Created
May 21, 2011 17:26
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OAuth 2.0 for Android Apps
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/* | |
* Copyright 2011 Google 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. | |
*/ | |
import android.accounts.Account; | |
import android.accounts.AccountManager; | |
import android.accounts.AccountManagerCallback; | |
import android.accounts.AccountManagerFuture; | |
import android.content.Context; | |
import android.content.Intent; | |
import android.content.SharedPreferences; | |
import android.os.Bundle; | |
import android.util.Log; | |
/** | |
* Collection of OAuth 2 utilities to achieve "one-click" approval on Android. | |
* | |
* @author Chirag Shah <chirags@google.com> | |
*/ | |
public class AuthUtils { | |
private static final String TAG = AuthUtils.class.getName(); | |
public static final String PREF_NAME = "Sample App"; | |
public static final String PREF_TOKEN = "accessToken"; | |
public static final String SCOPE = "oauth2:https://www.googleapis.com/auth/buzz"; // Or "Google Buzz" | |
public void refreshAuthToken(final Activity activity, final Account account) { | |
final SharedPreferences settings = activity.getSharedPreferences(PREF_NAME, 0); | |
String accessToken = settings.getString(PREF_TOKEN, ""); | |
final AccountManagerCallback<Bundle> cb = new AccountManagerCallback<Bundle>() { | |
public void run(AccountManagerFuture<Bundle> future) { | |
try { | |
final Bundle result = future.getResult(); | |
final String accountName = result.getString(AccountManager.KEY_ACCOUNT_NAME); | |
final String authToken = result.getString(AccountManager.KEY_AUTHTOKEN); | |
final Intent authIntent = result.getParcelable(AccountManager.KEY_INTENT); | |
if (accountName != null && authToken != null) { | |
final SharedPreferences.Editor editor = settings.edit(); | |
editor.putString(PREF_TOKEN, authToken); | |
editor.commit(); | |
} else if (authIntent != null) { | |
activity.startActivity(authIntent); | |
} else { | |
Log.e(TAG, "AccountManager was unable to obtain an authToken."); | |
} | |
} catch (Exception e) { | |
Log.e(TAG, "Auth Error", e); | |
} | |
} | |
}; | |
AccountManager.get(activity).invalidateAuthToken("com.google", accessToken); | |
AccountManager.get(activity).getAuthToken(account, SCOPE, true, cb, null); | |
} | |
} |
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