Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.NetworkInfo.State; public class Main { public static State getNetworkState(Context act) { ConnectivityManager cm = (ConnectivityManager) act.getSystemService(Context.CONNECTIVITY_SERVICE); if (cm == null) return null; NetworkInfo info = cm.getActiveNetworkInfo(); if (info != null) return info.getState(); return null; } }