Develop Reference

How to specify Google Drive API spaces using CloudRail

I am writing an Android App to access Google Drive Photos via CloudRail service. I am able to authenticate to the Google account in question and see all my files/folders in the Google Drive, but I can't access photos from Google Photos.
While browsing through the Drive API documentation, it makes a reference to spaces, specifically 3 spaces are defined: drive, photos and allDataFolder.
Where do I specify the spaces that I am interested in? But default, the drive space is being accessed. Even though, I specifically specified scope for photos:
https://www.googleapis.com/auth/drive.photos.readonly
And when Google Authentication pages opens in the mobile browser, it states that my app wants to gain access to the user's Google Photos and I grant this access. But when calling CloudRail service to get children, no photos are visible
`googledriveChildren = mGoogledriveService.getChildren("/"); // returns goole drive top level files/folders
`googledriveChildren = mGoogledriveService.getChildren("/photos"); // generates a NotFoundException

I have already been down this path and achieved the integration - with the help/guidance from the folks at Cloudrail. You should note that my integration is limited to reading/downloading from Google Photos. I have not found any way to write/upload. Nor have I found any way of reading the album structure that can be set up in Google Photos.
First, you need to include the scope for Google Photos. I did this as follows:
public static final String GOOGLE_PHOTOS_SCOPE = "https://www.googleapis.com/auth/drive.photos.readonly";
private final AtomicReference<CloudStorage> googlephotos = new AtomicReference<>();
List<String> scope = new ArrayList<>();
scope.add(My_Constants.GOOGLE_PHOTOS_SCOPE);
googlephotos.set(new GoogleDrive(context, google_client_id, "", Get.GetString(R.string.google_redirect_uri),
Get.GetString(R.string.google_authentication_state), scope));
((GoogleDrive) googlephotos.get()).useAdvancedAuthentication();
You then need to build a Cloudrail advancedRequest to download whatever data you want. I download the metadata I require as follows:
CloudStrorage service = googlephotos.get();
private void searchForGooglePhotos(final CloudStorage service) throws Throwable {
GoogleDrive google_drive = (GoogleDrive) service;
boolean more = true;
String pageToken = null;
while (more) {
StringBuilder builder = new StringBuilder();
String query = URLEncoder.encode("mimeType='image/jpeg' and trashed = false", "utf-8");
builder.append("/files?spaces=photos");
if (pageToken != null) {
builder.append("&pageToken=");
builder.append(pageToken);
}
builder.append("&q=");
builder.append(query);
builder.append("&fields=nextPageToken,files(id,name,modifiedTime,description,size," +
"imageMediaMetadata(height,rotation,width,time))");
AdvancedRequestSpecification specification = new AdvancedRequestSpecification(builder.toString());
AdvancedRequestResponse response = google_drive.advancedRequest(specification);
#SuppressWarnings("unchecked")
Map<String, Object> resultObjectMap = (Map<String, Object>) response.getBodyJsonParsed();
pageToken = (String) resultObjectMap.get("nextPageToken");
#SuppressWarnings("unchecked")
ArrayList<Map<String, Object>> filesObjectMap = ((ArrayList<Map<String, Object>>) resultObjectMap.get("files"));
for (Map<String, Object> fileObjectMap : filesObjectMap) {
// process downloaded files
}
more = (pageToken != null);
}
}
Subsequently in my app I use Glide to download the photos themselves when required. In the Glide DataFetcher I obtain the inputStream using:
if (model.getSourceRecord().isTypeGooglePhotos()) {
AdvancedRequestSpecification specification;
AdvancedRequestResponse response;
if (model.getIsThumbnail()) {
specification = new AdvancedRequestSpecification("/files" + model.getSourceId() +
"?spaces=photos&fields=thumbnailLink");
response = ((GoogleDrive) service).advancedRequest(specification);
#SuppressWarnings("unchecked")
Map<String, Object> parsed = (Map<String, Object>) response.getBodyJsonParsed();
String link = (String) parsed.get("thumbnailLink");
specification = new AdvancedRequestSpecification(link);
specification.disableBaseUrl();
} else {
specification = new AdvancedRequestSpecification("/files" + model.getSourceId() + "?spaces=photos&alt=media");
}
response = ((GoogleDrive) service).advancedRequest(specification);
input_stream = response.getBodyAsStream();
} else {
if (model.getIsThumbnail()) {
input_stream = service.getThumbnail(model.getSourceId());
} else {
input_stream = service.download(model.getSourceId());
}
}
Here, "model" contains various info associated with each photo. The sourceId comes from the "id" downloaded:
String source_id = java.io.File.separator + fileObjectMap.get("id");
I hope this helps.

