Develop Reference

How can I attach an image to a "Direct Message" in twitter Android?

I programmed an app that can send a message to twitter with an image attached. It works! I tested it on several devices and asked other people to do the same. It even works for a Direct Message when a twitter friend is selected. However, it does not work when "Direct Message" is selected. This forces the user to select a friend directly instead of selecting him via "Direct Message" (which is really strange) otherwise the picture is not attached. Just have a look at the screenshot:
Here is my Xamarin Android programming code. Let me know how to fix it. Currently, all options work, even selecting my friend but not "Direct Message". I also need to tell that I do not have any issue with the twitter text I expect to see in the tweet.
public bool TweetImage(Bitmap imageToTweet)
{
var messageIntent = context.FindMessageIntent(this.twitterConstants.PackageName);
if (messageIntent == null)
{
return false;
}
string outputFileBMP = SaveBitmap(imageToTweet);
context.Tweet(messageIntent, outputFileBMP, this.twitterConstants.DefaultTwitterText, this.twitterConstants.ChooserMessage);
return true;
}
and
public static Intent FindMessageIntent(this ContextWrapper contextWrapper, params string[] packageNames)
{
Intent wantedIntent = new Intent();
wantedIntent.SetType("text/plain");
var resolveInfos = contextWrapper.PackageManager.QueryIntentActivities(wantedIntent, PackageInfoFlags.MatchDefaultOnly);
var result = (from r in resolveInfos
from p in packageNames
where p == r.ActivityInfo.PackageName
select p).FirstOrDefault();
if (result != null)
{
wantedIntent.SetPackage(result);
return wantedIntent;
}
return null;
}
and
public static void Tweet(this ContextWrapper contextWrapper, Intent messageIntent, string filePath = null, string message = null, string chooserMessage = null)
{
if (filePath != null)
{
using (var file = new Java.IO.File(filePath))
{
messageIntent.PutExtra(Intent.ExtraStream, Android.Net.Uri.FromFile(file));
}
}
if (message != null)
{
messageIntent.PutExtra(Intent.ExtraText, message);
}
if (chooserMessage != null)
{
using (var chooser = Intent.CreateChooser(messageIntent, chooserMessage))
{
contextWrapper.StartActivity(chooser);
}
return;
}
contextWrapper.StartActivity(messageIntent);
}
Please note that I am using Android and need a solution based on Android (intent based).

Sadly, Twitter don't provide API access for uploading images via DM.
If you are able to use Twitter's private API, you should be able to attach a media_id to your DM. But other than that, you're out of luck.
Sorry.

How to verify facebook id_token received by android app on server side with php and get user profile

To login with facebook on my android app I request the public_profile and email of the user:
LoginManager.getInstance().logInWithReadPermissions(LoginFragment.this,
Arrays.asList("public_profile", "email"));
Then I send the id_token Profile.getCurrentProfile().getId() to the backend server.
On server side I try to verify the token as follows:
$id_token = $_POST['idToken'];
$app_access_token = FB_APP_ID . "|" . FB_APP_SECRET;
$fb = new \Facebook\Facebook(['app_id' => FB_APP_ID,
'app_secret' => FB_APP_SECRET,
'default_graph_version' => 'v2.8',
'default_access_token' => $app_access_token]);
$response = $fb->get('/debug_token?input_token=' . $id_token, $app_access_token);
But $response just contains an empty json {}.
UPDATE 1:
With
$oauth = $fb->getOAuth2Client();
$meta = $oauth->debugToken($app_access_token);
I eventually managed to validate the id_token. $meta contains then:
["metadata":protected]=>
array(4) {
["app_id"]=>string(16) "123456"
["application"]=>string(10) "abcdef"
["is_valid"]=>bool(true)
["scopes"]=>array(0) {}
}
What it also shows is that the scopes-array is empty although I called logInWithReadPermissions with public_profile and email permissions. I even checked the Permissions again in the onSuccess()-method of the FacebookCallback. But before I store the data to the DB I would like to read the user_id, user_name and email on server side to ensure that they match the id_token.
UPDATE 2:
When I call $oauth->debugToken() with $id_token instead of $app_access_token I now get what I expected. It also shows the pemissions I set before. But still I have the problem that I don't know how to access the granted information (user_name, user_profile_picture, email, etc.).

