Google Drive API append file?

Google Drive API append file?

By : Dietrich Gebert
Date : November 28 2020, 09:01 AM
I hope this helps . Yes you really have to download edit the file and upload it again. There is no way to programmatically edit a file. Except maybe a spreadsheet but then you would be using the Google sheets API and not the Google drive API.
code :

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Couldn't append the text onto a Google Drive File

Couldn't append the text onto a Google Drive File

By : lolka
Date : March 29 2020, 07:55 AM
I hope this helps you . Finally I've found the answer to append the text on the drive document.
code :
 DriveContents contents = driveContentsResult.getDriveContents();

 try {

      String input = et.getText().toString();

      ParcelFileDescriptor parcelFileDescriptor = contents.getParcelFileDescriptor();
      FileInputStream fileInputStream = new FileInputStream(parcelFileDescriptor

      // Read to the end of the file.

     fileInputStream.read(new byte[fileInputStream.available()]);

      // Append to the file.
      FileOutputStream fileOutputStream = new FileOutputStream(parcelFileDescriptor
      Writer writer = new OutputStreamWriter(fileOutputStream);

      driveContentsResult.getDriveContents().commit(mGoogleApiClient, null);

 } catch (IOException e) {
Google drive api - com.google.api.services.drive.Drive.files() - None of the File objects have permissions?

Google drive api - com.google.api.services.drive.Drive.files() - None of the File objects have permissions?

By : N.Smits
Date : March 29 2020, 07:55 AM
it should still fix some issue Are you using the fields option to include permissions? I don't generally use the Java SDK, but I think look into setFields()
How to get (and append) content of a text file on Google Drive

How to get (and append) content of a text file on Google Drive

By : Zinith Patel
Date : March 29 2020, 07:55 AM
This might help you This should be super easy, but somehow I cannot figure it out by myself... I want to get content of a txt file from Google Drive Api v3, using (for example) python. According to docs (https://developers.google.com/drive/api/v3/reference/files/get) get method "Gets a file's metadata or content by ID." Here is what I have: , Answer for question 1 :
How about this modification?
code :
body =  service.files().get(fileId="rGCalhPNeL9HejmmHCJhyt2aBRG40hDhb")
body = service.files().get_media(fileId="rGCalhPNeL9HejmmHCJhyt2aBRG40hDhb").execute()
Append to google drive file wihout user selection

Append to google drive file wihout user selection

By : Abivarma Chandrakuma
Date : March 29 2020, 07:55 AM
wish of those help According to the documentation for the GDAA (Google Drive Android API), it should be possible to download a file based on its ID alone by using asDriveFile().
To do that you need a query and then store the information in a Task, and then should be able to files.get(0).asDriveFile() in the method where you are attempting to download by FileId. But even when pulling the metadata and use the query method, you are greeted with IllegalArgumentException invalid DriveId (which IS THE SAME ID, so it was never invalid), But it STILL shows it as invalid. I got tired of wrestling with it and went to the REST API.
code :
// Copyright 2018 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//     http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.

// [START drive_quickstart]
import java.io.BufferedWriter;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.GeneralSecurityException;
import java.util.Collections;
import java.util.List;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;

public class DriveQuickstart {
    private static final String APPLICATION_NAME = "Google Drive API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";
    private static String fileId = "super_secret_string";
    private static final String OUTPUT = "super_secret_path";

     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved credentials/ folder.
    private static final List<String> SCOPES = Collections.singletonList(DriveScopes.DRIVE); //DONT USE THIS SCOPE IN PRODUCTION!
    private static final String CREDENTIALS_FILE_PATH = "/credentials.json";

     * Creates an authorized Credential object.
     * @param HTTP_TRANSPORT The network HTTP Transport.
     * @return An authorized Credential object.
     * @throws IOException If the credentials.json file cannot be found.
    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        // Load client secrets.
        InputStream in = DriveQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

        // Build flow and trigger user authorization request.
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
        return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");

    public static void main(String... args) throws IOException, GeneralSecurityException {
        // Build a new authorized API client service.
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        Drive service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))

        // Print the names and IDs for up to 10 files.
        FileList result = service.files().list()
                .setFields("nextPageToken, files(id, name)")
        List<File> files = result.getFiles();
        if (files == null || files.isEmpty()) {
            System.out.println("No files found.");
        } else {
            for (File file : files) {
                System.out.printf("%s (%s)\n", file.getName(), file.getId());
        //Download the file from it's known ID
        FileOutputStream fos = new FileOutputStream(OUTPUT);
        service.files().export(fileId, "text/plain").executeMediaAndDownloadTo(fos);
        //Append some data to the file
        FileWriter fw = new FileWriter(OUTPUT, true);
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write("Goodbye, World!");

// [END drive_quickstart]
Append code to overwrite a PDF if a file of the same name already exists in the Google Drive folder

Append code to overwrite a PDF if a file of the same name already exists in the Google Drive folder

By : user3237644
Date : March 29 2020, 07:55 AM
This might help you Problem
Overwriting existing File in a Folder by its name (presumably unique).
code :
//prepare new file and Squads folder;

var existing = folder.getFilesByName(fileName); //returns file iterator;
var hasFile = existing.hasNext(); //check if iterator isn't empty;
if(hasFile) {
  var duplicate = existing.next(); //access file;

  //delete file;
  var durl = 'https://www.googleapis.com/drive/v3/files/'+duplicate.getId();
  var dres = UrlFetchApp.fetch(durl,{
    method: 'delete',
    muteHttpExceptions: true,
    headers: {'Authorization': 'Bearer '+token}
  if(dres.getResponseCode()>=400) {
    //handle errors;

//continue: add file, remove from root, etc;
var params = {
  format: 'pdf',
  size: 0,
  portrait: true,
  fitw: true,
  top_margin: 0,        
  bottom_margin: 0,        
  left_margin: 0,    
  right_margin: 0,   
  sheetnames: false,
  printtitle: false,
  pagenum: false,
  gridlines: false,
  fzr: 'FALSE',

//append params to the url;
var theurl = 'base?'+Object.keys(params).map(function(key){
  return key+'='+params[key];
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