Would anyone arriving at this question / response please note that, as of mid Jan 2018, Google have "sunset" (sic) the photos space (spaces=photos above). This means that the above solution no longer works.
On the Google REST API documentation: "The photos space will sunset in early January 2018. Your users can continue to access Google Photos via the drive space by enabling the Google Photos folder in My Drive in the Drive client settings"
Ugh!

Google Drive REST API : file.getCreatedTime() returns always null

I am working with Android Quickstart for Google Drive Rest APi provided at the below link. Android Quickstart
The sample code works fine as is. However when I try to get other details from files like getCreatedTime() or GetWevViewLink() 'null' is returned. Only getName() and getId() returns values.

Google Drive REST APIs v3 would only return only certain default fields. If you need some field, you have to explicitly request it by setting it with .setFields() method.
Modify your code like this -
private List<String> getDataFromApi() throws IOException {
// Get a list of up to 10 files.
List<String> fileInfo = new ArrayList<String>();
FileList result = mService.files().list()
.setPageSize(10)
// see createdTime added to list of requested fields
.setFields("nextPageToken, files(createdTime,id,name)")
.execute();
List<File> files = result.getFiles();
if (files != null) {
for (File file : files) {
fileInfo.add(String.format("%s (%s)\n",
file.getName(), file.getId()));
}
}
return fileInfo;
}
You can read more about this behavior here https://developers.google.com/drive/v3/web/migration
Updated link https://developers.google.com/drive/api/v2/migration
Quoting from the above link -
Notable changes
Full resources are no longer returned by default. Use the fields query parameter to request specific fields to be returned. If left unspecified only a subset of commonly used fields are returned.
Accept the answer if it works for you so that others facing this issue might also get benefited.

I think you need to use the Metadata class to be able to use the getCreatedDate as indicated in Working with File and Folder Metadata.
Then try something like:
ResultCallback<MetadataResult> metadataRetrievedCallback = new
ResultCallback<MetadataResult>() {
#Override
public void onResult(MetadataResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Problem while trying to fetch metadata");
return;
}
//show the date when file was created
Metadata metadata = result.getMetadata();
showMessage("File was created on " + metadata.getCreatedDate() );
}
}

Create spreadsheet using data from local db

I want to create a spreadsheet using the data stored in the local db. I have 5 columns and data in them. I want to create a spreadsheet having the same columns and data. I have tried using sheets api but I do not understand how to create one taking data from db
This is my code for fetching data from spreadsheet
private List<String> getDataFromApi() throws IOException {
String sheetId = "1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms";
String range = "Class Data!A2:E";
List<String> results = new ArrayList<String>();
ValueRange response = this.mService.spreadsheets().values()
.get(sheetId, range)
.execute();
List<List<Object>> values = response.getValues();
if (values != null) {
results.add("Name, Major");
for (List row : values) {
results.add(row.get(0) + ", " + row.get(4));
}
}
return results;
}
This is my sheet
https://docs.google.com/spreadsheets/d/1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms/edit
I did some research and found out that we can edit a spreadsheet using drive api but I am not able to find out how. I have implemented drive api and can create and edit files though
Please help

