Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isConnected(Context paramContext) { NetworkInfo localNetworkInfo = ((ConnectivityManager) paramContext.getSystemService("connectivity")) .getActiveNetworkInfo(); return (localNetworkInfo != null) && (localNetworkInfo.isConnected()); } }