Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isNetworkActivate(Context context) { boolean isConnected = false; ConnectivityManager cgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (cgr == null) { return false; } NetworkInfo info = cgr.getActiveNetworkInfo(); if ((info != null) && info.isConnected()) { isConnected = true; } return isConnected; } }