Finally I managed to solve the whole problem. I guess my main problem was that I wasn't aware of when to use user access token and when app access token. In many discussions and even documentations one is just talking about access token without specifying whether he means the user or the app access token. That said, here my final solution:
$id_token = $_POST['idToken'];
$app_access_token = FB_APP_ID . "|" . FB_APP_SECRET;
$fb = new \Facebook\Facebook(['app_id' => FB_APP_ID,
'app_secret' => FB_APP_SECRET,
'default_graph_version' => 'v2.8',
'default_access_token' => $app_access_token]);
$oauth = $fb->getOAuth2Client();
$meta = $oauth->debugToken($app_access_token);
try {
$meta->validateAppId(FB_APP_ID);
$idTokenIsValid = true;
} catch(FacebookSDKException $e) {
$idTokenIsValid = false;
exit;
}
if($idTokenIsValid){
$resp = $fb->get('/me?fields=id,name,email,first_name,last_name,locale,gender', $id_token);
$user = $resp->getGraphUser();
if($user->getId() != null){
$facebook_id = $user->getId();
$picture = "graph.facebook.com/" . $facebook_id . "/picture";
}
if($user->getName() != null){
$name = $user->getName();
}
$emailIsVerified = false;
if($user->getEmail() != null){
$email = $user->getEmail();
$emailIsVerified = true;
}
if($user->getFirstName() != null){
$given_name = $user->getFirstName();
}
if($user->getLastName() != null){
$family_name = $user->getLastName();
}
if($user->getProperty('locale') != null){
$locale = $user->getProperty('locale');
}
if($user->getProperty('gender') != null){
$gender = $user->getProperty('gender');
}
if($emailIsVerified){
//update db or/and request data from db
}
}

Can you get a current users friendlist with facebook API? [duplicate]

I am trying to get my friend name and ids with Graph API v2.0, but data returns empty:
{
"data": [
]
}
When I was using v1.0, everything was OK with the following request:
FBRequest* friendsRequest = [FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,
NSDictionary* result,
NSError *error) {
NSArray* friends = [result objectForKey:#"data"];
NSLog(#"Found: %i friends", friends.count);
for (NSDictionary<FBGraphUser>* friend in friends) {
NSLog(#"I have a friend named %# with id %#", friend.name, friend.id);
}
}];
But now I cannot get friends!

In v2.0 of the Graph API, calling /me/friends returns the person's friends who also use the app.
In addition, in v2.0, you must request the user_friends permission from each user. user_friends is no longer included by default in every login. Each user must grant the user_friends permission in order to appear in the response to /me/friends. See the Facebook upgrade guide for more detailed information, or review the summary below.
If you want to access a list of non-app-using friends, there are two options:
If you want to let your people tag their friends in stories that they publish to Facebook using your App, you can use the /me/taggable_friends API. Use of this endpoint requires review by Facebook and should only be used for the case where you're rendering a list of friends in order to let the user tag them in a post.
If your App is a Game AND your Game supports Facebook Canvas, you can use the /me/invitable_friends endpoint in order to render a custom invite dialog, then pass the tokens returned by this API to the standard Requests Dialog.
In other cases, apps are no longer able to retrieve the full list of a user's friends (only those friends who have specifically authorized your app using the user_friends permission). This has been confirmed by Facebook as 'by design'.
For apps wanting allow people to invite friends to use an app, you can still use the Send Dialog on Web or the new Message Dialog on iOS and Android.
UPDATE: Facebook have published an FAQ on these changes here: https://developers.facebook.com/docs/apps/faq which explain all the options available to developers in order to invite friends etc.

