Java tutorial
//package com.java2s; /* Copyright (C) 2013 Prasanna Thirumalai This file is part of StackX. StackX 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. StackX 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 StackX. If not, see <http://www.gnu.org/licenses/>. */ import android.content.Context; import android.net.ConnectivityManager; public class Main { public static boolean isNetworkAvailable(Context context) { if (context == null) return false; ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().isConnectedOrConnecting(); } }