Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isWifiActive(Context icontext) { Context context = icontext.getApplicationContext(); ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo[] info; if (connectivity != null) { info = connectivity.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].getTypeName().equals("WIFI") && info[i].isConnected()) { return true; } } } } return false; } }