You need to use Google Sheets API, the Google Sheets API v3 (formerly called the Google Spreadsheets API) lets you develop client applications that read and modify worksheets and data in Google Sheets. To fulfill the equivalent functionality of original Sheets+Docs combination, you should use Drive API to perform file manipulations such as search/move/creation/deletion.
In addition to the scopes for Drive API, add the following scope to your grant:
https://spreadsheets.google.com/feeds
If you're using GData client library and Google OAuth client library, it will be quite easy to setup both services after OAuth 2.0 authorization.
// Acquire clientId, clientSecret and refreshToken
...
// Create shared credential
GoogleCredential credential = new GoogleCredential.Builder()
.setClientSecrets(clientId, clientSecret)
.setJsonFactory(jsonFactory)
.setTransport(transport)
.build().setRefreshToken(refreshToken);
// Setup both servives
Drive driveService = new Drive.Builder(transport, jsonFactory, credential).build();
SpreadsheetService sheetService = new SpreadsheetService(...);
sheetService.setOAuth2Credentials(credential); // only provided in newer releases
sheetService.useSsl();
Resource IDs in both APIs are identical, so you can search id of some file with Drive API methods and access worksheets in the file with Sheets API methods.
File file = driveService.files().get().setFields(...).execute();
String feedUrl = "https://spreadsheets.google.com/feeds/worksheets/"
+ file.getId + "/private/full";
WorksheetFeed feed = sheetService.getFeed(feedUrl, WorksheetFeed.class);

Using Google Cloud Storage JSON api in android

I want to upload image on Google Cloud Storage from my android app. For that I searched and found that GCS JSON Api provides this feature. I did a lot of research for Android sample which demonstrates its use. On the developer site they have provided code example that only support java. I don't know how to use that API in Android. I referred this and this links but couldn't get much idea. Please guide me on how i can use this api with android app.

Ok guys so I solved it and got my images being uploaded in Cloud Storage all good.
This is how:
Note: I used the XML API it is pretty much the same.
First, you will need to download a lot of libraries.
The easiest way to do this is create a maven project and let it download all the dependencies required. From this sample project :
Sample Project
The libraries should be:
Second, you must be familiar with Cloud Storage using the api console
You must create a project, create a bucket, give the bucket permissions, etc.
You can find more details about that here
Third, once you have all those things ready it is time to start coding.
Lets say we want to upload an image:
Cloud storage works with OAuth, that means you must be an authenticated user to use the API. For that the best way is to authorize using Service Accounts. Dont worry about it, the only thing you need to do is in the API console get a service account like this:
We will use this service account on our code.
Fourth, lets write some code, lets say upload an image to cloud storage.
For this code to work you must put your key generated in step 3 in assets folder, i named it "key.p12".
I don't recommend you to do this on your production version, since you will be giving out your key.
try{
httpTransport= new com.google.api.client.http.javanet.NetHttpTransport();
//agarro la key y la convierto en un file
AssetManager am = context.getAssets();
InputStream inputStream = am.open("key.p12"); //you should not put the key in assets in prod version.
//convert key into class File. from inputstream to file. in an aux class.
File file = UserProfileImageUploadHelper.createFileFromInputStream(inputStream,context);
//Google Credentianls
GoogleCredential credential = new GoogleCredential.Builder().setTransport(httpTransport)
.setJsonFactory(JSON_FACTORY)
.setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
.setServiceAccountScopes(Collections.singleton(STORAGE_SCOPE))
.setServiceAccountPrivateKeyFromP12File(file)
.build();
String URI = "https://storage.googleapis.com/" + BUCKET_NAME+"/"+imagename+".jpg";
HttpRequestFactory requestFactory = httpTransport.createRequestFactory(credential);
GenericUrl url = new GenericUrl(URI);
//byte array holds the data, in this case the image i want to upload in bytes.
HttpContent contentsend = new ByteArrayContent("image/jpeg", byteArray );
HttpRequest putRequest = requestFactory.buildPutRequest(url, contentsend);
com.google.api.client.http.HttpResponse response = putRequest.execute();
String content = response.parseAsString();
Log.d("debug", "response is:"+response.getStatusCode());
Log.d("debug", "response content is:"+content);} catch (Exception e) Log.d("debug", "Error in user profile image uploading", e);}
This will upload the image to your cloud bucket.
For more info on the api check this link Cloud XML API

