Develop Reference

Google Drive REST API: java.lang.IllegalArgumentException: the name must not be empty: null

I'm developing an android application that makes use of Google Drive REST API. I just want to list all files in my drive. But when the method listDriveFiles() is called I get an error as java.lang.IllegalArgumentException: the name must not be empty: null.
I found similar problems asked here and most of them says to add the permission GET_ACCOUNT. I already did that but no luck. One answer points to check the value of getAccount() and when I did that I get the value as null.
Error:
java.lang.IllegalArgumentException: the name must not be empty: null
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2358)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2410)
at android.app.ActivityThread.access$800(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5388)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:655)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalArgumentException: the name must not be empty: null
at android.accounts.Account.<init>(Account.java:48)
at com.google.android.gms.auth.zzd.getToken(Unknown Source)
at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.getToken(GoogleAccountCredential.java:267)
at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential$RequestHandler.intercept(GoogleAccountCredential.java:292)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:868)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
at com.datacubeinfo.drive2.MainActivity.listDriveFiles(MainActivity.java:68)
at com.datacubeinfo.drive2.MainActivity.onDriveClientReady(MainActivity.java:88)
at com.datacubeinfo.drive2.BaseGoogleDriveActivity.initializeDriveClient(BaseGoogleDriveActivity.java:149)
at com.datacubeinfo.drive2.BaseGoogleDriveActivity.signIn(BaseGoogleDriveActivity.java:82)
at com.datacubeinfo.drive2.BaseGoogleDriveActivity.onStart(BaseGoogleDriveActivity.java:43)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1174)
at android.app.Activity.performStart(Activity.java:5290)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2410) 
at android.app.ActivityThread.access$800(ActivityThread.java:155) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1331) 
at android.os.Handler.dispatchMessage(Handler.java:110) 
at android.os.Looper.loop(Looper.java:193) 
at android.app.ActivityThread.main(ActivityThread.java:5388) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:515) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:655) 
at dalvik.system.NativeStart.main(Native Method)
MainActivity.java
public class MainActivity extends BaseGoogleDriveActivity {
private static final String APPLICATION_NAME = "Google Drive API";
/**
* Global instance of the HTTP transport.
*/
private static HttpTransport HTTP_TRANSPORT = AndroidHttp.newCompatibleTransport();
/**
* Global instance of the JSON factory.
*/
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
private Drive mDrive;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.login).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
signIn();
}
});
findViewById(R.id.listFile).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... voids) {
try {
listDriveFiles();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
};
task.execute();
}
});
}
public void listDriveFiles() throws IOException {
// Print the names and IDs for up to 10 files.
FileList result = mDrive.files().list()
.setPageSize(10)
.setFields("nextPageToken, files(id, name)")
.execute();
List<File> files = result.getFiles();
if (files == null || files.isEmpty()) {
System.out.println("No files found.");
} else {
System.out.println("Files:");
for (File file : files) {
System.out.printf("%s (%s)\n", file.getName(), file.getId());
}
}
}
#Override
protected void onDriveClientReady(String displayName, String email, Uri avatar) {
// Build a new authorized API client service.
mDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredential())
.setApplicationName(APPLICATION_NAME)
.build();
try {
listDriveFiles();
} catch (IOException e) {
e.printStackTrace();
}
}
}
BaseGoogleDriveActivity.java
public abstract class BaseGoogleDriveActivity extends AppCompatActivity {
private static final String TAG = "BaseDriveActivity";
public static final Scope SCOPE_FILE = new Scope("https://www.googleapis.com/auth/drive.file");
public static final Scope SCOPE_APPFOLDER = new Scope("https://www.googleapis.com/auth/drive.appdata");
/**
* Request code for Google Sign-in
*/
protected static final int REQUEST_CODE_SIGN_IN = 1;
private String mToken;
private GoogleAccountCredential mCredential;
#Override
protected void onStart() {
super.onStart();
signIn();
}
/**
* Handles resolution callbacks.
*/
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_SIGN_IN) {
if (resultCode != RESULT_OK) {
// Sign-in may fail or be cancelled by the user. For this sample, sign-in is
// required and is fatal. For apps where sign-in is optional, handle
// appropriately
Log.e(TAG, "Sign-in failed.");
return;
}
Task<GoogleSignInAccount> getAccountTask =
GoogleSignIn.getSignedInAccountFromIntent(data);
if (getAccountTask.isSuccessful()) {
initializeDriveClient(getAccountTask.getResult());
} else {
Log.e(TAG, "Sign-in failed.");
}
}
super.onActivityResult(requestCode, resultCode, data);
}
/**
* Starts the sign-in process and initializes the Drive client.
*/
protected void signIn() {
Set<Scope> requiredScopes = new HashSet<>(2);
requiredScopes.add(SCOPE_FILE);
requiredScopes.add(SCOPE_APPFOLDER);
GoogleSignInAccount signInAccount = GoogleSignIn.getLastSignedInAccount(this);
if (signInAccount != null && signInAccount.getGrantedScopes().containsAll(requiredScopes)) {
initializeDriveClient(signInAccount);
} else {
GoogleSignInOptions signInOptions =
new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestScopes(SCOPE_FILE)
.requestScopes(SCOPE_APPFOLDER)
.build();
GoogleSignInClient googleSignInClient = GoogleSignIn.getClient(this, signInOptions);
startActivityForResult(googleSignInClient.getSignInIntent(), REQUEST_CODE_SIGN_IN);
}
}
protected boolean checkSignedIn(boolean initClient) {
Set<Scope> requiredScopes = new HashSet<>(2);
requiredScopes.add(SCOPE_FILE);
requiredScopes.add(SCOPE_APPFOLDER);
GoogleSignInAccount signInAccount = GoogleSignIn.getLastSignedInAccount(this);
if (signInAccount != null && signInAccount.getGrantedScopes().containsAll(requiredScopes)) {
if (initClient) {
initializeDriveClient(signInAccount);
}
return true;
} else {
return false;
}
}
protected void signOut() {
GoogleSignInOptions signInOptions =
new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestScopes(SCOPE_FILE)
.requestScopes(SCOPE_APPFOLDER)
.build();
GoogleSignInClient googleSignInClient = GoogleSignIn.getClient(this, signInOptions);
googleSignInClient.signOut();
}
/**
* Continues the sign-in process, initializing the Drive clients with the current
* user's account.
*/
private void initializeDriveClient(final GoogleSignInAccount signInAccount) {
mCredential = GoogleAccountCredential.usingOAuth2(this, Collections.singleton(SCOPE_FILE.getScopeUri()));
mCredential.setSelectedAccount(signInAccount.getAccount());
Log.e(TAG, ""+signInAccount.getAccount());
onDriveClientReady(signInAccount.getDisplayName(), signInAccount.getEmail(), signInAccount.getPhotoUrl());
}
public GoogleAccountCredential getCredential() {
return mCredential;
}
protected String getToken() {
return mToken;
}
/**
* Called after the user has signed in and the Drive client has been initialized.
*/
protected abstract void onDriveClientReady(final String displayName, final String email, final Uri avatar);
}

After some research I found what was missing. As I mentioned in the question the getAccount() always returned null value. So I checked the documentation of GoogleSignInAccount class.
You can check it here.
There it states that
getAccount() is a convenient wrapper for getEmail() which returns an
android.accounts.Account object
The getEmail() returns null if requestEmail() is not configured. If getEmail() is null, then is getAccount(). So I made changes in my code as below.
GoogleSignInOptions signInOptions = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestScopes(SCOPE_FILE)
.requestScopes(SCOPE_APPFOLDER)
.requestEmail()
.build();
Now it works perfect.

