Java tutorial
//package com.java2s; /** * Copyright 2010 CssWeb Microsystems, Inc. All rights reserved. * CssWeb PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * @(#)ActivityUtil.java ?08:07:55 2010-10-3 */ import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isNetworkAvailable(Context context) { ConnectivityManager cn = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (cn == null) { return false; } NetworkInfo[] netinfo = cn.getAllNetworkInfo(); if (netinfo == null) { return false; } for (NetworkInfo net : netinfo) { if (net.isConnected()) { return true; } } return false; } }