upload image and attempt OCR from Drive Android API

Question

I'm trying to upload an image to google drive from android code and perform ocr on it. Can't figure out how the ocr option should be requested. I read several answers here on SO saying there is a .insert() method somewhere that I should be using but I can't find such a method. The Android Developer site fails to provide proper documentation on this api.

If someone could just tell me what to add to my code please:

public class MainActivity extends Activity implements
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {

...

    private class EditFileAsyncTask extends AsyncTask<DriveApi.ContentsResult, Void, Boolean> {

        @Override
        protected Boolean doInBackground(DriveApi.ContentsResult... params) {
            DriveApi.ContentsResult contentsResult = params[0];
            if (!contentsResult.getStatus().isSuccess()) {
                showMessage("Failed to create new contents.");
                return false;
            }
            showMessage("New contents created.");
            OutputStream outputStream = contentsResult.getContents().getOutputStream();
            ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
            mBitmapToSave.compress(Bitmap.CompressFormat.PNG, 100, bitmapStream);
            try {
                outputStream.write(bitmapStream.toByteArray());
            } catch (IOException e) {
                showMessage("Unable to write file contents.");
                e.printStackTrace();
            }

            MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
                    .setMimeType("image/jpeg")
                    .setTitle("rochale1.jpg")
                    .build();

            IntentSender intentSender = Drive.DriveApi
                    .newCreateFileActivityBuilder()
                    .setInitialMetadata(metadataChangeSet)
                    .setInitialContents(contentsResult.getContents())
                    .build(mGoogleApiClient);
            try {
                startIntentSenderForResult(intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0);
            } catch (SendIntentException e) {
                showMessage("Failed to launch file chooser.");
                e.printStackTrace();
            }
            return true;
        }

        @Override
        protected void onPostExecute(Boolean result) {
            if (!result) {
                showMessage("Error while editing contents");
                return;
            }
            showMessage("Successfully edited contents");
        }
    }
}

I am assuming this task would be the place to request ocr, if not please tell me.

Answer 1

Here is a PHP script to upload the file using insert method which seems to be the task you are trying to accomplish for Android - not sure if this will help but this does explain the insert method below....

You can also edit the file properties after its loaded which might be a solution for you using "patch" method

https://developers.google.com/drive/v2/reference/files/patch

https://developers.google.com/drive/v2/reference/files/insert

function uploadFile($service,$title,$description,$filePath,$mtype){

//Insert a file
$file = new Google_Service_Drive_DriveFile();
$file->setTitle($title.".pdf");
$file->setDescription($description);
$file->setMimeType('application/pdf');

$data = file_get_contents($filePath);

sleep(1);

$createdFile = $service->files->insert($file, array(
      'data' => $data,
      'mimeType' => $mtype,
      'uploadType' => 'multipart',
      'convert' => true,
          'ocr'=> true
    ));


return ($createdFile);

}