i am using this code to retrieve the list of files and folders on Android, this returns only one file :(
{
Query query = new Query.Builder().setPageToken(mNextPageToken).build();
Drive.DriveApi.query(getGoogleApiClient(), query).setResultCallback(
metadataBufferCallback);
}
private final ResultCallback<MetadataBufferResult> metadataBufferCallback = new ResultCallback<MetadataBufferResult>() {
#Override
public void onResult(MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Problem while retrieving files");
return;
}
mResultsAdapter.append(result.getMetadataBuffer());
mNextPageToken = result.getMetadataBuffer().getNextPageToken();
}
};
The Android API uses Drive.File scope, which gives your app access to the specific files created by it or explicitly opened with it by the user. The query will return the subset of files you have access to that match the query.
Related
I am trying to access all files and folders from google drive to a arraya list. But I can get only one file from Drive. What to do get all files and folders from google drive. I am using the following code..
Thanks
Arun
public void onConnected(Bundle connectionHint) {
// Log.i(TAG, "API client connected.");
Toast.makeText(getActivity(), "Successfully logged in", Toast.LENGTH_LONG).show();
DriveFolder s = Drive.DriveApi.getRootFolder(mGoogleApiClient);
String s1 = (Drive.DriveApi.getRootFolder(mGoogleApiClient)).getDriveId().toString();
DriveId sFolderId2 = DriveId.decodeFromString(s1);
DriveId sFolderId = (Drive.DriveApi.getRootFolder(mGoogleApiClient)).getDriveId();
DriveFolder folder = Drive.DriveApi.getFolder(mGoogleApiClient, sFolderId);
folder.listChildren(mGoogleApiClient).setResultCallback(rootFolderCallback);
// findAll(folder);
}
public ResultCallback<DriveApi.MetadataBufferResult> rootFolderCallback = new
ResultCallback<DriveApi.MetadataBufferResult>() {
#Override
public void onResult(DriveApi.MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
return;
}
resultarray = new ArrayList<String>();
int hh = result.getMetadataBuffer().getCount();
for (int i = 0; i < result.getMetadataBuffer().getCount(); i++) {
resultarray.add(result.getMetadataBuffer().get(i).getTitle());
}
Toast.makeText(getActivity(), "Successfully listed files.", Toast.LENGTH_LONG).show();
}
};
UPDATE (Aug 25, 2015, 10:39 MST)
Based on your comment below, you have 2 options:
1/ Stay with the GDAA, use one of the INTENTS:
- Pick a file with opener activity
- Pick a folder with opener activity
See, GDAA does not let your app see anything it did not create (SCOPE_FILE only), but it still allows user to browse everything. If the user selects a file, it will become visible to you app. I don't know your app's intentions, so I can't say if this approach is usable.
2/ Switch to the REST with the DRIVE scope and your app will see everything (user has to approve up front). The basic CRUD implementation can be found here but make sure you change the scope in the init() method to 'DriveScopes.DRIVE'.
In case your app needs to iterate down the folder tree, collecting files in the process, both 'testTree()' and 'deleteTree()' methods in the MainActivity() do exactly that.
You may also stay with the GDAA and add REST functionality to it by adding
com.google.api.services.drive.Drive mGOOSvc = new Drive.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(),
GoogleAccountCredential.usingOAuth2(appContext, Collections.singletonList(DriveScopes.DRIVE))
.setSelectedAccountName(email)
but you will sooner or later run into problems caused by GDAA caching / latency.
ORIGINAL ANSWER
Try this approach:
private static GoogleApiClient mGAC;
/****************************************************************************
* find file/folder in GOODrive
* #param prnId parent ID (optional), null searches full drive, "root" searches Drive root
* #param titl file/folder name (optional)
* #param mime file/folder mime type (optional)
* #return arraylist of found objects
*/
static void search(String prnId, String titl, String mime) {
if (mGAC != null && mGAC.isConnected()) {
// add query conditions, build query
ArrayList<Filter> fltrs = new ArrayList<>();
if (prnId != null){
fltrs.add(Filters.in(SearchableField.PARENTS,
prnId.equalsIgnoreCase("root") ?