Although Simon Cross's answer is accepted and correct, I thought I would beef it up a bit with an example (Android) of what needs to be done. I'll keep it as general as I can and focus on just the question. Personally I wound up storing things in a database so the loading was smooth, but that requires a CursorAdapter and ContentProvider which is a bit out of scope here.
I came here myself and then thought, now what?!
The Issue
Just like user3594351, I was noticing the friend data was blank. I found this out by using the FriendPickerFragment. What worked three months ago, no longer works. Even Facebook's examples broke. So my issue was 'How Do I create FriendPickerFragment by hand?
What Did Not Work
Option #1 from Simon Cross was not strong enough to invite friends to the app. Simon Cross also recommended the Requests Dialog, but that would only allow five requests at a time. The requests dialog also showed the same friends during any given Facebook logged in session. Not useful.
What Worked (Summary)
Option #2 with some hard work. You must make sure you fulfill Facebook's new rules: 1.) You're a game 2.) You have a Canvas app (Web Presence) 3.) Your app is registered with Facebook. It is all done on the Facebook developer website under Settings.
To emulate the friend picker by hand inside my app I did the following:
Create a tab activity that shows two fragments. Each fragment shows a list. One fragment for available friend (/me/friends) and another for invitable friends (/me/invitable_friends). Use the same fragment code to render both tabs.
Create an AsyncTask that will get the friend data from Facebook. Once that data is loaded, toss it to the adapter which will render the values to the screen.
Details
The AsynchTask
private class DownloadFacebookFriendsTask extends AsyncTask<FacebookFriend.Type, Boolean, Boolean> {
private final String TAG = DownloadFacebookFriendsTask.class.getSimpleName();
GraphObject graphObject;
ArrayList<FacebookFriend> myList = new ArrayList<FacebookFriend>();
#Override
protected Boolean doInBackground(FacebookFriend.Type... pickType) {
//
// Determine Type
//
String facebookRequest;
if (pickType[0] == FacebookFriend.Type.AVAILABLE) {
facebookRequest = "/me/friends";
} else {
facebookRequest = "/me/invitable_friends";
}
//
// Launch Facebook request and WAIT.
//
new Request(
Session.getActiveSession(),
facebookRequest,
null,
HttpMethod.GET,
new Request.Callback() {
public void onCompleted(Response response) {
FacebookRequestError error = response.getError();
if (error != null && response != null) {
Log.e(TAG, error.toString());
} else {
graphObject = response.getGraphObject();
}
}
}
).executeAndWait();
//
// Process Facebook response
//
//
if (graphObject == null) {
return false;
}
int numberOfRecords = 0;
JSONArray dataArray = (JSONArray) graphObject.getProperty("data");
if (dataArray.length() > 0) {
// Ensure the user has at least one friend ...
for (int i = 0; i < dataArray.length(); i++) {
JSONObject jsonObject = dataArray.optJSONObject(i);
FacebookFriend facebookFriend = new FacebookFriend(jsonObject, pickType[0]);
if (facebookFriend.isValid()) {
numberOfRecords++;
myList.add(facebookFriend);
}
}
}
// Make sure there are records to process
if (numberOfRecords > 0){
return true;
} else {
return false;
}
}
#Override
protected void onProgressUpdate(Boolean... booleans) {
// No need to update this, wait until the whole thread finishes.
}
#Override
protected void onPostExecute(Boolean result) {
if (result) {
/*
User the array "myList" to create the adapter which will control showing items in the list.
*/
} else {
Log.i(TAG, "Facebook Thread unable to Get/Parse friend data. Type = " + pickType);
}
}
}
The FacebookFriend class I created
public class FacebookFriend {
String facebookId;
String name;
String pictureUrl;
boolean invitable;
boolean available;
boolean isValid;
public enum Type {AVAILABLE, INVITABLE};
public FacebookFriend(JSONObject jsonObject, Type type) {
//
//Parse the Facebook Data from the JSON object.
//
try {
if (type == Type.INVITABLE) {
//parse /me/invitable_friend
this.facebookId = jsonObject.getString("id");
this.name = jsonObject.getString("name");
// Handle the picture data.
JSONObject pictureJsonObject = jsonObject.getJSONObject("picture").getJSONObject("data");
boolean isSilhouette = pictureJsonObject.getBoolean("is_silhouette");
if (!isSilhouette) {
this.pictureUrl = pictureJsonObject.getString("url");
} else {
this.pictureUrl = "";
}
this.invitable = true;
} else {
// Parse /me/friends
this.facebookId = jsonObject.getString("id");
this.name = jsonObject.getString("name");
this.available = true;
this.pictureUrl = "";
}
isValid = true;
} catch (JSONException e) {
Log.w("#", "Warnings - unable to process Facebook JSON: " + e.getLocalizedMessage());
}
}
}