In my case (Google Drive REST API v3), ProGuard was the culprit, as the code was working fine in debug mode.
Just adding -keep class com.google.** { *;} to ProGuard rules got rid of the issue.

Unable to exchange authorization code for access token and refresh token in Cross Client google oauth2.0

I've been having problems implementing Google Play Services login on my android app and passing the authorisation code to my backend server, so the server will exchange the code for access token and refresh token.
First let me write a few lines what has already been tried/read:
on code.google.com/apis/console I've created a new project, with two clients (WEB client and Android installed client)
read articles onhttps://developers.google.com/+/mobile/android/sign-in#cross-platform_single_sign_on and http://android-developers.blogspot.com/2013/01/verifying-back-end-calls-from-android.html
Here is my code for client side that retrieves the authorization code and IdToken:
package com.google.drive.samples.crossclientoauth2;
import java.util.Arrays;
import java.util.List;
import android.accounts.AccountManager;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.widget.EditText;
import com.google.android.gms.auth.GoogleAuthUtil;
import com.google.android.gms.auth.UserRecoverableAuthException;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException;
public class MainActivity extends Activity {
final private String CLIENT_ID = MY WEB SERVER'S CLIENT ID;
final private List<String> SCOPES = Arrays.asList(new String[]{
"https://www.googleapis.com/auth/plus.login",
"https://www.googleapis.com/auth/drive",
"https://www.googleapis.com/auth/youtube",
"https://www.googleapis.com/auth/youtube.readonly"
});
// I have modified the above line of code.
private GoogleAccountCredential mCredential;
private EditText mExchangeCodeEditText;
private EditText mIdTokenEditText;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mExchangeCodeEditText = (EditText) findViewById(R.id.editTextExchangeCode);
mIdTokenEditText = (EditText) findViewById(R.id.editTextIdToken);
// initiate a credential object with drive and plus.login scopes
// cross identity is only available for tokens retrieved with plus.login
mCredential = GoogleAccountCredential.usingOAuth2(this, null);
// user needs to select an account, start account picker
startActivityForResult(
mCredential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
}
/**
* Handles the callbacks from result returning
* account picker and permission requester activities.
*/
#Override
protected void onActivityResult(
final int requestCode, final int resultCode, final Intent data) {
switch (requestCode) {
// user has returned back from the account picker,
// initiate the rest of the flow with the account he/she has chosen.
case REQUEST_ACCOUNT_PICKER:
String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
if (accountName != null) {
mCredential.setSelectedAccountName(accountName);
new RetrieveExchangeCodeAsyncTask().execute();
new RetrieveJwtAsyncTask().execute();
}
break;
// user has returned back from the permissions screen,
// if he/she has given enough permissions, retry the the request.
case REQUEST_AUTHORIZATION:
if (resultCode == Activity.RESULT_OK) {
// replay the same operations
new RetrieveExchangeCodeAsyncTask().execute();
new RetrieveJwtAsyncTask().execute();
}
break;
}
}
/**
* Retrieves the exchange code to be sent to the
* server-side component of the app.
*/
public class RetrieveExchangeCodeAsyncTask
extends AsyncTask<Void, Boolean, String> {
#Override
protected String doInBackground(Void... params) {
String scope = String.format("oauth2:server:client_id:%s:api_scope:%s",
CLIENT_ID, TextUtils.join(" ", SCOPES));
try {
return GoogleAuthUtil.getToken(
MainActivity.this, mCredential.getSelectedAccountName(), scope);
} catch (UserRecoverableAuthException e) {
startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
} catch (Exception e) {
e.printStackTrace(); // TODO: handle the exception
}
return null;
}
#Override
protected void onPostExecute(String code) {
// exchange code with server-side to retrieve an additional
// access token on the server-side.
Log.v("first One ","code 1 is: "+ code);
mExchangeCodeEditText.setText(code);
}
}
/**
* Retrieves a JWT to identify the user without the
* regular client-side authorization flow. The jwt payload needs to be
* sent to the server-side component.
*/
public class RetrieveJwtAsyncTask
extends AsyncTask<Void, Boolean, String> {
#Override
protected String doInBackground(Void... params) {
String scope = "audience:server:client_id:" + CLIENT_ID;
try {
return GoogleAuthUtil.getToken(
MainActivity.this, mCredential.getSelectedAccountName(), scope);
} catch(UserRecoverableAuthIOException e) {
startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
} catch (Exception e) {
e.printStackTrace(); // TODO: handle the exception
}
return null;
}
#Override
protected void onPostExecute(String idToken) {
// exchange encrypted idToken with server-side to identify the user
Log.v("Second One","2222"+ idToken);
mIdTokenEditText.setText(idToken);
}
}
private static final int REQUEST_ACCOUNT_PICKER = 100;
private static final int REQUEST_AUTHORIZATION = 200;
}
The above code gives me two codes:
1.One returned by RetrieveExchangeCodeAsyncTask - named code.
2.Second returned by RetrieveJwtAsyncTask class- named IdToken.
Now in the first place i am confused as to which one from the above do i need to send to my web server where it will be exchanged.
I tried using the first one(the one that starts as "4/....") for exchange at my server side but got A null pointer exception.
Also please specify what redirect URI i need to use.
Here is my server-side code for exchange:
package com.myAuthSample.tial;
import java.io.IOException;
import com.myAuthSample.tial.MyClass.CodeExchangeException;
import com.myAuthSample.tial.MyClass.NoRefreshTokenException;
public class MyMainDemo {
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
MyClass.getCredentials("4/...something...", "state"); //passed the retrieved authorization code
} catch (CodeExchangeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoRefreshTokenException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public class MyClass {
// Path to client_secrets.json which should contain a JSON document such as:
// {
// "web": {
// "client_id": "[[YOUR_CLIENT_ID]]",
// "client_secret": "[[YOUR_CLIENT_SECRET]]",
// "auth_uri": "https://accounts.google.com/o/oauth2/auth",
// "token_uri": "https://accounts.google.com/o/oauth2/token"
// }
// }
private static final String CLIENTSECRETS_LOCATION = "/client_secrets_2.json";// client secrets of my android client
// private static final String REDIRECT_URI = "<YOUR_REGISTERED_REDIRECT_URI>";
private static String REDIRECT_URI ="";
private static final List<String> SCOPES = Arrays.asList(
"https://www.googleapis.com/auth/plus.login",
"https://www.googleapis.com/auth/youtube");
private static GoogleAuthorizationCodeFlow flow = null;
/**
* Exception thrown when an error occurred while retrieving credentials.
*/
public static class GetCredentialsException extends Exception {
protected String authorizationUrl;
/**
* Construct a GetCredentialsException.
*
* #param authorizationUrl The authorization URL to redirect the user to.