Firstly, You should get the below information by registering your application in the GCP console.
private final String pkcsFile = "xxx.json";//private key file
private final String bucketName = "your_gcp_bucket_name";
private final String projectId = "your_gcp_project_id";
Once you get the credentials, you should put the private key (.p12 or .json) in your assets folder. I'm using JSON format private key file. Also, you should update the image location to upload.
#RequiresApi(api = Build.VERSION_CODES.O)
public void uploadImageFile(String srcFileName, String newName) {
Storage storage = getStorage();
File file = new File(srcFileName);//Your image loaction
byte[] fileContent;
try {
fileContent = Files.readAllBytes(file.toPath());
} catch (IOException e) {
e.printStackTrace();
return;
}
if (fileContent == null || fileContent.length == 0)
return;
BlobInfo.Builder newBuilder = Blob.newBuilder(BucketInfo.of(bucketName), newName);
BlobInfo blobInfo = newBuilder.setContentType("image/png").build();
Blob blob = storage.create(blobInfo, fileContent);
String bucket = blob.getBucket();
String contentType = blob.getContentType();
Log.e("TAG", "Upload File: " + contentType);
Log.e("File ", srcFileName + " uploaded to bucket " + bucket + " as " + newName);
}
private Storage getStorage() {
InputStream credentialsStream;
Credentials credentials;
try {
credentialsStream = mContext.getAssets().open(pkcsFile);
credentials = GoogleCredentials.fromStream(credentialsStream);
} catch (IOException e) {
e.printStackTrace();
return null;
}
return StorageOptions.newBuilder()
.setProjectId(projectId).setCredentials(credentials)
.build().getService();
}

Google Play Android Developer API from C#/.NET service - (400) Bad Request

I'm trying to access a Purchase Status API from my ASP.NET web server using Google APIs .NET Client Library which is a recommended way for using Purchase API v1.1. However, the Authorization page of this API suggests direct web requests to Google's OAuth2 pages instead of using the corresponding client libraries.
OK, I tried both methods with all variations I could imagine and both of them lead to "The remote server returned an error: (400) Bad Request.".
Now what I've done to get to my point. First I've made all steps 1-8 under the Creating an APIs Console project of the Authorization page. Next I generated a refresh token as described there. During refresh token generation I chose the same Google account as I used to publish my Android application (which is in published beta state now).
Next I've created a console C# application for test purposes in Visual Studio (may be console app is the problem?)
and tried to call the Purchase API using this code (found in some Google API examples):
private static void Main(string[] args)
{
var provider =
new WebServerClient(GoogleAuthenticationServer.Description)
{
ClientIdentifier = "91....751.apps.googleusercontent.com",
ClientSecret = "wRT0Kf_b....ow"
};
var auth = new OAuth2Authenticator<WebServerClient>(
provider, GetAuthorization);
var service = new AndroidPublisherService(
new BaseClientService.Initializer()
{
Authenticator = auth,
ApplicationName = APP_NAME
});
var request = service.Inapppurchases.Get(
PACKAGE_NAME, PRODUCT_ID, PURCHASE_TOKEN);
var purchaseState = request.Execute();
Console.WriteLine(JsonConvert.SerializeObject(purchaseState));
}
private static IAuthorizationState GetAuthorization(WebServerClient client)
{
IAuthorizationState state =
new AuthorizationState(
new[] {"https://www.googleapis.com/auth/androidpublisher"})
{
RefreshToken = "4/lWX1B3nU0_Ya....gAI"
};
// below is my redirect URI which I used to get a refresh token
// I tried with and without this statement
state.Callback = new Uri("https://XXXXX.com/oauth2callback/");
client.RefreshToken(state); // <-- Here we have (400) Bad request
return state;
}
Then I tried this code to get the access token (I found it here: Google Calendar API - Bad Request (400) Trying To Swap Code For Access Token):
public static string GetAccessToken()
{
var request = WebRequest.Create(
"https://accounts.google.com/o/oauth2/token");
request.Method = "POST";
var postData =
string.Format(
#"code={0}&client_id={1}&client_secret={2}&redirect_uri={3}&grant_type=authorization_code",
// refresh token I got from browser
// also tried with Url encoded value
// 4%2FlWX1B3nU0_Yax....gAI
"4/lWX1B3nU0_Yax....gAI",
// ClientID from Google APIs Console
"919....1.apps.googleusercontent.com",
// Client secret from Google APIs Console
"wRT0Kf_bE....w",
// redirect URI from Google APIs Console
// also tried Url encoded value
// https%3A%2F%2FXXXXX.com%2Foauth2callback%2F
"https://XXXXX.com/oauth2callback/");
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = byteArray.Length;
using (var dataStream = request.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
}
try
{
// request.GetResponse() --> (400) Bad request again!
using (var response = request.GetResponse())
{
using (var dataStream = response.GetResponseStream())
{
using (var reader = new StreamReader(dataStream))
{
var responseFromServer = reader.ReadToEnd();
var jsonResponse = JsonConvert.DeserializeObject<OAuth2Response>(responseFromServer);
return jsonResponse.access_token;
}
}
}
}
catch (Exception ex) { var x = ex; }
return null;
}
So, to sum up all my long story:
Is it possible at all to pass OAuth2 authorization using either of methods above from a C# Console Application (without user interaction)?
I've double checked the redirect URI (since I saw a lot of discussed troubles because of it here on stackoverflow) and other parameters like ClientID and ClientSecret. What else I could do wrong in the code above?
Do I need to URL encode a slash in the refresh token (I saw that the first method using client library does it)?
What is the recommended way of achieving my final goal (Purchase API access from ASP.NET web server)?