Facebook has revised their policies now. You can’t get the whole friendlist anyway if your app does not have a Canvas implementation and if your app is not a game. Of course there’s also taggable_friends, but that one is for tagging only.
You will be able to pull the list of friends who have authorised the app only.
The apps that are using Graph API 1.0 will be working till April 30th, 2015 and after that it will be deprecated.
See the following to get more details on this:
User Friends
Facebook Application Development FAQ

In Swift 4.2 and Xcode 10.1:
If you want to get the friends list from Facebook, you need to submit your app for review in Facebook. See some of the Login Permissions:
Login Permissions
Here are the two steps:
1) First your app status is must be in Live
2) Get required permissions form Facebook.
1) Enable our app status live:
Go to the apps page and select your app
https://developers.facebook.com/apps/
Select status in the top right in Dashboard.
Submit privacy policy URL
Select category
Now our app is in Live status.
One step is completed.
2) Submit our app for review:
First send required requests.
Example: user_friends, user_videos, user_posts, etc.
Second, go to the Current Request page
Example: user_events
Submit all details
Like this submit for all requests (user_friends , user_events, user_videos, user_posts, etc.).
Finally submit your app for review.
If your review is accepted from Facebook's side, you are now eligible to read contacts, etc.

As Simon mentioned, this is not possible in the new Facebook API. Pure technically speaking you can do it via browser automation.
this is against Facebook policy, so depending on the country where you live, this may not be legal
you'll have to use your credentials / ask user for credentials and possibly store them (storing passwords even symmetrically encrypted is not a good idea)
when Facebook changes their API, you'll have to update the browser automation code as well (if you can't force updates of your application, you should put browser automation piece out as a webservice)
this is bypassing the OAuth concept
on the other hand, my feeling is that I'm owning my data including the list of my friends and Facebook shouldn't restrict me from accessing those via the API
Sample implementation using WatiN:
class FacebookUser
{
public string Name { get; set; }
public long Id { get; set; }
}
public IList<FacebookUser> GetFacebookFriends(string email, string password, int? maxTimeoutInMilliseconds)
{
var users = new List<FacebookUser>();
Settings.Instance.MakeNewIeInstanceVisible = false;
using (var browser = new IE("https://www.facebook.com"))
{
try
{
browser.TextField(Find.ByName("email")).Value = email;
browser.TextField(Find.ByName("pass")).Value = password;
browser.Form(Find.ById("login_form")).Submit();
browser.WaitForComplete();
}
catch (ElementNotFoundException)
{
// We're already logged in
}
browser.GoTo("https://www.facebook.com/friends");
var watch = new Stopwatch();
watch.Start();
Link previousLastLink = null;
while (maxTimeoutInMilliseconds.HasValue && watch.Elapsed.TotalMilliseconds < maxTimeoutInMilliseconds.Value)
{
var lastLink = browser.Links.Where(l => l.GetAttributeValue("data-hovercard") != null
&& l.GetAttributeValue("data-hovercard").Contains("user.php")
&& l.Text != null
).LastOrDefault();
if (lastLink == null || previousLastLink == lastLink)
{
break;
}
var ieElement = lastLink.NativeElement as IEElement;
if (ieElement != null)
{
var htmlElement = ieElement.AsHtmlElement;
htmlElement.scrollIntoView();
browser.WaitForComplete();
}
previousLastLink = lastLink;
}
var links = browser.Links.Where(l => l.GetAttributeValue("data-hovercard") != null
&& l.GetAttributeValue("data-hovercard").Contains("user.php")
&& l.Text != null
).ToList();
var idRegex = new Regex("id=(?<id>([0-9]+))");
foreach (var link in links)
{
string hovercard = link.GetAttributeValue("data-hovercard");
var match = idRegex.Match(hovercard);
long id = 0;
if (match.Success)
{
id = long.Parse(match.Groups["id"].Value);
}
users.Add(new FacebookUser
{
Name = link.Text,
Id = id
});
}
}
return users;
}
Prototype with implementation of this approach (using C#/WatiN) see https://github.com/svejdo1/ShadowApi. It is also allowing dynamic update of Facebook connector that is retrieving a list of your contacts.