*/
public GetCredentialsException(String authorizationUrl) {
this.authorizationUrl = authorizationUrl;
}
/**
* Set the authorization URL.
*/
public void setAuthorizationUrl(String authorizationUrl) {
this.authorizationUrl = authorizationUrl;
}
/**
* #return the authorizationUrl
*/
public String getAuthorizationUrl() {
return authorizationUrl;
}
}
/**
* Exception thrown when a code exchange has failed.
*/
public static class CodeExchangeException extends GetCredentialsException {
/**
* Construct a CodeExchangeException.
*
* #param authorizationUrl The authorization URL to redirect the user to.
*/
public CodeExchangeException(String authorizationUrl) {
super(authorizationUrl);
}
}
/**
* Exception thrown when no refresh token has been found.
*/
public static class NoRefreshTokenException extends GetCredentialsException {
/**
* Construct a NoRefreshTokenException.
*
* #param authorizationUrl The authorization URL to redirect the user to.
*/
public NoRefreshTokenException(String authorizationUrl) {
super(authorizationUrl);
}
}
/**
* Exception thrown when no user ID could be retrieved.
*/
private static class NoUserIdException extends Exception {
}
/**
* Retrieved stored credentials for the provided user ID.
*
* #param userId User's ID.
* #return Stored Credential if found, {#code null} otherwise.
*/
static Credential getStoredCredentials(String userId) {
// TODO: Implement this method to work with your database. Instantiate a new
// Credential instance with stored accessToken and refreshToken.
throw new UnsupportedOperationException();
}
/**
* Store OAuth 2.0 credentials in the application's database.
*
* #param userId User's ID.
* #param credentials The OAuth 2.0 credentials to store.
*/
static void storeCredentials(String userId, Credential credentials) {
// TODO: Implement this method to work with your database.
// Store the credentials.getAccessToken() and credentials.getRefreshToken()
// string values in your database.
System.out.println("credentials are : " + credentials.toString());
throw new UnsupportedOperationException();
}
/**
* Build an authorization flow and store it as a static class attribute.
*
* #return GoogleAuthorizationCodeFlow instance.
* #throws IOException Unable to load client_secrets.json.
*/
static GoogleAuthorizationCodeFlow getFlow() throws IOException {
if (flow == null) {
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory(); //...this was the original line....
// JsonFactory jsonFactory = new JacksonFactory();
//my code....
Reader clientSecretReader = new InputStreamReader(MyClass.class.getResourceAsStream(CLIENTSECRETS_LOCATION));
GoogleClientSecrets clientSecrets =
GoogleClientSecrets.load(jsonFactory,clientSecretReader);
REDIRECT_URI =clientSecrets.getDetails().getRedirectUris().get(0);
// my code ends...
/* GoogleClientSecrets clientSecrets =
GoogleClientSecrets.load(jsonFactory,
MyClass.class.getResourceAsStream(CLIENTSECRETS_LOCATION));
*/
flow =
new GoogleAuthorizationCodeFlow.Builder(httpTransport, jsonFactory, clientSecrets, SCOPES)
.setAccessType("offline").setApprovalPrompt("force").build();
}
return flow;
}
/**
* Exchange an authorization code for OAuth 2.0 credentials.
*
* #param authorizationCode Authorization code to exchange for OAuth 2.0
* credentials.
* #return OAuth 2.0 credentials.
* #throws CodeExchangeException An error occurred.
*/
static Credential exchangeCode(String authorizationCode)
throws CodeExchangeException {
try {
GoogleAuthorizationCodeFlow flow = getFlow();
GoogleTokenResponse response =
flow.newTokenRequest(authorizationCode).setRedirectUri(REDIRECT_URI).execute();
return flow.createAndStoreCredential(response, null);
} catch (IOException e) {
System.err.println("An error occurred: " + e);
throw new CodeExchangeException(null);
}
}
/**
* Send a request to the UserInfo API to retrieve the user's information.
*
* #param credentials OAuth 2.0 credentials to authorize the request.
* #return User's information.
* #throws NoUserIdException An error occurred.
*/
static Userinfo getUserInfo(Credential credentials)
throws NoUserIdException {
Oauth2 userInfoService =
new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credentials).build();
Userinfo userInfo = null;
try {
userInfo = userInfoService.userinfo().get().execute();
} catch (IOException e) {
System.err.println("An error occurred: " + e);
}
if (userInfo != null && userInfo.getId() != null) {
return userInfo;
} else {
throw new NoUserIdException();
}
}
/**
* Retrieve the authorization URL.
*
* #param emailAddress User's e-mail address.
* #param state State for the authorization URL.
* #return Authorization URL to redirect the user to.
* #throws IOException Unable to load client_secrets.json.
*/
public static String getAuthorizationUrl(String emailAddress, String state) throws IOException {
GoogleAuthorizationCodeRequestUrl urlBuilder =
getFlow().newAuthorizationUrl().setRedirectUri(REDIRECT_URI).setState(state);
urlBuilder.set("user_id", emailAddress);
return urlBuilder.build();
}
/**
* Retrieve credentials using the provided authorization code.
*
* This function exchanges the authorization code for an access token and
* queries the UserInfo API to retrieve the user's e-mail address. If a
* refresh token has been retrieved along with an access token, it is stored
* in the application database using the user's e-mail address as key. If no
* refresh token has been retrieved, the function checks in the application
* database for one and returns it if found or throws a NoRefreshTokenException
* with the authorization URL to redirect the user to.
*
* #param authorizationCode Authorization code to use to retrieve an access
* token.
* #param state State to set to the authorization URL in case of error.
* #return OAuth 2.0 credentials instance containing an access and refresh
* token.
* #throws NoRefreshTokenException No refresh token could be retrieved from
* the available sources.
* #throws IOException Unable to load client_secrets.json.
*/
public static Credential getCredentials(String authorizationCode, String state)
throws CodeExchangeException, NoRefreshTokenException, IOException {
String emailAddress = "";
try {
Credential credentials = exchangeCode(authorizationCode);
Userinfo userInfo = getUserInfo(credentials);
String userId = userInfo.getId();
emailAddress = userInfo.getEmail();
if (credentials.getRefreshToken() != null) {
storeCredentials(userId, credentials);
return credentials;
} else {
credentials = getStoredCredentials(userId);
if (credentials != null && credentials.getRefreshToken() != null) {
return credentials;
}
}
} catch (CodeExchangeException e) {
e.printStackTrace();
// Drive apps should try to retrieve the user and credentials for the current
// session.
// If none is available, redirect the user to the authorization URL.
e.setAuthorizationUrl(getAuthorizationUrl(emailAddress, state));
throw e;
} catch (NoUserIdException e) {
e.printStackTrace();
}
// No refresh token has been retrieved.
String authorizationUrl = getAuthorizationUrl(emailAddress, state);
throw new NoRefreshTokenException(authorizationUrl);
}
}
Also,am i passing the correct client_secret.json file in my server side code(in MyClass)--which is of android client.
Please help!!!
Thanx in advance.

