Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.util.Log; public class Main { public static boolean isNetworkAvailable(Context context) { try { //define object of ConnectivityManager ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); //define object of NetworkInfo and get detailed info about // the currently active default data network from ConnectivityManager NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); //check connection return activeNetworkInfo != null && activeNetworkInfo.isConnected(); } catch (Exception ex) { Log.e("Helper", "isNetworkAvailable: " + ex.getMessage()); return false; } } }