Try /me/taggable_friends?limit=5000 using your JavaScript code
Or
try the Graph API:
https://graph.facebook.com/v2.3/user_id_here/taggable_friends?access_token=

If you are still struggling with this issue on a development mode.
Follow the same process as mentioned below:
create a test app of your main app,
create test users, automatically install app for test users and assign them 'user_friend' permission.
Add your test users as a friend with each other.
I followed the same process after going through alot of research and finally it worked.

In the Facebook SDK Graph API v2.0 or above, you must request the user_friends permission from each user in the time of Facebook login since user_friends is no longer included by default in every login; we have to add that.
Each user must grant the user_friends permission in order to appear in the response to /me/friends.
let fbLoginManager : FBSDKLoginManager = FBSDKLoginManager()
fbLoginManager.loginBehavior = FBSDKLoginBehavior.web
fbLoginManager.logIn(withReadPermissions: ["email","user_friends","public_profile"], from: self) { (result, error) in
if (error == nil) {
let fbloginresult : FBSDKLoginManagerLoginResult = result!
if fbloginresult.grantedPermissions != nil {
if (fbloginresult.grantedPermissions.contains("email")) {
// Do the stuff
}
else {
}
}
else {
}
}
}
So at the time of Facebook login, it prompts with a screen which contain all the permissions:
If the user presses the Continue button, the permissions will be set. When you access the friends list using Graph API, your friends who logged into the application as above will be listed
if ((FBSDKAccessToken.current()) != nil) {
FBSDKGraphRequest(graphPath: "/me/friends", parameters: ["fields" : "id,name"]).start(completionHandler: { (connection, result, error) -> Void in
if (error == nil) {
print(result!)
}
})
}
The output will contain the users who granted the user_friends permission at the time of login to your application through Facebook.
{
data = (
{
id = xxxxxxxxxx;
name = "xxxxxxxx";
}
);
paging = {
cursors = {
after = xxxxxx;
before = xxxxxxx;
};
};
summary = {
"total_count" = 8;
};
}