Drive.DriveApi.getRootFolder(mGAC).getDriveId() : DriveId.decodeFromString(prnId)));
}
if (titl != null) fltrs.add(Filters.eq(SearchableField.TITLE, titl));
if (mime != null) fltrs.add(Filters.eq(SearchableField.MIME_TYPE, mime));
Query qry = new Query.Builder().addFilter(Filters.and(fltrs)).build();
// fire the query
Drive.DriveApi.query(mGAC, qry).setResultCallback(new ResultCallback<MetadataBufferResult>() {
#Override
public void onResult(MetadataBufferResult rslt) {
if (rslt != null && rslt.getStatus().isSuccess()) {
MetadataBuffer mdb = null;
try {
mdb = rslt.getMetadataBuffer();
if (mdb != null ) for (Metadata md : mdb) {
if (md == null || !md.isDataValid()) continue;
String title = md.getTitle();
DriveId driveId = md.getDriveId();
//.......
}
} finally { if (mdb != null) mdb.close(); }
}
}
});
}
}
Call it first with NULLs
search(null,null,null)
To list all the files in your Google Drive. You will see all the files your Android App created. But only those - FILE scope does not see anything else.
If you need to scan the directory tree, you may look closer at this GDAA demo, in MainActivity, there is are 'testTree()' / 'deleteTree() methods that recursively scan the directory tree structure.
Also, you may look at the answer here, it deals with a similar issue (especially the comments exchange under the answer).
Good Luck
Please note that you can use GDAA to retrieve the files and folder that you have either uploaded from the Android Device or downloaded via the drive app. This is to have more security (as quoted by Google).
In he code you need to ensure that you are trying all possible combinations for the files that may be present in your Google Drive account. For example, check if you are tracking the parent of a file or a folder. If this condition is not met your app wont be able to retrieve those specific files.
/** Get the list of parents Id in ascending order. */
private List<String> collectParents(String folderId, Map<String, String> folderIdToParentId){
String parentId = folderIdToParentId.get(folderId);
if (logger.isTraceEnabled()){
logger.trace("Direct parent of {} is {}", folderId, parentId);
}
List<String> ancestors = new ArrayList<String>();
ancestors.add(parentId);
if (folderIdToParentId.containsKey(parentId)){
ancestors.addAll(collectParents(parentId, folderIdToParentId));
return ancestors;
}
return ancestors;
}
See the full code here.
I want to pass access token for get the list of files from google drive.
What I have done :
Register app to Google dev console.
I have client id based on OAuth 2.0
What i want to do :
Call HttpCall for https://www.googleapis.com/drive/v2/files
I want to set access token in header like this :
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost post = new HttpPost("https://www.googleapis.com/drive/v2/files");
post.addHeader("Content-Type", "application/json");
post.addHeader("Authorization","Bearer XXXXXXXXXXXXXXXXXXXXXXXXX");
How can I get access token for Authorization by using OAuth2.0 Client Id
You should look at the Drive for Android documentation.
That makes the whole job a hell lot simpler. For example
Create a file:
#Override
public void onConnected(Bundle connectionHint) {
super.onConnected(connectionHint);
IntentSender intentSender = Drive.DriveApi
.newOpenFileActivityBuilder()
.setMimeType(new String[] { "text/plain", "text/html" })
.build(getGoogleApiClient());
try {
startIntentSenderForResult(
intentSender, REQUEST_CODE_OPENER, null, 0, 0, 0);
} catch (SendIntentException e) {
Log.w(TAG, "Unable to send intent", e);
}
}
List files in a folder
To list all the files in a folder
/**
* An activity that illustrates how to list files in a folder.