Use from this:
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest;
import com.google.api.client.googleapis.auth.oauth2.GoogleIdToken;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson.JacksonFactory;
private final val TRANSPORT: HttpTransport = new NetHttpTransport()
private final val JSON_FACTORY: JacksonFactory = new JacksonFactory()
GoogleTokenResponse tokenResponse = new GoogleAuthorizationCodeTokenRequest(TRANSPORT, JSON_FACTORY,
CLIENT_ID, CLIENT_SECRET, code, "postmessage").execute();
GoogleIdToken idToken = tokenResponse.parseIdToken();
String gplusId = idToken.getPayload().getSubject();
you must replace your values of the client_id,client_secret and code with above related variables.
more information is in the flowing link:
https://github.com/googleplus/gplus-quickstart-java/blob/master/src/com/google/plus/samples/quickstart/Signin.java
Also you can get the Google API libraries from this link:
http://repo1.maven.org/maven2/com/google/

You need to exchange the code for an access token indeed. The id_token is meant for your client only and self-contained so it does not need to be exchanged for anything else. The redirect_uri that you need to send along with the code in the exchange request to the token endpoint is the exact same redirect_uri value that you sent originally in the authorization request that went to the authorization endpoint (and that is registered for your client in the Google API Console), so looking at your code it is the one retrieved with clientSecrets.getDetails().getRedirectUris().get(0);

Authentication with google

Based on this I'm trying to auth with google. But a GoogleAuthException is thrown and the message is "BadUsername". This confuses me since I'm picking the email/username by the account picker. Anyone got a clue about what I'm doing wrong?
public class MainActivity extends Activity implements MainFragment.OnFragmentInteractionListener {
private static final String TAG = MainActivity.class.getSimpleName();
static final int REQUEST_CODE_PICK_ACCOUNT = 1000;
String mEmail; // Received from newChooseAccountIntent(); passed to getToken()
private static final String SCOPE =
"oauth2:https://www.googleapis.com/auth/userinfo.profile";
#Override
protected void onCreate(Bundle savedInstanceState) {
...
pickUserAccount();
}
private void pickUserAccount() {
String[] accountTypes = new String[]{"com.google"};
Intent intent = AccountPicker.newChooseAccountIntent(null, null,
accountTypes, false, null, null, null, null);
startActivityForResult(intent, REQUEST_CODE_PICK_ACCOUNT);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE_PICK_ACCOUNT) {
// Receiving a result from the AccountPicker
if (resultCode == RESULT_OK) {
mEmail = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
// With the account name acquired, go get the auth token
Toast.makeText(this, mEmail, Toast.LENGTH_SHORT).show();
ConfirmEmailTask confirmEmailTask = new ConfirmEmailTask(this, SCOPE, mEmail);
confirmEmailTask.execute();
} else if (resultCode == RESULT_CANCELED) {
// The account picker dialog closed without selecting an account.
// Notify users that they must pick an account to proceed.
// Toast.makeText(this, R.string.pick_account, Toast.LENGTH_SHORT).show();
}
}
// Later, more code will go here to handle the result from some exceptions...
}
public class ConfirmEmailTask extends AsyncTask<Void, Void, String> {
Activity mActivity;
String mScope;
String mEmail;
ConfirmEmailTask(Activity activity, String name, String scope) {
this.mActivity = activity;
this.mScope = scope;
this.mEmail = name;
}
/**
* Executes the asynchronous job. This runs when you call execute()
* on the AsyncTask instance.
*/
#Override
protected String doInBackground(Void... params) {
try {
String token = fetchToken();
if (token != null) {
return token;
// Insert the good stuff here.
// Use the token to access the user's Google data.
// Toast.makeText(mActivity, token, Toast.LENGTH_SHORT).show();
}
} catch (IOException e) {
// The fetchToken() method handles Google-specific exceptions,
// so this indicates something went wrong at a higher level.
// TIP: Check for network connectivity before starting the AsyncTask.
}
return null;
}
/**
* Gets an authentication token from Google and handles any
* GoogleAuthException that may occur.
*/
protected String fetchToken() throws IOException {
try {
return GoogleAuthUtil.getToken(mActivity, mEmail, mScope);
} catch (UserRecoverableAuthException userRecoverableException) {
Log.d(TAG, "error");
// GooglePlayServices.apk is either old, disabled, or not present
// so we need to show the user some UI in the activity to recover.
// mActivity.handleException(userRecoverableException);
} catch (GoogleAuthException fatalException) {
// Some other type of unrecoverable exception has occurred.
// Report and log the error as appropriate for your app.
Log.d(TAG, fatalException.getMessage());
}
return null;
}
#Override
protected void onPostExecute(String result) {
Toast.makeText(mActivity, result, Toast.LENGTH_SHORT).show();
}
}
}
Below is the stacktrace.
W/System.err﹕ com.google.android.gms.auth.GoogleAuthException: BadUsername
W/System.err﹕ at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
W/System.err﹕ at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
W/System.err﹕ at dk.eterno.bloatwareremover.MainActivity$ConfirmEmailTask.fetchToken(MainActivity.java:138)
W/System.err﹕ at dk.eterno.bloatwareremover.MainActivity$ConfirmEmailTask.doInBackground(MainActivity.java:115)
W/System.err﹕ at dk.eterno.bloatwareremover.MainActivity$ConfirmEmailTask.doInBackground(MainActivity.java:97)
W/System.err﹕ at android.os.AsyncTask$2.call(AsyncTask.java:288)
W/System.err﹕ at java.util.concurrent.FutureTask.run(FutureTask.java:237)
W/System.err﹕ at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
W/System.err﹕ at java.lang.Thread.run(Thread.java:841)

Just for the record.
The problem here is that you are passing wrong the arguments in this:
ConfirmEmailTask confirmEmailTask = new ConfirmEmailTask(this, SCOPE, mEmail);
The class constructor is defined like
ConfirmEmailTask(Activity activity, String name, String scope) {
this.mActivity = activity;
this.mScope = scope;
this.mEmail = name;
}
So change the order of parameters in one of them.

