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/** * AirProbe//from w ww .j av a 2 s.c o m * Air quality application for Android, developed as part of * EveryAware project (<http://www.everyaware.eu>). * * Copyright (C) 2014 CSP Innovazione nelle ICT. All rights reserved. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * For any inquiry please write to <devel@csp.it> * * CONTRIBUTORS * * This program was made with the contribution of: * Fabio Saracino <fabio.saracino@csp.it> * Patrick Facco <patrick.facco@csp.it> * * * SOURCE CODE * * The source code of this program is available at * <https://github.com/CSPICT/airprobe> */ /* * Copyright 2010 Facebook, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.csp.everyaware.facebooksdk; import java.io.FileNotFoundException; import java.io.IOException; import java.net.MalformedURLException; import android.Manifest; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.pm.Signature; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.os.Messenger; import android.os.RemoteException; import android.text.TextUtils; import android.webkit.CookieSyncManager; /** * Main Facebook object for interacting with the Facebook developer API. * Provides methods to log in and log out a user, make requests using the REST * and Graph APIs, and start user interface interactions with the API (such as * pop-ups promoting for credentials, permissions, stream posts, etc.) * * @author Jim Brusstar (jimbru@facebook.com), * Yariv Sadan (yariv@facebook.com), * Luke Shepard (lshepard@facebook.com) */ public class Facebook { // Strings used in the authorization flow public static final String REDIRECT_URI = "fbconnect://success"; public static final String CANCEL_URI = "fbconnect://cancel"; public static final String TOKEN = "access_token"; public static final String EXPIRES = "expires_in"; public static final String SINGLE_SIGN_ON_DISABLED = "service_disabled"; public static final int FORCE_DIALOG_AUTH = -1; private static final String LOGIN = "oauth"; // Used as default activityCode by authorize(). See authorize() below. private static final int DEFAULT_AUTH_ACTIVITY_CODE = 32665; // Facebook server endpoints: may be modified in a subclass for testing protected static String DIALOG_BASE_URL = "https://m.facebook.com/dialog/"; protected static String GRAPH_BASE_URL = "https://graph.facebook.com/"; protected static String RESTSERVER_URL = "https://api.facebook.com/restserver.php"; private String mAccessToken = null; private long mLastAccessUpdate = 0; private long mAccessExpires = 0; private String mAppId; private Activity mAuthActivity; private String[] mAuthPermissions; private int mAuthActivityCode; private DialogListener mAuthDialogListener; // If the last time we extended the access token was more than 24 hours ago // we try to refresh the access token again. final private long REFRESH_TOKEN_BARRIER = 24L * 60L * 60L * 1000L; /** * Constructor for Facebook object. * * @param appId * Your Facebook application ID. Found at * www.facebook.com/developers/apps.php. */ public Facebook(String appId) { if (appId == null) { throw new IllegalArgumentException( "You must specify your application ID when instantiating " + "a Facebook object. See README for details."); } mAppId = appId; } /** * Default authorize method. Grants only basic permissions. * * See authorize() below for @params. */ public void authorize(Activity activity, final DialogListener listener) { authorize(activity, new String[] {}, DEFAULT_AUTH_ACTIVITY_CODE, listener); } /** * Authorize method that grants custom permissions. * * See authorize() below for @params. */ public void authorize(Activity activity, String[] permissions, final DialogListener listener) { authorize(activity, permissions, DEFAULT_AUTH_ACTIVITY_CODE, listener); } /** * Full authorize method. * * Starts either an Activity or a dialog which prompts the user to log in to * Facebook and grant the requested permissions to the given application. * * This method will, when possible, use Facebook's single sign-on for * Android to obtain an access token. This involves proxying a call through * the Facebook for Android stand-alone application, which will handle the * authentication flow, and return an OAuth access token for making API * calls. * * Because this process will not be available for all users, if single * sign-on is not possible, this method will automatically fall back to the * OAuth 2.0 User-Agent flow. In this flow, the user credentials are handled * by Facebook in an embedded WebView, not by the client application. As * such, the dialog makes a network request and renders HTML content rather * than a native UI. The access token is retrieved from a redirect to a * special URL that the WebView handles. * * Note that User credentials could be handled natively using the OAuth 2.0 * Username and Password Flow, but this is not supported by this SDK. * * See http://developers.facebook.com/docs/authentication/ and * http://wiki.oauth.net/OAuth-2 for more details. * * Note that this