*/
public class ListFilesInFolderActivity extends BaseDemoActivity implements
ResultCallback {
private static DriveId sFolderId = DriveId.decodeFromString("DriveId:0B2EEtIjPUdX6MERsWlYxN3J6RU0");
private ListView mResultsListView;
private ResultsAdapter mResultsAdapter;
#Override
public void onConnected(Bundle connectionHint) {
super.onCreate(connectionHint);
setContentView(R.layout.activity_listfiles);
mResultsListView = (ListView) findViewById(R.id.listViewResults);
mResultsAdapter = new ResultsAdapter(this);
mResultsListView.setAdapter(mResultsAdapter);
DriveFolder folder = Drive.DriveApi.getFolder(getGoogleApiClient(), sFolderId);
folder.listChildren(getGoogleApiClient()).setResultCallback(childrenRetrievedCallback);
}
ResultCallback<MetadataBufferResult> childrenRetrievedCallback = new
ResultCallback<MetadataBufferResult>() {
#Override
public void onResult(MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Problem while retrieving files");
return;
}
mResultsAdapter.clear();
mResultsAdapter.append(result.getMetadataBuffer());
showMessage("Successfully listed files.");
}
}
}
Query for a file
To query for a file say "HelloWorld.java":
Query query = new Query.Builder()
.addFilter(Filters.eq(SearchableField.TITLE, "HelloWorld.java"))
.build();
Drive.DriveApi.query(googleApiClient, query);
For more details on querying please look at this part of documentation.
If you are making calls with scopes that are available in GDAA then that would be your best bet.
Otherwise you could use the Google Drive Java client library. In this instance you can use the GoogleAccountCredential for Auth, which will contain the access token, however you will not need to use it directly. See an example here.
I'm trying to develop an android app that can read a xml file stored in my google drive folder, the idea at first is trying to open the file and handle the content.
I've read the Google Drive API docs for android and i reached a point that I'm lost, it's working with file contents.
According to this guide the way to open a file from drive is this:
DriveFile file = ...
file.open(mGoogleApiClient, DriveFile.MODE_READ_ONLY, null).setResultCallback(contentsOpenedCallback);`
Searching I realized that the complete code (that they not include there is):
DriveFile file = Drive.DriveApi.getFile(mGoogleApiClient,DriveId.bg(id));
file.open(mGoogleApiClient, DriveFile.MODE_READ_ONLY, null).setResultCallback(contentsOpenedCallback);`
Well the problem there is that I don't know the file "id". I've tried the id from the web link of google drive, something like this (https://drive.google.com/open?id=1EafJ-T6H4xI9VaUuUO5FMVb9Y30xyr7OHuISQ53avso&authuser=0) but didn´t work.
You could use the DriveAPI Query method, to retrieve any information about an specific file. you will need to define a query object as the following:
Query query = new Query.Builder()
.addFilter(Filters.eq(SearchableField.TITLE, "HelloWorld.java"))
.build();
And set a callback function to iterate on the results:
Drive.DriveApi.query(googleApiClient, query)
.setResultCallback(new OnChildrenRetrievedCallback() {
#Override
public void onChildrenRetrieved(MetadataBufferResult result) {
// Iterate over the matching Metadata instances in mdResultSet
}
});
You can find more information on the topic here: https://developers.google.com/drive/android/queries
The solution i found for this problem was creating the file from the app. Using the class ("CreateFileActivity.java") from google drive api demo app.
