Java tutorial
//package com.java2s; //License from project: Open Source License import android.app.Activity; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { /** * Checks whether application has Internet connection. */ public static boolean isConnected(Activity a) { ConnectivityManager connMgr = (ConnectivityManager) a.getSystemService(Activity.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.isConnected()) return true; else return false; } }