory(dataStoreFactory)
        .build();
    // authorize
    return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
  }

The library runs on Google App Engine

Media Download

class CustomProgressListener implements MediaHttpUploaderProgressListener {
  public void progressChanged(MediaHttpUploader uploader) throws IOException {
    switch (uploader.getUploadState()) {
      case INITIATION_STARTED:
        System.out.println("Initiation has started!");
        break;
      case INITIATION_COMPLETE:
        System.out.println("Initiation is complete!");
        break;
      case MEDIA_IN_PROGRESS:
        System.out.println(uploader.getProgress());
        break;
      case MEDIA_COMPLETE:
        System.out.println("Upload is complete!");
    }
  }
}

File mediaFile = new File("/tmp/driveFile.jpg");
InputStreamContent mediaContent =
    new InputStreamContent("image/jpeg",
        new BufferedInputStream(new FileInputStream(mediaFile)));
mediaContent.setLength(mediaFile.length());

Drive.Files.Insert request = drive.files().insert(fileMetadata, mediaContent);
request.getMediaHttpUploader().setProgressListener(new CustomProgressListener());
request.execute();

You can also use the resume mass download function without special libraries related to the service. Here is an example:

File mediaFile = new File("/tmp/Test.jpg");
InputStreamContent mediaContent =
    new InputStreamContent("image/jpeg",
        new BufferedInputStream(new FileInputStream(mediaFile)));
mediaContent.setLength(mediaFile.length());

MediaHttpUploader uploader = new MediaHttpUploader(mediaContent, transport, httpRequestInitializer);
uploader.setProgressListener(new CustomProgressListener());
HttpResponse response = uploader.upload(requestUrl);
if (!response.isSuccessStatusCode()) {
  throw GoogleJsonResponseException(jsonFactory, response);
}
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After several days of searching for a good example, I found that the Google I / O application on GitHub has excellent utility methods for creating, updating, and reading files from Drive.

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