Authenticating user against app engine endpoints

I am creating my first app engine app and having problems with authenticating the users.
I have followed the https://cloud.google.com/appengine/docs/python/endpoints/consume_android#making_authenticated_calls - seems a bit magical, that I just "setAccountName" and it is supposed to work, but w/e, I guess that it should load the app scopes from Android Audience and then just check if the account name I passed has actually logged into the device.
The API call works, passes the authentication, but sadly - the "endpoints.get_current_user()" function on the backend returns None.
So I kept digging, but I can't seem to find anything on the topic. Best thing I have found is http://blog.notdot.net/2010/05/Authenticating-against-App-Engine-from-an-Android-app - but that's an article from 6 years ago and the author uses HTTP client and nothing related to endpoints libs.
All I can think of would be to follow some "non-endpoints" way of adding "login with Google" to my app and then try to pass the credentials I would get to my API builder, but that just feels wrong, like there should be an easier way to do that.
So, am I missing some step, that was not mentioned in https://cloud.google.com/appengine/docs/python/endpoints/consume_android#making_authenticated_calls ?
Actual code (slightly simplified) below:
Backend:
auth_api = endpoints.api(
name='auth_api',
version='v1.0',
auth_level=endpoints.AUTH_LEVEL.REQUIRED,
allowed_client_ids=[
ANDROID_CLIENT_ID,
WEB_CLIENT_ID,
endpoints.API_EXPLORER_CLIENT_ID,
],
audiences=[
WEB_CLIENT_ID,
endpoints.API_EXPLORER_CLIENT_ID,
],
scopes=[
'https://www.googleapis.com/auth/userinfo.profile',
'https://www.googleapis.com/auth/userinfo.email',
],
)
#auth_api.api_class(resource_name='rating')
class RatingHandler(remote.Service):
#endpoints.method(
message_types.VoidMessage,
RatingsMessage,
path='rating/getRatings',
http_method='GET',
)
def getRatings(self, request):
rating_query = Rating.query(
ancestor=ndb.Key(
Account,
endpoints.get_current_user().user_id(), // ERROR! endpoints.get_current_user() is None
)
).order(-Rating.rating)
Client:
// Somewhere these lines exist
if (credential == null || credential.getSelectedAccountName() == null) {
startActivityForResult(
AuthUtils.getCredentials(getActivity()).newChooseAccountIntent(),
AuthUtils.REQUEST_ACCOUNT_PICKER
);
} else {
LoadRatings();
}
#Override
public void onActivityResult(
int requestCode,
int resultCode,
Intent data
) {
super.onActivityResult(requestCode, resultCode, data);
if (data != null && data.getExtras() != null) {
String accountName =
data.getExtras().getString(
AccountManager.KEY_ACCOUNT_NAME
);
if (accountName != null) {
credential = GoogleAccountCredential.usingAudience(
getApplicationContext(),
"server:client_id:" + Constants.ANDROID_AUDIENCE
);
credential.setSelectedAccountName(accountName);
LoadRatings();
}
}
}
public void LoadRatings() {
// AuthApi was auto-generated by Google App Engine based on my Backend
AuthApi.Builder api = new AuthApi.Builder(
AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(),
credential
).setApplicationName(getPackageName());
AuthApi service = api.build();
try {
ApiMessagesRatingRatedBeerListMessage result = service.rating().getRatings().
// some stuff done with result, but the Exception is thrown in line above

OK, I figured it out. When I removed "scopes" from API declaration, it works. I'm not sure how I am going to access user's email / profile yet, but that's at least a step forward.
This issue has been actually brought up before - How to add more scopes in GoogleCloud Endpoints - sadly, without any answers

You won't have a User object (Entity that is) on the backend created for you. You have to do that yourself. For example:
#Entity
public class AppEngineUser {
#Id
private String email;
private User user;
private AppEngineUser() {}
public AppEngineUser(User user) {
this.user = user;
this.email = user.getEmail();
}
public User getUser() {
return user;
}
public Key<AppEngineUser> getKey() {
return Key.create(AppEngineUser.class, email);
}
}
When you create an API method and specify a User object like this:
#ApiMethod(name = "insertRecord", path = "insert_record", httpMethod = HttpMethod.POST)
public Record insertRecord(User user, Record record)
// check if google user is authenticated
throws UnauthorizedException {
if (user == null) {
throw new UnauthorizedException("Authorization required");
}
// user is authenticated... do some stuff!
}
The User object is an injected type. It is actually: com.google.appengine.api.users.User. See "injected types" on https://cloud.google.com/appengine/docs/java/endpoints/paramreturn_types.
What this means is that GAE injects the Google user object if the user provided the correct credentials to their Google+ account. If they did not, then User will be null. If it is, you can throw an UnauthorizedException the way the above method does.
You can now get things like the User's gmail address among other things if the user object is not null. From there, you must store those values in your own custom entity, such as AppEngineUser and save it to the datastore. Then you can do other things with it later, such as load it, check if the user is registered and whatever else all by yourself.
Hope that helps!

