Integration of Google drive in Android Apps?

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I need to upload files to Google drive and see/download the files i had uploaded in my android application.How to do this in the simplest way..?Any suggestions ,sample codes,explanations to do this are welcomed. Thanking you in advance .

PS:WITHOUT INSTALLING GOOGLE DRIVE IN DEVICE..

The simplest way is to follow the Android quickstart guide for Drive

It explains how to build an Android application that uploads photos to Drive in less than 10 minutes.

Introduction to the Google Drive Android API, Read, write, and sync files stored in Google Drive from your Android app. Google Drive Integration Details Connect your Google Drive to other popular apps like Gmail, Dropbox, OneDrive, Facebook Lead Ads, Slack and many more to automate the tedious tasks in your workflow. We offer features that allow you to connect your Google Drive directly to the apps of your choice in minutes. No coding skills required.

Refer this, Complete Step by Step Guide

Code for Uploading Only (I am still figuring out how to browse files):

package com.example.drivequickstart;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import android.accounts.AccountManager;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.widget.Toast;

import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException;
import com.google.api.client.http.FileContent;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;

public class MainActivity extends Activity {
    static final int REQUEST_ACCOUNT_PICKER = 1;
    static final int REQUEST_AUTHORIZATION = 2;
    static final int CAPTURE_IMAGE = 3;

    private static Uri fileUri;
    private static Drive service;
    private GoogleAccountCredential credential;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        credential = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE);
        startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
    }

    @Override
    protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
        switch (requestCode) {
        case REQUEST_ACCOUNT_PICKER:
            if (resultCode == RESULT_OK && data != null && data.getExtras() != null) {
                String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
                if (accountName != null) {
                    credential.setSelectedAccountName(accountName);
                    service = getDriveService(credential);
                    startCameraIntent();
                }
            }
            break;
        case REQUEST_AUTHORIZATION:
            if (resultCode == Activity.RESULT_OK) {
                saveFileToDrive();
            } else {
                startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
            }
            break;
        case CAPTURE_IMAGE:
            if (resultCode == Activity.RESULT_OK) {
                saveFileToDrive();
            }
        }
    }

    private void startCameraIntent() {
        String mediaStorageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath();
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
        fileUri = Uri.fromFile(new java.io.File(mediaStorageDir + java.io.File.separator + "IMG_" + timeStamp + ".jpg"));

        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
        startActivityForResult(cameraIntent, CAPTURE_IMAGE);
    }

    private void saveFileToDrive() {
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    // File's binary content
                    java.io.File fileContent = new java.io.File(fileUri.getPath());
                    FileContent mediaContent = new FileContent("image/jpeg", fileContent);

                    // File's metadata.
                    File body = new File();
                    body.setTitle(fileContent.getName());
                    body.setMimeType("image/jpeg");

                    File file = service.files().insert(body, mediaContent).execute();
                    if (file != null) {
                        showToast("Photo uploaded: " + file.getTitle());
                        startCameraIntent();
                    }
                } catch (UserRecoverableAuthIOException e) {
                    startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
        t.start();
    }

    private Drive getDriveService(GoogleAccountCredential credential) {
        return new Drive.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential).build();
    }

    public void showToast(final String toast) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(getApplicationContext(), toast, Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Drive API for Android (Deprecated), The simplest way is to follow the Android quickstart guide for Drive. It explains how to build an Android application that uploads photos to Drive� Moving to Google Drive Rest API. In the Rest API documents, you will found examples in JAVA but it seems not quite straightforward to integrate with Android. The first thing is the authorization process. Previously on Android, you can request the login dialog attached with G Drive permission and then you can start to access file and folder in the G Drive.

The Google drive is accessible through the Google Drive API, the sample demo is created by the android folks at the below path which is very helpful and provides a sample of all the capabilities. please follow the below link Git hub demo for Google Drive API

Integration of Google drive in Android Apps?, During this session we'll show how to use the Drive SDK and Intents to open supported file Duration: 19:35 Posted: Feb 1, 2013 Google wants more developers to integrate their Android apps with its storage service Drive, and has released a new API that aims to make it easier. While Drive integration on Android was possible in the past, the new API offers developers better performance and more features, Google developer advocate Magnus Hyttsten said in a blog post on

Google has deprecated Google Drive API for Android. So we have to use REST API.

Use this answer and check if it useful.

https://stackoverflow.com/a/59063198/9538854

Google Drive SDK: Integrating your app with the Android Drive app , In this tutorial, you will create an app that will authenticate a user with Google, launch Google Drive, and then allow a user to choose a file. Once the user selects a file, the app will download and open it. The Google Drive SDK is used to connect to a user's Google Drive files. Google Drive Integration Details. Google Drive will keep all your files organized and up to date, and with Zapier, you can connect Google Drive to all your other apps. Send notifications, create and update documents, and share files without even opening Google Drive. Use Zapier to make Google Drive even more powerful by automatically managing your files—making sure they’re right where you need them, when you need them.

Integrating Google Drive in Android, In this Android app tutorial, we will learn how to auto-sync Google Drive API in users access and download the files from Google Drive to an Android app. How to Integrate Google Nearby API in Android App Using Retrofit� The Drive User Interface (UI) is a Google-provided application allowing Drive users to create, organize, discover, and share content stored on Google Drive. You can integrate your Drive-enabled app

Auto-sync Google Drive To Backup & Retrieve Files In Android , Google just announced that they already depreciated the Google Drive API for Android. If your apps use this APIs you may get the email about� Read, write, and sync files stored in Google Drive from your Android app.

Integrate Google Drive REST API on Android App, If you use the Google Drive Android API, you will need to migrate your existing applications to other services prior to December 6, 2019, when all� Google Drive is a safe place for all your files and puts them within reach from any smartphone, tablet, or computer. Files in Drive – like your videos, photos, and documents – are backed up safely so you can’t lose them. Once there, you can easily invite others to view, edit, or leave comments on any of your files or folders. With Drive, you can: - Safely store your files and access them