Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; public class Main { public static boolean isNetworkConnected(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); return (cm.getActiveNetworkInfo() != null) && cm.getActiveNetworkInfo().isConnectedOrConnecting(); } }