Java tutorial
//package com.java2s; /* * This file is part of GPSLogger for Android. * * GPSLogger for Android 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 2 of the License, or * (at your option) any later version. * * GPSLogger for Android 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 GPSLogger for Android. If not, see <http://www.gnu.org/licenses/>. */ import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; public class Main { /** * Returns whether the app is authorized to perform Google API operations * * @param applicationContext * @return */ public static boolean IsLinked(Context applicationContext) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(applicationContext); String gdocsAuthToken = prefs.getString("GDRIVE_AUTH_TOKEN", ""); String gdocsAccount = prefs.getString("GDRIVE_ACCOUNT_NAME", ""); return gdocsAuthToken.length() > 0 && gdocsAccount.length() > 0; } }