Java tutorial
//package com.java2s; /* * Copyright (C) 2011 Xavier Ivars-Ribes <xavi.ivars@gmail.com> * * 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 2 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, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ import android.app.Activity; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean checkInternet(Activity act) { ConnectivityManager conMgr = (ConnectivityManager) act.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo i = conMgr.getActiveNetworkInfo(); if (i == null) { return false; } if (!i.isConnected()) { return false; } if (!i.isAvailable()) { return false; } return true; } }