How to authenticate multiple accounts in Android dropbox sdk 1.5.1?

I need to authenticate multiple accounts
I have searched the forum, and it seems like it is possible
So I gave it a try, but I failed
I had tried using the same API APP_KEY & APP_SECRET, it failed
Both my session return the same access tokens pair
So I try using different API APP_KEY & APP_SECRET, under same Dropbox account, it failed too
So I try again using different API APP_KEY & APP_SECRET from different Dropbox accounts, it still failed
Anyone can provide me a solution? Thanks in advance
Below is my code, mainly comes from the DBroulette example
onCreate (android)
AndroidAuthSession session = buildSession();
mApi = new DropboxAPI<AndroidAuthSession>(session);
AndroidAuthSession session2 = buildSession2();
mApi2 = new DropboxAPI<AndroidAuthSession>(session2);
onResume (android)
AndroidAuthSession session = mApi.getSession();
if (session.isLinked()) {
dbsetLoggedIn(true);
} else {
dbsetLoggedIn(false);
}
if (session.authenticationSuccessful()) {
try {
session.finishAuthentication();
TokenPair tokens = session.getAccessTokenPair();
dbstoreKeys(tokens.key, tokens.secret);
dbsetLoggedIn(true);
statusTv.append("Dropbox authentication successful\n");
} catch (IllegalStateException e) {
Log.i("Dropbox Error", "Error authenticating", e);
}
}
AndroidAuthSession session2 = mApi2.getSession();
if (session2.isLinked()) {
dbsetLoggedIn2(true);
} else {
dbsetLoggedIn2(false);
}
if (session2.authenticationSuccessful()) {
try {
session2.finishAuthentication();
TokenPair tokens = session2.getAccessTokenPair();
dbstoreKeys2(tokens.key, tokens.secret);
dbsetLoggedIn2(true);
statusTv.append("2Dropbox authentication successful\n");
} catch (IllegalStateException e) {
Log.i("Dropbox Error", "Error authenticating", e);
}
}
OTHERS CODES
private AndroidAuthSession buildSession() {
AppKeyPair appKeyPair = new AppKeyPair(Constants.APP_KEY, Constants.APP_SECRET);
AndroidAuthSession session;
String[] stored = getKeys();
if (stored != null) {
AccessTokenPair accessToken = new AccessTokenPair(stored[0], stored[1]);
session = new AndroidAuthSession(appKeyPair, Constants.ACCESS_TYPE, accessToken);
} else {
session = new AndroidAuthSession(appKeyPair, Constants.ACCESS_TYPE);
}
return session;
}
private AndroidAuthSession buildSession2() {
AppKeyPair appKeyPair = new AppKeyPair(Constants.APP_KEY2, Constants.APP_SECRET2);
AndroidAuthSession session;
String[] stored = getKeys2();
if (stored != null) {
AccessTokenPair accessToken = new AccessTokenPair(stored[0], stored[1]);
session = new AndroidAuthSession(appKeyPair, Constants.ACCESS_TYPE, accessToken);
} else {
session = new AndroidAuthSession(appKeyPair, Constants.ACCESS_TYPE);
}
return session;
}
private String[] getKeys() {
SharedPreferences prefs = getSharedPreferences(Constants.ACCOUNT_PREFS_NAME, 0);
String key = prefs.getString(Constants.ACCESS_KEY_NAME, null);
String secret = prefs.getString(Constants.ACCESS_SECRET_NAME, null);
if (key != null && secret != null) {
String[] ret = new String[2];
ret[0] = key;
ret[1] = secret;
return ret;
} else {
return null;
}
}
private String[] getKeys2() {
SharedPreferences prefs = getSharedPreferences(Constants.ACCOUNT_PREFS_NAME, 0);
String key = prefs.getString(Constants.ACCESS_KEY_NAME2, null);
String secret = prefs.getString(Constants.ACCESS_SECRET_NAME2, null);
if (key != null && secret != null) {
String[] ret = new String[2];
ret[0] = key;
ret[1] = secret;
return ret;
} else {
return null;
}
}
I noticed that I MAYBE need to add something into the manifest in the adding another
BUT I cannot add second activity in android manifest with different APP KEY because it will cause duplicated error
How can I do it?
<activity
android:name="com.dropbox.client2.android.AuthActivity"
android:configChanges="orientation|keyboard"
android:launchMode="singleTask" >
<intent-filter>
<data android:scheme="db-XXXXXXXXXXXX" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

