Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isOnline(final Context context) { final ConnectivityManager conMgr = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); final NetworkInfo[] networkInfos = conMgr.getAllNetworkInfo(); for (final NetworkInfo networkInfo : networkInfos) { if ((networkInfo.getState() == NetworkInfo.State.CONNECTED) || (networkInfo.getState() == NetworkInfo.State.CONNECTING)) { return true; } } return false; } }