Google Drive for Unity3D

Introduction

Google Drive for Unity3D plugin.

You can upload files, explore, download on the Google Drive storage.

This plugin supports PC(Windows and Mac), Android and iOS.

• Google Drive supports 'App Data' that is only accessible by your application. See https://developers.google.com/drive/appdata

Installation

Step 1: Enable the Google Drive API

• PC and iOS: https://developers.google.com/drive/v3/web/quickstart/ios (Step 1)

• Android: https://developers.google.com/drive/v3/web/quickstart/android (Step 1, 2)

Step 2: Type Your Client ID and Secret to DriveTest.cs.

In the line 40:

 drive.ClientID = "YOUR CLIENT ID";
 drive.ClientSecret = "YOUR CLIENT SECRET";

• PC and iOS can use same Client ID and secret.

• Android doesn't need Client ID and secret.

Step 3: Run the Sample Scene 'DriveTest'.

All done!

Demo Download

• Windows Binary: unitydrivetest_win.zip

• Android APK: unitydrivetest.apk

Sample Code

 var drive = new GoogleDrive();
 drive.ClientID = "YOUR CLIENT ID";
 drive.ClientSecret = "YOUR CLIENT SECRET";
 
 // Request authorization.
 var authorization = drive.Authorize();
 yield return StartCoroutine(authorization);
 
 if (authorization.Current is Exception)
 {
    Debug.LogWarning(authorization.Current as Exception);
    yield break;
 }
 
 // Authorization succeeded.
 Debug.Log("User Account: " + drive.UserAccount);
 
 // Upload a text file.
 var bytes = Encoding.UTF8.GetBytes("world!");
 yield return StartCoroutine(drive.UploadFile("hello.txt", "text/plain", bytes));
 
 // Get all files.
 var listFiles = drive.ListAllFiles();
 yield return StartCoroutine(listFiles);
 
 var files = GoogleDrive.GetResult<List<GoogleDrive.File>>(listFiles);
 if (files != null)
 {
    foreach (var file in files)
    {
        // Download a text file and print.
        if (file.Title.EndsWith(".txt"))
        {
            var download = drive.DownloadFile(file);
            yield return StartCoroutine(download);
            
            var data = GoogleDrive.GetResult<byte[]>(download);
            Debug.Log(System.Text.Encoding.UTF8.GetString(data));
        }
    }
 }

Work with 'App Data'.

 // Upload score in 'AppData'.
 int score = 10000;
 var bytes = Encoding.UTF8.GetBytes(score.ToString());
 
 // User cannot see 'score.txt'. Only your app can see this file.
 StartCoroutine(drive.UploadFile("score.txt", "text/plain", drive.AppData, bytes));