Twitter OAuth issue: error 401

i am trying to get twitter work.
Error which i receive is:
Authorization failed (server replied with a 401). This can happen if the consumer key was not correct or the signatures did not match
I have already checked a lot of same issues here, on stackoverflow and here what i already tried:
1) checked consumer key (it is the same with that on dev.twitter.com)
2) added Callback URL for my app on dev.twitter.com
3) updated library to twitter-4j-core-3.0.5.jar
4) checked if time of my tablet is correct (set Eastern European Time)
Also i must say that some month ago Twitter in application worked properly. Then somehow it broke down.
Here is my code:
class GetOAuthVerifierTask extends AsyncTask<Void, Void, String> {
private Context context;
public GetOAuthVerifierTask(Context context) {
this.context = context;
dialog = ProgressDialog.show(TwitterActivity.this, getString(CANNOT_GET_REQUEST_TOKEN), null);
}
#Override
protected String doInBackground(Void... params) {
TwitterUtils twitterUtils = TwitterUtils.getInstance();
OAuthConsumer consumer = twitterUtils.createConsumer();
OAuthProvider provider = twitterUtils.createProvider();
try {
final String url = provider.retrieveRequestToken(consumer,
twitterUtils.getCallbackURL(context));
twitterUtils.setConsumerToken(context, consumer.getToken());
twitterUtils.setConsumerSekretToken(context, consumer.getTokenSecret());
return url;
} catch (Exception e) {
Logger.debug("Can not retrieve request token");
Logger.error(e.getMessage(), e);
return null;
}
}
#Override
protected void onPostExecute(String url) {
dialog.dismiss();
if (url != null){
// HERE IT WORKS CORRECT
web.loadUrl(url);
}
else{
Toast.makeText(TwitterActivity.this, getString(DOWNLOAD_WAIT_MESSAGE),
Toast.LENGTH_LONG).show();
}
}
}
class GetAccessTokenTask extends AsyncTask<Uri, Void, Boolean> {
#Override
protected void onPreExecute() {
dialog = ProgressDialog.show(TwitterActivity.this, getString(CANNOT_GET_REQUEST_TOKEN), null);
}
#Override
protected Boolean doInBackground(Uri... params) {
TwitterUtils twitterUtils = TwitterUtils.getInstance();
String oauthVerifier = params[0].getQueryParameter(OAuth.OAUTH_VERIFIER);
OAuthConsumer consumer = twitterUtils.createConsumer();
consumer.setTokenWithSecret(twitterUtils.getConsumerToken(TwitterActivity.this),
twitterUtils.getConsumerSekretToken(TwitterActivity.this));
OAuthProvider provider = twitterUtils.createProvider();
try {
provider.retrieveAccessToken(consumer, oauthVerifier);
twitterUtils.setAccessToken(TwitterActivity.this, consumer.getToken());
twitterUtils.setAccessTokenSecret(TwitterActivity.this, consumer.getTokenSecret());
} catch (Exception e) {
Logger.debug("Can not retrieve access token");
Logger.error(e.getMessage(), e);
return false;
}
return true;
}
#Override
protected void onPostExecute(Boolean result) {
dialog.dismiss();
if (result) {
TwitterActivity.this.sendMessage();
TwitterActivity.this.finish();
} else {
// HERE I GET 401
Toast.makeText(TwitterActivity.this, getString(DOWNLOAD_WAIT_MESSAGE),
Toast.LENGTH_LONG).show();
}
}
}

Just found the solution:
i added line
provider.setOAuth10a(true); (for my OAuthProvider)
The explanation was found in source code:
// 1.0a expects the callback to be sent while getting the request token.
// 1.0 service providers would simply ignore this parameter.

In the last month, has been a change to the Twitter API. You can now only call it using HTTPS.
You should ensure that the URL you / your library is using starts with
https://api.twitter.com/1.1/
(Notice the extra s after the http.)
You may need to check with the maintainer of twitter4j.

Android in-app billing - exception when pressing buy, and then pressing back from the purchase screen