method is asynchronous and the callback will be invoked in * the original calling thread (not in a background thread). * * Also note that requests may be made to the API without calling authorize * first, in which case only public information is returned. * * IMPORTANT: Note that single sign-on authentication will not function * correctly if you do not include a call to the authorizeCallback() method * in your onActivityResult() function! Please see below for more * information. single sign-on may be disabled by passing FORCE_DIALOG_AUTH * as the activityCode parameter in your call to authorize(). * * @param activity * The Android activity in which we want to display the * authorization dialog. * @param applicationId * The Facebook application identifier e.g. "350685531728" * @param permissions * A list of permissions required for this application: e.g. * "read_stream", "publish_stream", "offline_access", etc. see * http://developers.facebook.com/docs/authentication/permissions * This parameter should not be null -- if you do not require any * permissions, then pass in an empty String array. * @param activityCode * Single sign-on requires an activity result to be called back * to the client application -- if you are waiting on other * activities to return data, pass a custom activity code here to * avoid collisions. If you would like to force the use of legacy * dialog-based authorization, pass FORCE_DIALOG_AUTH for this * parameter. Otherwise just omit this parameter and Facebook * will use a suitable default. See * http://developer.android.com/reference/android/ * app/Activity.html for more information. * @param listener * Callback interface for notifying the calling application when * the authentication dialog has completed, failed, or been * canceled. */ public void authorize(Activity activity, String[] permissions, int activityCode, final DialogListener listener) { boolean singleSignOnStarted = false; mAuthDialogListener = listener; // Prefer single sign-on, where available. if (activityCode >= 0) { singleSignOnStarted = startSingleSignOn(activity, mAppId, permissions, activityCode); } // Otherwise fall back to traditional dialog. if (!singleSignOnStarted) { startDialogAuth(activity, permissions); } } /** * Internal method to handle single sign-on backend for authorize(). * * @param activity * The Android Activity that will parent the ProxyAuth Activity. * @param applicationId * The Facebook application identifier. * @param permissions * A list of permissions required for this application. If you do * not require any permissions, pass an empty String array. * @param activityCode * Activity code to uniquely identify the result Intent in the * callback. */ private boolean startSingleSignOn(Activity activity, String applicationId, String[] permissions, int activityCode) { boolean didSucceed = true; Intent intent = new Intent(); intent.setClassName("com.facebook.katana", "com.facebook.katana.ProxyAuth"); intent.putExtra("client_id", applicationId); if (permissions.length > 0) { intent.putExtra("scope", TextUtils.join(",", permissions)); } // Verify that the application whose package name is // com.facebook.katana.ProxyAuth // has the expected FB app signature. if (!validateActivityIntent(activity, intent)) { return false; } mAuthActivity = activity; mAuthPermissions = permissions; mAuthActivityCode = activityCode; try { activity.startActivityForResult(intent, activityCode); } catch (ActivityNotFoundException e) { didSucceed = false; } return didSucceed; } /** * Helper to validate an activity intent by resolving and checking the * provider's package signature. * * @param context * @param intent * @return true if the service intent resolution happens successfully and the * signatures match. */ private boolean validateActivityIntent(Context context, Intent intent) { ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent, 0); if (resolveInfo == null) { return false; } return validateAppSignatureForPackage( context, resolveInfo.activityInfo.packageName); } /** * Helper to validate a service intent by resolving and checking the * provider's package signature. * * @param context * @param intent * @return true if the service intent resolution happens successfully and the * signatures match. */ private boolean validateServiceIntent(Context context, Intent intent) { ResolveInfo resolveInfo = context.getPackageManager().resolveService(intent, 0); if (resolveInfo == null) { return false; } return validateAppSignatureForPackage( context, resolveInfo.serviceInfo.packageName); } /** * Query the signature for the application that would be invoked by the * given intent and verify that it matches the FB application's signature. * * @param context * @param packageName * @return true if the app's signature matches the expected signature. */ private boolean validateAppSignatureForPackage(Context context, String packageName) { PackageInfo packageInfo; try { packageInfo = context.getPackageManager().getPackageInfo( packageName, PackageManager.GET_SIGNATURES); } catch (NameNotFoundException e) { return false; } for (Signature signature : packageInfo.signatures) { if (signature.toCharsString().equals(FB_APP_SIGNATURE)) { return true; } } return false; } /** * Internal method to handle dialog-based authentication backend for * authorize(). * * @param activity * The Android Activity that will parent the auth dialog. * @param applicationId * The Facebook application identifier. * @param permissions * A list of permissions required for this application. If you do * not require any permissions, pass an empty String array. */ private void startDialogAuth(Activity activity, String[] permissions) { Bundle params = new Bundle(); if (permissions.length > 0) { params.putString("scope", TextUtils.join(",", permissions)); } CookieSyncManager.createInstance(activity); dialog(activity, LOGIN, params, new DialogListener() { public void onComplete(Bundle values) { // ensure any cookies set by the dialog are saved CookieSyncManager.getInstance().sync(); setAccessToken(values.getString(TOKEN)); setAccessExpiresIn(values.getString(EXPIRES)); if (isSessionValid()) { Util.logd("Facebook-authorize", "Login Success! access_token=" + getAccessToken() + " expires=" + getAccessExpires()); mAuthDialogListener.onComplete(values); } else { mAuthDialogListener.onFacebookError(new FacebookError( "Failed to receive access token.")); } } public void onError(DialogError error) { Util.logd("Facebook-authorize", "Login failed: " + error); mAuthDialogListener.onError(error); } public void onFacebookError(FacebookError error) { Util.logd("Facebook-authorize", "Login failed: " + error); mAuthDialogListener.onFacebookError(error); } public void onCancel() { Util.logd("Facebook-authorize", "Login canceled"); mAuthDialogListener.onCancel(); } }); } /** * IMPORTANT: This method must be invoked at the top of the calling * activity's onActivityResult() function or Facebook authentication will * not function properly! * * If your calling activity does not currently implement onActivityResult(), * you must implement it and include a call to this method if you intend to * use the authorize() method in this SDK. * * For more information, see * http://developer.android.com/reference/android/app/ * Activity.html#onActivityResult(int, int, android.content.Intent) */ public void authorizeCallback(int requestCode, int resultCode, Intent data) { if (requestCode == mAuthActivityCode) { // Successfully redirected. if (resultCode == Activity.RESULT_OK) { // Check OAuth 2.0/2.10 error code. String error = data.getStringExtra("error"); if (error == null) { error = data.getStringExtra("error_type"); } // A Facebook error occurred. if (error != null) { if (error.equals(SINGLE_SIGN_ON_DISABLED) || error.equals("AndroidAuthKillSwitchException")) { Util.logd("Facebook-authorize", "Hosted auth currently " + "disabled. Retrying dialog auth..."); startDialogAuth(mAuthActivity, mAuthPermissions); } else if (error.equals("access_denied") || error.equals("OAuthAccessDeniedException")) { Util.logd("Facebook-authorize", "Login canceled by user."); mAuthDialogListener.onCancel(); } else { String description = data.getStringExtra("error_description"); if (description != null) { error = error + ":" + description; } Util.logd("Facebook-authorize", "Login failed: " + error); mAuthDialogListener.onFacebookError( new FacebookError(error)); } // No errors. } else { setAccessToken(data.getStringExtra(TOKEN)); setAccessExpiresIn(data.getStringExtra(EXPIRES)); if (isSessionValid()) { Util.logd("Facebook-authorize", "Login Success! access_token=" + getAccessToken() + " expires=" + getAccessExpires()); mAuthDialogListener.onComplete(data.getExtras()); } else { mAuthDialogListener.onFacebookError(new FacebookError( "Failed to receive access token.")); } } // An error occurred before we could be redirected. } else if (resultCode == Activity.RESULT_CANCELED) { // An Android error occured. if (data != null) { Util.logd("Facebook-authorize", "Login failed: " + data.getStringExtra("error")); mAuthDialogListener.onError( new DialogError( data.getStringExtra("error"), data.getIntExtra("error_code", -1), data.getStringExtra("failing_url"))); // User pressed the 'back' button. } else { Util.logd("Facebook-authorize", "Login canceled by user."); mAuthDialogListener.onCancel(); } } } } /** * Refresh OAuth access token method. Binds to Facebook for Android * stand-alone application application to refresh the access token. This * method tries to connect to the Facebook App which will handle the * authentication flow, and return a new OAuth access token. This method * will automatically replace the old token with a new one. Note that this * method is asynchronous and the callback will be invoked in the original * calling thread (not in a background thread). * * @param context * The Android Context that will be used to bind to the Facebook * RefreshToken Service * @param serviceListener * Callback interface for notifying the calling application when * the refresh request has completed or failed (can be null). In * case of a success a new token can be found inside the result * Bundle under Facebook.ACCESS_TOKEN key. * @return true if the binding to the RefreshToken Service was created */ public boolean extendAccessToken(Context context, ServiceListener serviceListener) { Intent intent = new Intent(); intent.setClassName("com.facebook.katana", "com.facebook.katana.platform.TokenRefreshService"); // Verify that the application whose package name is // com.facebook.katana // has the expected FB app signature. if (!validateServiceIntent(context, intent)) { return false; } return context.bindService(intent, new TokenRefreshServiceConnection(context, serviceListener), Context.BIND_AUTO_CREATE); } /** * Calls extendAccessToken if shouldExtendAccessToken returns true. * * @return the same value as extendAccessToken if the the token requires * refreshing, true otherwise */ public boolean extendAccessTokenIfNeeded(Context context, ServiceListener serviceListener) { if (shouldExtendAccessToken()) { return extendAccessToken(context, serviceListener); } return true; } /** * Check if the access token requires refreshing. * * @return true if the last time a new token was obtained was over 24 hours ago. */ public boolean shouldExtendAccessToken() { return isSessionValid() && (System.currentTimeMillis() - mLastAccessUpdate >= REFRESH_TOKEN_BARRIER); } /** * Handles connection to the token refresh service (this service is a part * of Facebook App). */ private class TokenRefreshServiceConnection implements ServiceConnection { final Messenger messageReceiver = new Messenger(new Handler() { @Override public void handleMessage(Message msg) { String token = msg.getData().getString(TOKEN); long expiresAt = msg.getData().getLong(EXPIRES) * 1000L; // To avoid confusion we should return the expiration time in // the same format as the getAccessExpires() function - that // is in milliseconds. Bundle resultBundle = (Bundle) msg.getData().clone(); resultBundle.putLong(EXPIRES, expiresAt); if (token != null) { setAccessToken(token); setAccessExpires(expiresAt); if (serviceListener != null) { serviceListener.onComplete(resultBundle); } } else if (serviceListener != null) { // extract errors only if client wants them String error = msg.getData().getString("error"); if (msg.getData().containsKey("error_code")) { int errorCode = msg.getData().getInt("error_code"); serviceListener.onFacebookError(new FacebookError(error, null, errorCode)); } else { serviceListener.onError(new Error(error != null ? error : "Unknown service error")); } } // The refreshToken function should be called rarely, // so there is no point in keeping the binding open. applicationsContext.unbindService(TokenRefreshServiceConnection.this); } }); final ServiceListener serviceListener; final Context applicationsContext; Messenger messageSender = null; public TokenRefreshServiceConnection(Context applicationsContext, ServiceListener serviceListener) { this.applicationsContext = applicationsContext; this.serviceListener = serviceListener; } @Override public void onServiceConnected(ComponentName className, IBinder service) { messageSender = new Messenger(service); refreshToken(); } @Override public void onServiceDisconnected(ComponentName arg) { serviceListener.onError(new Error("Service disconnected")); // We returned an error so there's no point in // keeping the binding open. applicationsContext.unbindService(TokenRefreshServiceConnection.this); } private void refreshToken() { Bundle requestData = new Bundle(); requestData.putString(TOKEN, mAccessToken); Message request = Message.obtain(); request.setData(requestData); request.replyTo = messageReceiver; try { messageSender.send(request); } catch (RemoteException e) { serviceListener.onError(new Error("Service connection error")); } } }; /** * Invalidate the current user session by removing the access token in * memory, clearing the browser cookie, and calling auth.expireSession * through the API. * * Note that this method blocks waiting for a network response, so do not * call it in a UI thread. * * @param context * The Android context in which the logout should be called: it * should be the same context in which the login occurred in * order to clear any stored cookies * @throws IOException * @throws MalformedURLException * @return JSON string representation of the auth.expireSession response * ("true" if successful) */ public String logout(Context context) throws MalformedURLException, IOException { Util.clearCookies(context); Bundle b = new Bundle(); b.putString("method", "auth.expireSession"); String response = request(b); setAccessToken(null); setAccessExpires(0); return response; } /** * Make a request to Facebook's old (pre-graph) API with the given * parameters. One of the parameter keys must be "method" and its value * should be a valid REST server API method. * * See http://developers.facebook.com/docs/reference/rest/ * * Note that this method blocks waiting for a network response, so do not * call it in a UI thread. * * Example: * <code> * Bundle parameters = new Bundle(); * parameters.putString("method", "auth.expireSession"); * String response = request(parameters); * </code> * * @param parameters * Key-value pairs of parameters to the request. Refer to the * documentation: one of the parameters must be "method". * @throws IOException * if a network error occurs * @throws MalformedURLException * if accessing an invalid endpoint * @throws IllegalArgumentException * if one of the parameters is not "method" * @return JSON string representation of the response */ public String request(Bundle parameters) throws MalformedURLException, IOException { if (!parameters.containsKey("method")) { throw new IllegalArgumentException("API method must be specified. " + "(parameters must contain key \"method\" and value). See" + " http://developers.facebook.com/docs/reference/rest/"); } return request(null, parameters, "GET"); } /** * Make a request to the Facebook Graph API without any parameters. * * See http://developers.facebook.com/docs/api * * Note that this method blocks waiting for a network response, so do not * call it in a UI thread. * * @param graphPath * Path to resource in the Facebook graph, e.g., to fetch data * about the currently logged authenticated user, provide "me", * which will fetch http://graph.facebook.com/me * @throws IOException * @throws MalformedURLException * @return JSON string representation of the response */ public String request(String graphPath) throws MalformedURLException, IOException { return request(graphPath, new Bundle(), "GET"); } /** * Make a request to the Facebook Graph API with the given string parameters * using an HTTP GET (default method). * * See http://developers.facebook.com/docs/api * * Note that this method blocks waiting for a network response, so do not * call it in a UI thread. * * @param graphPath * Path to resource in the Facebook graph, e.g., to fetch data * about the currently logged authenticated user, provide "me", * which will fetch http://graph.facebook.com/me * @param parameters * key-value string parameters, e.g. the path "search" with * parameters "q" : "facebook" would produce a query for the * following graph resource: * https://graph.facebook.com/search?q=facebook * @throws IOException * @throws MalformedURLException * @return JSON string representation of the response */ public String request(String graphPath, Bundle parameters) throws MalformedURLException, IOException { return request(graphPath, parameters, "GET"); } /** * Synchronously make a request to the Facebook Graph API with the given * HTTP method and string parameters. Note that binary data parameters * (e.g. pictures) are not yet supported by this helper function. * * See http://developers.facebook.com/docs/api * * Note that this method blocks waiting for a network response, so do not * call it in a UI thread. * * @param graphPath * Path to resource in the Facebook graph, e.g., to fetch data * about the currently logged authenticated user, provide "me", * which will fetch http://graph.facebook.com/me * @param params * Key-value string parameters, e.g. the path "search" with * parameters {"q" : "facebook"} would produce a query for the * following graph resource: * https://graph.facebook.com/search?q=facebook * @param httpMethod * http verb, e.g. "GET", "POST", "DELETE" * @throws IOException * @throws MalformedURLException * @return JSON string representation of the response */ public String request(String graphPath, Bundle params, String httpMethod) throws FileNotFoundException, MalformedURLException, IOException { params.putString("format", "json"); if (isSessionValid()) { params.putString(TOKEN, getAccessToken()); } String url = (graphPath != null) ? GRAPH_BASE_URL + graphPath : RESTSERVER_URL; return Util.openUrl(url, httpMethod, params); } /** * Generate a UI dialog for the request action in the given Android context. * * Note that this method is asynchronous and the callback will be invoked in * the original calling thread (not in a background thread). * * @param context * The Android context in which we will generate this dialog. * @param action * String representation of the desired method: e.g. "login", * "stream.publish", ... * @param listener * Callback interface to notify the application when the dialog * has completed. */ public void dialog(Context context, String action, DialogListener listener) { dialog(context, action, new Bundle(), listener); } /** * Generate a UI dialog for the request action in the given Android context * with the provided parameters. * * Note that this method is asynchronous and the callback will be invoked in * the original calling thread (not in a background thread). * * @param context * The Android context in which we will generate this dialog. * @param action * String representation of the desired method: e.g. "feed" ... * @param parameters * String key-value pairs to be passed as URL parameters. * @param listener * Callback interface to notify the application when the dialog * has completed. */ public void