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