Java tutorial
//package com.java2s; //License from project: Open Source License import android.content.Context; import android.preference.PreferenceManager; public class Main { public static String getParakeetURL(Context context) { String my_receivers = PreferenceManager.getDefaultSharedPreferences(context) .getString("wifi_recievers_addresses", "").trim(); if (my_receivers.equals("")) return null; String[] hosts = my_receivers.split(","); if (hosts.length == 0) return null; for (String host : hosts) { host = host.trim(); if ((host.startsWith("http://") || host.startsWith("https://")) && (host.contains("/json.get") || host.contains("Parakeet"))) { return host; } } return null; } }