Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean hasConnection(Context c) { ConnectivityManager cm = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo wifiNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (wifiNetwork != null && wifiNetwork.isConnected()) { return true; } NetworkInfo mobileNetwork = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mobileNetwork != null && mobileNetwork.isConnected()) { return true; } NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); if (activeNetwork != null && activeNetwork.isConnected()) { return true; } return false; } }