With this class i save the returning Driveid from the new file in a global DriveId variable.
final private ResultCallback<DriveFolder.DriveFileResult> fileCallback = new
ResultCallback<DriveFolder.DriveFileResult>() {
#Override
public void onResult(DriveFolder.DriveFileResult result) {
if (!result.getStatus().isSuccess()) {
Log.e("","Error while trying to create the file");
return;
}
Id=result.getDriveFile().getDriveId();
Log.e("","Created a file with content: " + Id);
}
};
Then with this id in another method i call the file and read it (If i want i can edit this file information from Google Drive Web App):
public void leer(){
DriveFile file = Drive.DriveApi.getFile(getGoogleApiClient(),Id);
file.open(mGoogleApiClient, DriveFile.MODE_READ_ONLY, null)
.setResultCallback(contentsOpenedCallback);
}
ResultCallback<DriveApi.DriveContentsResult> contentsOpenedCallback =
new ResultCallback<DriveApi.DriveContentsResult>() {
#Override
public void onResult(DriveApi.DriveContentsResult result) {
if (!result.getStatus().isSuccess()) {
Log.e("Error:","No se puede abrir el archivo o no se encuentra");
return;
}
// DriveContents object contains pointers
// to the actual byte stream
DriveContents contents = result.getDriveContents();
BufferedReader reader = new BufferedReader(new InputStreamReader(contents.getInputStream()));
StringBuilder builder = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
builder.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
String contentsAsString = builder.toString();
Log.e("RESULT:",contentsAsString);
}
};
I've been playing with this stuff a few months back, and still have some code on GitHub. It may be VERY outdated (libver 15 or so), but it may serve as a reference point, and it is simple. Look here. Pull it down, plug in, step through. Fix what's not working anymore :-). I've abandoned it some time ago.
Be aware of the fact that there are 2 different IDs for Google Drive Android API objects, see SO 22841237.
In general, you usually start with knowing the file/folder name, query GDAA to get a list of objects. Each of them will yield DriveID and ResourceID. DriveID is used in your app to manipulate the objects (does not mean anything outside your Android App and/or device). ResourceID is the string that appears in different forms in URLs and can be used outside your app (web browser for instance...). Look at this wrapper to get some feeling how it works. But again, it's been a few versions back, so there are no guaranties.
The Google Drive API is deprecated, now its Google Drive V3 and for Query we use
String pageToken = null;
do {
FileList result = driveService.files().list()
.setQ("mimeType='image/jpeg'")
.setSpaces("drive")
.setFields("nextPageToken, files(id, name)")
.setPageToken(pageToken)
.execute();
for (File file : result.getFiles()) {
System.out.printf("Found file: %s (%s)\n",
file.getName(), file.getId());
}
pageToken = result.getNextPageToken();
}
while (pageToken != null);
You can Learn more here Officals Docs
I'm building application using Google Drive api. But app folder not working after uninstalling the app. Here is what I been trying to do:
public searchFiles(){
GoogleApiClient googleApiClient = getGoogleApiClient();
Drive.DriveApi.getAppFolder(googleApiClient).listChildren(googleApiClient)
.setResultCallback(metadataBufferCallback);
}
private final ResultCallback<DriveApi.MetadataBufferResult> metadataBufferCallback = new
ResultCallback<DriveApi.MetadataBufferResult>() {
#Override
public void onResult(DriveApi.MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
// Error
return;
}
MetadataBuffer metadataBuffer = result.getMetadataBuffer();
DriveId driveId = null;
if(metadataBuffer.getCount() > 0){
Metadata metadata = metadataBuffer.get(0);
driveId = metadata.getDriveId();
}
metadataBuffer.close();
if(driveId != null){
// success
}
else{
// omg, why?
}
}
};
I am not working with filters just yet, I got only got one file there. If I replace getAppFolder with getRootFolder it works just fine.
Also it works when it's cached, but once I uninstall the application metadataBuffer.getCount() is always return 0, even so in drive it says that I have 23 bytes of hidden data.
What am I missing here?
*I asked the user for SCOPE_APPFOLDER in the permissions. And I am running a signed version of the app.
I have been closely following the documentation for the Google Drive Android API and, all works great. I can create new text documents and read them back in using the mime type of text/plain.
What I cannot do is create a native Google "Document" or "Spreadsheet." Actually, I can create them by using the mime type to application/vnd.google-apps.document or application/vnd.google-apps.spreadsheet as per Supported MIME Types documentation.