I'll try to answer your last question. If you access your own data account, you dont need to use client id in oAuth2. Let's use service account to access Google Play API.
Create a service account in Google Developer Console > Your project > APIs and auth > Credentials > Create a new key. You will download a p12 key.
Create a C# project. You can choose console application.
Install google play api library from Google.Apis.androidpublisher. Nuget. You can find other library for dotnet in Google APIs Client Library for .NET
Link google api project with your google play account in API access
Authenticate and try to query information. I'll try with listing all inapp item. You can just change to get purchase's status
String serviceAccountEmail = "your-mail-in-developer-console#developer.gserviceaccount.com";
var certificate = new X509Certificate2(#"physical-path-to-your-key\key.p12", "notasecret", X509KeyStorageFlags.Exportable);
ServiceAccountCredential credential = new ServiceAccountCredential(
new ServiceAccountCredential.Initializer(serviceAccountEmail)
{
Scopes = new[] { "https://www.googleapis.com/auth/androidpublisher" }
}.FromCertificate(certificate));
var service = new AndroidPublisherService(
new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = "GooglePlay API Sample",
});
// try catch this function because if you input wrong params ( wrong token) google will return error.
var request = service.Inappproducts.List("your-package-name");
var purchaseState = request.Execute();
// var request = service.Purchases.Products.Get(
//"your-package-name", "your-inapp-item-id", "purchase-token"); get purchase'status
Console.WriteLine(JsonConvert.SerializeObject(purchaseState));

You should do the following in your
private static IAuthorizationState GetAuthorization(WebServerClient client) method:
private IAuthorizationState GetAuthorization(WebServerClient client)
{
IAuthorizationState state = AuthState;
if (state != null)
{
return state;
}
state = new AuthorizationState()
{
RefreshToken = "4/lWX1B3nU0_Ya....gAI",
Callback = new Uri(#"https://XXXXX.com/oauth2callback/")
};
client.RefreshToken(state);
// Store and return the credentials.
HttpContext.Current.Session["AUTH_STATE"] = _state = state;
return state;
}
Let me know if it works for you.
Be aware that we know that the whole OAuth2 flow is awkward today, and we are working to improve it.