Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean hasInternetAccess(Context context) { try { boolean hasInternet = false; ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = cm.getActiveNetworkInfo(); NetworkInfo wifi = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI); NetworkInfo mobile = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if ((wifi.isAvailable() || mobile.isAvailable()) && networkInfo != null && networkInfo.isConnectedOrConnecting()) { hasInternet = true; } return hasInternet; } catch (Exception e) { return false; } } }