Java tutorial
//package com.java2s; import android.app.Activity; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isNetworkAvailable(Activity a) { ConnectivityManager connectivityManager = (ConnectivityManager) a.getSystemService(a.CONNECTIVITY_SERVICE); NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); return activeNetworkInfo != null && activeNetworkInfo.isConnected(); } }