dialog(Context context, String action, Bundle parameters, final DialogListener listener) { String endpoint = DIALOG_BASE_URL + action; parameters.putString("display", "touch"); parameters.putString("redirect_uri", REDIRECT_URI); if (action.equals(LOGIN)) { parameters.putString("type", "user_agent"); parameters.putString("client_id", mAppId); } else { parameters.putString("app_id", mAppId); } if (isSessionValid()) { parameters.putString(TOKEN, getAccessToken()); } String url = endpoint + "?" + Util.encodeUrl(parameters); if (context.checkCallingOrSelfPermission(Manifest.permission.INTERNET) != PackageManager.PERMISSION_GRANTED) { Util.showAlert(context, "Error", "Application requires permission to access the Internet"); } else { new FbDialog(context, url, listener).show(); } } /** * @return boolean - whether this object has an non-expired session token */ public boolean isSessionValid() { return (getAccessToken() != null) && ((getAccessExpires() == 0) || (System.currentTimeMillis() < getAccessExpires())); } /** * Retrieve the OAuth 2.0 access token for API access: treat with care. * Returns null if no session exists. * * @return String - access token */ public String getAccessToken() { return mAccessToken; } /** * Retrieve the current session's expiration time (in milliseconds since * Unix epoch), or 0 if the session doesn't expire or doesn't exist. * * @return long - session expiration time */ public long getAccessExpires() { return mAccessExpires; } /** * Set the OAuth 2.0 access token for API access. * * @param token - access token */ public void setAccessToken(String token) { mAccessToken = token; mLastAccessUpdate = System.currentTimeMillis(); } /** * Set the current session's expiration time (in milliseconds since Unix * epoch), or 0 if the session doesn't expire. * * @param time - timestamp in milliseconds */ public void setAccessExpires(long time) { mAccessExpires = time; } /** * Set the current session's duration (in seconds since Unix epoch), or "0" * if session doesn't expire. * * @param expiresIn * - duration in seconds (or 0 if the session doesn't expire) */ public void setAccessExpiresIn(String expiresIn) { if (expiresIn != null) { long expires = expiresIn.equals("0") ? 0 : System.currentTimeMillis() + Long.parseLong(expiresIn) * 1000L; setAccessExpires(expires); } } public String getAppId() { return mAppId; } public void setAppId(String appId) { mAppId = appId; } /** * Callback interface for dialog requests. * */ public static interface DialogListener { /** * Called when a dialog completes. * * Executed by the thread that initiated the dialog. * * @param values * Key-value string pairs extracted from the response. */ public void onComplete(Bundle values); /** * Called when a Facebook responds to a dialog with an error. * * Executed by the thread that initiated the dialog. * */ public void onFacebookError(FacebookError e); /** * Called when a dialog has an error. * * Executed by the thread that initiated the dialog. * */ public void onError(DialogError e); /** * Called when a dialog is canceled by the user. * * Executed by the thread that initiated the dialog. * */ public void onCancel(); } /** * Callback interface for service requests. */ public static interface ServiceListener { /** * Called when a service request completes. * * @param values * Key-value string pairs extracted from the response. */ public void onComplete(Bundle values); /** * Called when a Facebook server responds to the request with an error. */ public void onFacebookError(FacebookError e); /** * Called when a Facebook Service responds to the request with an error. */ public void onError(Error e); } public static final String FB_APP_SIGNATURE = "30820268308201d102044a9c4610300d06092a864886f70d0101040500307a310" + "b3009060355040613025553310b30090603550408130243413112301006035504" + "07130950616c6f20416c746f31183016060355040a130f46616365626f6f6b204" + "d6f62696c653111300f060355040b130846616365626f6f6b311d301b06035504" + "03131446616365626f6f6b20436f72706f726174696f6e3020170d30393038333" + "13231353231365a180f32303530303932353231353231365a307a310b30090603" + "55040613025553310b30090603550408130243413112301006035504071309506" + "16c6f20416c746f31183016060355040a130f46616365626f6f6b204d6f62696c" + "653111300f060355040b130846616365626f6f6b311d301b06035504031314466" + "16365626f6f6b20436f72706f726174696f6e30819f300d06092a864886f70d01" + "0101050003818d0030818902818100c207d51df8eb8c97d93ba0c8c1002c928fa" + "b00dc1b42fca5e66e99cc3023ed2d214d822bc59e8e35ddcf5f44c7ae8ade50d7" + "e0c434f500e6c131f4a2834f987fc46406115de2018ebbb0d5a3c261bd97581cc" + "fef76afc7135a6d59e8855ecd7eacc8f8737e794c60a761c536b72b11fac8e603" + "f5da1a2d54aa103b8a13c0dbc10203010001300d06092a864886f70d010104050" + "0038181005ee9be8bcbb250648d3b741290a82a1c9dc2e76a0af2f2228f1d9f9c" + "4007529c446a70175c5a900d5141812866db46be6559e2141616483998211f4a6" + "73149fb2232a10d247663b26a9031e15f84bc1c74d141ff98a02d76f85b2c8ab2" + "571b6469b232d8e768a7f7ca04f7abe4a775615916c07940656b58717457b42bd" + "928a2"; }