When the user presses the buy button, they get taken to the android play screen to buy the in-app item. But when they press back, they get this exception about not being able to start the billing service:
java.lang.RuntimeException: Unable to start service com.problemio.BillingService#405704f0 with Intent { act=com.android.vending.billing.RESPONSE_CODE cmp=com.problemio/.BillingService (has extras) }: java.lang.NullPointerException
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2387)
at android.app.ActivityThread.access$2800(ActivityThread.java:132)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1111)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:4293)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.problemio.ExtraHelpActivity.prependLogEntry(ExtraHelpActivity.java:561)
at com.problemio.ExtraHelpActivity.logProductActivity(ExtraHelpActivity.java:569)
at com.problemio.ExtraHelpActivity.access$4(ExtraHelpActivity.java:565)
at com.problemio.ExtraHelpActivity$ExtraHelpPurchaseObserver.onRequestPurchaseResponse(ExtraHelpActivity.java:187)
at com.problemio.ResponseHandler.responseCodeReceived(ResponseHandler.java:137)
at com.problemio.BillingService$RequestPurchase.responseCodeReceived(BillingService.java:285)
at com.problemio.BillingService.checkResponseCode(BillingService.java:582)
at com.problemio.BillingService.handleCommand(BillingService.java:427)
at com.problemio.BillingService.onStart(BillingService.java:398)
at android.app.Service.onStartCommand(Service.java:428)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2370)
... 10 more
java.lang.NullPointerException
at com.problemio.ExtraHelpActivity.prependLogEntry(ExtraHelpActivity.java:561)
at com.problemio.ExtraHelpActivity.logProductActivity(ExtraHelpActivity.java:569)
at com.problemio.ExtraHelpActivity.access$4(ExtraHelpActivity.java:565)
at com.problemio.ExtraHelpActivity$ExtraHelpPurchaseObserver.onRequestPurchaseResponse(ExtraHelpActivity.java:187)
at com.problemio.ResponseHandler.responseCodeReceived(ResponseHandler.java:137)
at com.problemio.BillingService$RequestPurchase.responseCodeReceived(BillingService.java:285)
at com.problemio.BillingService.checkResponseCode(BillingService.java:582)
at com.problemio.BillingService.handleCommand(BillingService.java:427)
at com.problemio.BillingService.onStart(BillingService.java:398)
at android.app.Service.onStartCommand(Service.java:428)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2370)
at android.app.ActivityThread.access$2800(ActivityThread.java:132)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1111)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:4293)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
It specifically mentions these lines in my class:
Caused by:
java.lang.NullPointerException
at com.problemio.ExtraHelpActivity.prependLogEntry(ExtraHelpActivity.java:561)
at com.problemio.ExtraHelpActivity.logProductActivity(ExtraHelpActivity.java:569)
at com.problemio.ExtraHelpActivity.access$4(ExtraHelpActivity.java:565)
at com.problemio.ExtraHelpActivity$ExtraHelpPurchaseObserver.onRequestPurchaseResponse(ExtraHelpActivity.java:187)
on line 561 I have this code:
private void prependLogEntry(CharSequence cs) {
SpannableStringBuilder contents = new SpannableStringBuilder(cs);
contents.append('\n');
contents.append(mLogTextView.getText()); // Line 561
mLogTextView.setText(contents);
}
on line 569 I have this code:
private void logProductActivity(String product, String activity) {
SpannableStringBuilder contents = new SpannableStringBuilder();
contents.append(Html.fromHtml("<b>" + product + "</b>: "));
contents.append(activity);
prependLogEntry(contents); // Line 569
}
By the way, which log is this? Is it really needed? Maybe its worthwhile to comment out these methods?
In any case, the other line the error points to is 187 and here is the code for that:
#Override
public void onRequestPurchaseResponse(RequestPurchase request,
ResponseCode responseCode) {
if (Consts.DEBUG) {
Log.d(TAG, request.mProductId + ": " + responseCode);
}
if (responseCode == ResponseCode.RESULT_OK) {
if (Consts.DEBUG) {
Log.i(TAG, "purchase was successfully sent to server");
}
logProductActivity(request.mProductId, "sending purchase request");
} else if (responseCode == ResponseCode.RESULT_USER_CANCELED) {
if (Consts.DEBUG) {
Log.i(TAG, "user canceled purchase");
}
logProductActivity(request.mProductId, "dismissed purchase dialog");
// This is line 187 right above this comment.
} else {
if (Consts.DEBUG) {
Log.i(TAG, "purchase failed");
}
logProductActivity(request.mProductId, "request purchase returned " + responseCode);
}
}
So you see, it keeps having a problem on this logging thing. What is this log? Where can I see it? How can I fix it so it doesn't make errors?
I am not certain, but maybe the bigger issue is that request is null. Why would the request possibly be null here?
Here is the entire ExtraHelpActivity class:
public class ExtraHelpActivity extends BaseActivity implements ServiceConnection
{
// , OnClickListener
private static final String TAG = "Pay";
String issueProductIdWebMarketing = "1";
String issueProductIdDonate = "2";
String issueProductIdPsych = "3";
/**
* The developer payload that is sent with subsequent
* purchase requests.
*/
private String payloadContents = null;
/**
* Used for storing the log text.
*/
private static final String LOG_TEXT_KEY = "DUNGEONS_LOG_TEXT";
/**
* The SharedPreferences key for recording whether we initialized the
* database. If false, then we perform a RestoreTransactions request
* to get all the purchases for this user.
*/
private static final String DB_INITIALIZED = "db_initialized";
private ExtraHelpPurchaseObserver mExtraHelpPurchaseObserver;
private Handler mHandler;
private Handler handler;
private BillingService mBillingService;
private Button mBuyButton;
private Button mEditPayloadButton;
private Button mEditSubscriptionsButton;
private TextView mLogTextView;
private Spinner mSelectItemSpinner;
private ListView mOwnedItemsTable;
private SimpleCursorAdapter mOwnedItemsAdapter;
private PurchaseDatabase mPurchaseDatabase;
private Cursor mOwnedItemsCursor;
private Set<String> mOwnedItems = new HashSet<String>();
/**
* The developer payload that is sent with subsequent
* purchase requests.
*/
private String mPayloadContents = null;
private static final int DIALOG_CANNOT_CONNECT_ID = 1;
private static final int DIALOG_BILLING_NOT_SUPPORTED_ID = 2;
private static final int DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID = 3;
/**
* Each product in the catalog can be MANAGED, UNMANAGED, or SUBSCRIPTION. MANAGED
* means that the product can be purchased only once per user (such as a new
* level in a game). The purchase is remembered by Android Market and
* can be restored if this application is uninstalled and then
* re-installed. UNMANAGED is used for products that can be used up and
* purchased multiple times (such as poker chips). It is up to the
* application to keep track of UNMANAGED products for the user.
* SUBSCRIPTION is just like MANAGED except that the user gets charged monthly
* or yearly.
*/
private enum Managed { MANAGED, UNMANAGED, SUBSCRIPTION }
/**
* A {#link PurchaseObserver} is used to get callbacks when Android Market sends