I'm not sure if this would help you a little bit in your use case, but maybe it could be a workaround to write your own authenticator to use the Android build-in account management to seperate the authentication processes.
Here is an example: http://udinic.wordpress.com/2013/04/24/write-your-own-android-authenticator/

I ran into a similar requirement and this is how I worked around.
1st App
Get access for your first application using the normal dropbox flow.
Note:
A likely case for 2 dropbox applications requirement could be accessing user account from your server using a different dropbox application. Please note that you can share the access tokens from 1st app with your server and reuse these credentials safely, provided you are using the same dropbox application on server. If you can't live with that, continue reading.
2nd App
Option 1: Using another Android app
Create another Android App just for the oAuth flow for 2nd dropbox app.
Use Intent to trigger oAuthflow in app2 from app1.
Again, use intent to send back token data from app2 to app1
A few tips, if you are going to use this:
Make the background of App2 oAuth Activity transparent
Remove Intent change animations for app1 <-> app2 transitions
Trigger oAuth in App2 Activity's onCreate
Option 2: If you are keep on doing this with only one Android app, I found a possible workaround as described below.
Prompt your user to open this url:
https://www.dropbox.com/1/oauth2/authorize?response_type=code&client_id=APP2_CLIENT_ID
They will have to copy back an authorization code returned by Dropbox
This authorization code can be used to obtain access_tokens for 2nd app
If you are going to use the 2nd app in a server side context, simply share the authorization code with your server. You can obtain tokens from authorization code, in a python flow, like this:
flow = client.DropboxOAuth2FlowNoRedirect(app2_key, app2_secret)
authorize_url = flow.start()
access_token, user_id = flow.finish(auth_code_from_client)
For more generic ways to obtain access_tokens from authorization keys, look at this

Dropbox API is having some issues or you can say a trick that you need to use in order to do multiple logins.
1. Declare sAuthenticatedUid as String[]
private static final String[] sAuthenticatedUid = { "dummy"}; // Keeping only one Auth Id to keep last authenticated item
2. Start OAuth using different method
Use session.startOAuth2Authentication(act, "", sAuthenticatedUid) for authentication instead of startOAuth2Authentication()
3. Maintain Variables on authentication Success
sAuthenticatedUid[0] = sessionApi.getSession().finishAuthentication(); // Save the last successful UID
String oauth2AccessToken = sessionApi.getSession().getOAuth2AccessToken();
AuthActivity.result = null; // Reset this so that we can login again, call only after finishAuthentication()
AuthActivity is com.dropbox.client2.android.AuthActivity which stores the result from last authentication and can create problems as this is static variable.
You should be able to do as many logins as you want now.