Java tutorial
//package com.java2s; /* * Copyright 2012 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.AccountManager; import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; public class Main { private static final String PREF_AUTH_TOKEN = "auth_token"; public static final String ACCOUNT_TYPE = "com.shengbox"; public static void invalidateAuthToken(final Context context) { AccountManager am = AccountManager.get(context); am.invalidateAuthToken(ACCOUNT_TYPE, getAuthToken(context)); setAuthToken(context, null); } public static String getAuthToken(final Context context) { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); return sp.getString(PREF_AUTH_TOKEN, null); } private static void setAuthToken(final Context context, final String authToken) { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); sp.edit().putString(PREF_AUTH_TOKEN, authToken).commit(); } }