If, however, I try to write content to these documents, the documents never get uploaded.
If I try to read documents that have content (content I created via a web browser) my openContents call fails.
Again, I can create text/plain documents and write to them, but they are not native Google Documents. I have scowered the documentation and sample files, but nothing describes what I'm looking for.
This seems so basic. Does the new GoogleApiClient not support doing this? What am I missing or doing wrong?
Here is the core code for creating. I have a similar issue when trying to read a application/vnd.google-apps.document but I'm sure the two issues are related. I'll spare the verbosity of "read" code.
private void exportToGDriveFile() {
Drive.DriveApi.newContents(getGoogleApiClient()).setResultCallback(createNewFileCallback);
}
final private ResultCallback<ContentsResult> createNewFileCallback = new ResultCallback<ContentsResult>() {
#Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
writeLog("Error while trying to create new file contents");
return;
}
String fileName = getIncrementedFileName();
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle(fileName)
.setMimeType("text/plain") // <-- This works! I can write and read back :)
//.setMimeType("application/vnd.google-apps.document") <-- can create if no contents are included.
//.setMimeType("application/vnd.google-apps.spreadsheet")
.setStarred(true)
.build();
writeLog("creating file: " + fileName);
// create a file on root folder
Drive.DriveApi.getRootFolder(getGoogleApiClient())
.createFile(getGoogleApiClient(), changeSet, result.getContents())
.setResultCallback(afterCreateFileCallback);
}
};
private ResultCallback<DriveFileResult> afterCreateFileCallback = new ResultCallback<DriveFileResult>() {
#Override
public void onResult(DriveFileResult result) {
if (!result.getStatus().isSuccess()) {
writeLog("Error while trying to create the file");
return;
}
DriveFile driveFile = result.getDriveFile();
writeLog("Created file " + driveFile.getDriveId());
new WriteFileAsyncTask().execute(driveFile);
}
};
private class WriteFileAsyncTask extends AsyncTask<DriveFile, Void, Boolean> {
#Override
protected Boolean doInBackground(DriveFile... args) {
DriveFile file = args[0];
try {
ContentsResult contentsResult = file.openContents(getGoogleApiClient(), DriveFile.MODE_WRITE_ONLY, null).await();
if (!contentsResult.getStatus().isSuccess()) {
return false;
}
/************************
If I try to write content here, `application/vnd.google-apps.document` files will not upload.
*************************/
String contents = "Hello World";
OutputStream outputStream = contentsResult.getContents().getOutputStream();
outputStream.write(contents.getBytes());
com.google.android.gms.common.api.Status status = file.commitAndCloseContents(
getGoogleApiClient(), contentsResult.getContents()).await();
return status.getStatus().isSuccess();
} catch (IOException e) {
// toast("IOException while appending to the output stream");
}
return false;
}
#Override
protected void onPostExecute(Boolean result) {
if (!result) {
// toast("Error while editing contents");
return;
}
// toast("Successfully uploaded Quizifications!");
}
}
It's not currently possible to read or edit the contents of Google Documents, Spreadsheets or Presentation files. They files are of a special type that don't have standard binary content, so you can't read and write from them in the same way you can from other files.
You can, however, interact with the metadata of existing files.
Sorry for the confusion, we should update the behavior so that its clear that its not possible.
Updating Google Docs with HTML is simple. Just make an api request with html-formatted text in the body (html tag is required) and content-type to be google docs, then your created/updated file will be available to the user as a Google Doc with all the formatting options.
request({
uri: 'https://www.googleapis.com/upload/drive/v2/files/'+fileId,
method: 'PUT',
qs: {
uploadType: 'media'
},
form: '<html> Hello <b>World!</b> </html>',
headers: {
'Content-Type': 'application/vnd.google-apps.document',
'Authorization': 'Bearer ' + access_token
}}, function (error, response, body){
})