* messages to this application so that we can update the UI.
*/
private class ExtraHelpPurchaseObserver extends PurchaseObserver {
public ExtraHelpPurchaseObserver(Handler handler) {
super(ExtraHelpActivity.this, handler);
}
#Override
public void onBillingSupported(boolean supported, String type) {
if (Consts.DEBUG) {
Log.i(TAG, "supported: " + supported);
}
if (type == null || type.equals(Consts.ITEM_TYPE_INAPP)) {
if (supported) {
restoreDatabase();
mBuyButton.setEnabled(true);
mEditPayloadButton.setEnabled(true);
} else {
showDialog(DIALOG_BILLING_NOT_SUPPORTED_ID);
}
} else if (type.equals(Consts.ITEM_TYPE_SUBSCRIPTION)) {
mCatalogAdapter.setSubscriptionsSupported(supported);
} else {
showDialog(DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID);
}
}
#Override
public void onPurchaseStateChange(PurchaseState purchaseState, String itemId,
int quantity, long purchaseTime, String developerPayload) {
if (Consts.DEBUG) {
Log.i(TAG, "onPurchaseStateChange() itemId: " + itemId + " " + purchaseState);
}
if (developerPayload == null) {
logProductActivity(itemId, purchaseState.toString());
} else {
logProductActivity(itemId, purchaseState + "\n\t" + developerPayload);
}
if (purchaseState == PurchaseState.PURCHASED) {
mOwnedItems.add(itemId);
// If this is a subscription, then enable the "Edit
// Subscriptions" button.
for (CatalogEntry e : CATALOG) {
if (e.sku.equals(itemId) &&
e.managed.equals(Managed.SUBSCRIPTION)) {
mEditSubscriptionsButton.setVisibility(View.VISIBLE);
}
}
}
mCatalogAdapter.setOwnedItems(mOwnedItems);
mOwnedItemsCursor.requery();
}
#Override
public void onRequestPurchaseResponse(RequestPurchase request,
ResponseCode responseCode) {
if (Consts.DEBUG) {
Log.d(TAG, request.mProductId + ": " + responseCode);
}
if (responseCode == ResponseCode.RESULT_OK) {
if (Consts.DEBUG) {
Log.i(TAG, "purchase was successfully sent to server");
}
logProductActivity(request.mProductId, "sending purchase request");
} else if (responseCode == ResponseCode.RESULT_USER_CANCELED) {
if (Consts.DEBUG) {
Log.i(TAG, "user canceled purchase");
}
logProductActivity(request.mProductId, "dismissed purchase dialog");
} else {
if (Consts.DEBUG) {
Log.i(TAG, "purchase failed");
}
logProductActivity(request.mProductId, "request purchase returned " + responseCode);
}
}
#Override
public void onRestoreTransactionsResponse(RestoreTransactions request,
ResponseCode responseCode) {
if (responseCode == ResponseCode.RESULT_OK) {
if (Consts.DEBUG) {
Log.d(TAG, "completed RestoreTransactions request");
}
// Update the shared preferences so that we don't perform
// a RestoreTransactions again.
SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor edit = prefs.edit();
edit.putBoolean(DB_INITIALIZED, true);
edit.commit();
} else {
if (Consts.DEBUG) {
Log.d(TAG, "RestoreTransactions error: " + responseCode);
}
}
}
}
private static class CatalogEntry {
public String sku;
public int nameId;
public Managed managed;
public CatalogEntry(String sku, int nameId, Managed managed) {
this.sku = sku;
this.nameId = nameId;
this.managed = managed;
}
}
/** An array of product list entries for the products that can be purchased. */
private static final CatalogEntry[] CATALOG = new CatalogEntry[] {
new CatalogEntry("marketing_001", 1 , Managed.MANAGED),
new CatalogEntry("potion_001", 2 , Managed.UNMANAGED),
new CatalogEntry("subscription_monthly", 3,
Managed.SUBSCRIPTION),
new CatalogEntry("subscription_yearly", 4 ,
Managed.SUBSCRIPTION)
};
private String mItemName;
private String mSku;
private Managed mManagedType;
private CatalogAdapter mCatalogAdapter;
//outside onCreate() Within class
// public Handler mTransactionHandler = new Handler(){
// public void handleMessage(android.os.Message msg) {
// Log.i(TAG, "Transaction complete");
// Log.i(TAG, "Transaction status: "+BillingHelper.latestPurchase.purchaseState);
// Log.i(TAG, "Item purchased is: "+BillingHelper.latestPurchase.productId);
//
// if(BillingHelper.latestPurchase.isPurchased()){
// //code here which is to be performed after successful purchase
// }
// };
//
// };
// TODO:
// TODO:
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.extra_help);
//Now setup the in-app billing</pre>
handler = new Handler();
mExtraHelpPurchaseObserver = new ExtraHelpPurchaseObserver(handler);
mBillingService = new BillingService();
mBillingService.setContext(this);
mPurchaseDatabase = new PurchaseDatabase(this);
ResponseHandler.register(mExtraHelpPurchaseObserver);
//Check if billing is supported. (Optional)
//boolean check = mBillingService.checkBillingSupported();
// startService(new Intent(mContext, BillingService.class));
// BillingHelper.setCompletedHandler(mTransactionHandler);
// Make sure the user is logged in
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences( ExtraHelpActivity.this);
final String user_id = prefs.getString( "user_id" , null );
Button donate = (Button)findViewById(R.id.donate);
donate.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
// Send me an email that a comment was submitted on a question.
// boolean val = mBillingService.requestPurchase(
// "android.test.purchased", payloadContents);
//Replace "android.test.purchased" with your product ID that you added to Google Play or make it a variable that is populated from a list.
//Place this code in a button event or where ever it fits in your process flow.
if (mBillingService.requestPurchase(issueProductIdDonate, Consts.ITEM_TYPE_INAPP , null))
{
}
else
{
Log.i("tag", "Can't purchase on this device");
}
}
});
try
{
boolean bindResult = bindService(
new Intent("com.android.vending.billing.MarketBillingService.BIND"),
this,
Context.BIND_AUTO_CREATE);
if (bindResult)
{
Log.i( "Err" , "Service bind successful.");
}
else
{
Log.e( "Err", "Could not bind to the MarketBillingService.");
}
}
catch (SecurityException e)
{
Log.e( "Err" , "Security exception: " + e);
}
}
/**
* Save the context of the log so simple things like rotation will not
* result in the log being cleared.
*/
#Override
protected void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
//outState.putString(LOG_TEXT_KEY, Html.toHtml((Spanned) mLogTextView.getText()));
}
/**
* Restore the contents of the log if it has previously been saved.
*/
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
if (savedInstanceState != null)
{
//mLogTextView.setText(Html.fromHtml(savedInstanceState.getString(LOG_TEXT_KEY)));
}
}
#Override
protected Dialog onCreateDialog(int id)
{
switch (id)
{
case DIALOG_CANNOT_CONNECT_ID:
return createDialog(1,1);
case DIALOG_BILLING_NOT_SUPPORTED_ID:
return createDialog(2,2);
case DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID:
return createDialog(3,3);
// case DIALOG_CANNOT_CONNECT_ID:
// return createDialog(R.string.cannot_connect_title,
// R.string.cannot_connect_message);
// case DIALOG_BILLING_NOT_SUPPORTED_ID:
// return createDialog(R.string.billing_not_supported_title,
// R.string.billing_not_supported_message);
// case DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID:
// return createDialog(R.string.subscriptions_not_supported_title,
// R.string.subscriptions_not_supported_message);
default:
return null;
}
}
private Dialog createDialog(int titleId, int messageId) {
