Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.support.annotation.NonNull; public class Main { public static boolean isNetworkConnected(@NonNull Context context) { ConnectivityManager cm = (ConnectivityManager) context.getApplicationContext() .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); return activeNetwork != null && activeNetwork.isConnectedOrConnecting(); } }