Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean checkNetworkAvailable(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity == null) { return false; } else { NetworkInfo[] info = connectivity.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].getState() == NetworkInfo.State.CONNECTED) { NetworkInfo netWorkInfo = info[i]; if (netWorkInfo.getType() == ConnectivityManager.TYPE_WIFI) { return true; } else if (netWorkInfo.getType() == ConnectivityManager.TYPE_MOBILE) { return true; } } } } } return false; } }