Java tutorial
//package com.java2s; //License from project: Open Source License import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { /** * Returns true if network is available */ static boolean isNetworkAvailable(Context context) { // Copied from // https://udacity-github-sync-content.s3.amazonaws.com/_imgs/752/1436612063/Screen_Shot_2015-07-11_at_12.53.52.png ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); return activeNetworkInfo != null && activeNetworkInfo.isConnected(); } }