String helpUrl = replaceLanguageAndRegion("help_url");
if (Consts.DEBUG) {
Log.i(TAG, helpUrl);
}
final Uri helpUri = Uri.parse(helpUrl);
// TODO: replace 1 with the thing its supposed to be - I think learn more url :)
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(titleId)
.setIcon(android.R.drawable.stat_sys_warning)
.setMessage(messageId)
.setCancelable(false)
.setPositiveButton(android.R.string.ok, null)
.setNegativeButton(1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Intent.ACTION_VIEW, helpUri);
startActivity(intent);
}
});
return builder.create();
}
/**
* Replaces the language and/or country of the device into the given string.
* The pattern "%lang%" will be replaced by the device's language code and
* the pattern "%region%" will be replaced with the device's country code.
*
* #param str the string to replace the language/country within
* #return a string containing the local language and region codes
*/
private String replaceLanguageAndRegion(String str) {
// Substitute language and or region if present in string
if (str.contains("%lang%") || str.contains("%region%")) {
Locale locale = Locale.getDefault();
str = str.replace("%lang%", locale.getLanguage().toLowerCase());
str = str.replace("%region%", locale.getCountry().toLowerCase());
}
return str;
}
/**
* Sets up the UI.
*/
private void setupWidgets()
{
mOwnedItemsCursor = mPurchaseDatabase.queryAllPurchasedItems();
startManagingCursor(mOwnedItemsCursor);
String[] from = new String[] { PurchaseDatabase.PURCHASED_PRODUCT_ID_COL,
PurchaseDatabase.PURCHASED_QUANTITY_COL
};
// int[] to = new int[] { R.id.item_name, R.id.item_quantity };
// mOwnedItemsAdapter = new SimpleCursorAdapter(this, R.layout.item_row,
// mOwnedItemsCursor, from, to);
// mOwnedItemsTable = (ListView) findViewById(R.id.owned_items);
// mOwnedItemsTable.setAdapter(mOwnedItemsAdapter);
}
private void prependLogEntry(CharSequence cs) {
SpannableStringBuilder contents = new SpannableStringBuilder(cs);
contents.append('\n');
contents.append(mLogTextView.getText());
mLogTextView.setText(contents);
}
private void logProductActivity(String product, String activity) {
SpannableStringBuilder contents = new SpannableStringBuilder();
contents.append(Html.fromHtml("<b>" + product + "</b>: "));
contents.append(activity);
prependLogEntry(contents);
}
/**
* If the database has not been initialized, we send a
* RESTORE_TRANSACTIONS request to Android Market to get the list of purchased items
* for this user. This happens if the application has just been installed
* or the user wiped data. We do not want to do this on every startup, rather, we want to do
* only when the database needs to be initialized.
*/
private void restoreDatabase() {
SharedPreferences prefs = getPreferences(MODE_PRIVATE);
boolean initialized = prefs.getBoolean(DB_INITIALIZED, false);
if (!initialized) {
mBillingService.restoreTransactions();
Toast.makeText(this, 3, Toast.LENGTH_LONG).show();
// Used to be R.string.restoring_transactions instead of 3
}
}
/**
* Creates a background thread that reads the database and initializes the
* set of owned items.
*/
private void initializeOwnedItems() {
new Thread(new Runnable() {
public void run() {
doInitializeOwnedItems();
}
}).start();
}
/**
* Reads the set of purchased items from the database in a background thread
* and then adds those items to the set of owned items in the main UI
* thread.
*/
private void doInitializeOwnedItems() {
Cursor cursor = mPurchaseDatabase.queryAllPurchasedItems();
if (cursor == null) {
return;
}
final Set<String> ownedItems = new HashSet<String>();
try {
int productIdCol = cursor.getColumnIndexOrThrow(
PurchaseDatabase.PURCHASED_PRODUCT_ID_COL);
while (cursor.moveToNext()) {
String productId = cursor.getString(productIdCol);
ownedItems.add(productId);
}
} finally {
cursor.close();
}
// We will add the set of owned items in a new Runnable that runs on
// the UI thread so that we don't need to synchronize access to
// mOwnedItems.
mHandler.post(new Runnable() {
public void run() {
mOwnedItems.addAll(ownedItems);
mCatalogAdapter.setOwnedItems(mOwnedItems);
}
});
}
/**
* Called when a button is pressed.
*/
public void onClick(View v) {
if (v == mBuyButton) {
if (Consts.DEBUG) {
Log.d(TAG, "buying: " + mItemName + " sku: " + mSku);
}
if (mManagedType != Managed.SUBSCRIPTION &&
!mBillingService.requestPurchase(mSku, Consts.ITEM_TYPE_INAPP, mPayloadContents)) {
showDialog(DIALOG_BILLING_NOT_SUPPORTED_ID);
} else if (!mBillingService.requestPurchase(mSku, Consts.ITEM_TYPE_SUBSCRIPTION, mPayloadContents)) {
// Note: mManagedType == Managed.SUBSCRIPTION
showDialog(DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID);
}
} else if (v == mEditPayloadButton) {
showPayloadEditDialog();
} else if (v == mEditSubscriptionsButton) {
editSubscriptions();
}
}
/** List subscriptions for this package in Google Play
*
* This allows users to unsubscribe from this apps subscriptions.
*
* Subscriptions are listed on the Google Play app detail page, so this
* should only be called if subscriptions are known to be present.
*/
private void editSubscriptions() {
// Get current package name
String packageName = getPackageName();
// Open app detail in Google Play
Intent i = new Intent(Intent.ACTION_VIEW,
Uri.parse("market://details?id=" + packageName));
startActivity(i);
}
/**
* Displays the dialog used to edit the payload dialog.
*/
private void showPayloadEditDialog()
{
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
final View view = View.inflate(this, R.layout.edit_payload, null);
final TextView payloadText = (TextView) view.findViewById(R.id.payload_text);
if (mPayloadContents != null) {
payloadText.setText(mPayloadContents);
}
dialog.setView(view);
dialog.setPositiveButton(
R.string.edit_payload_accept,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
mPayloadContents = payloadText.getText().toString();
}
});
dialog.setNegativeButton(
R.string.edit_payload_clear,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (dialog != null) {
mPayloadContents = null;
dialog.cancel();
}
}
});
dialog.setOnCancelListener(new DialogInterface.OnCancelListener(

oops.
mLogTextView is never initialised.
add mLogTextView = findViewById(R.id.blaaa);
I am sure you already know that
please tell me if i am wrong so that I delete this answer (:

Are you give permission in menifest file?
<uses-permission android:name="com.android.vending.BILLING" />

I am adding an answer because I reached the character limit in my original question since my class is so long.
This is the extra_help.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<include android:id="#+id/header"
layout="#layout/header"
android:layout_height="wrap_content"
android:layout_width="fill_parent"/>
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5px">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5px"
>
<TextView
android:id="#+id/heading_1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#color/light_best_blue"
android:text="THE APP IS FREE TO HELP AS MANY PEOPLE AS POSSIBLE, PLEASE GIVE BACK"
/>
<Button
android:id="#+id/donate"
android:layout_marginTop ="10dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Donate $1.99 Since the App is Free"
/>
</LinearLayout>
</ScrollView>
</LinearLayout>