Java tutorial
/** * Copyright 2015 Google Inc. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.company.millenium.iwannask; import android.app.IntentService; import android.content.Intent; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.support.v4.content.LocalBroadcastManager; import android.util.Log; import com.google.android.gms.gcm.GcmPubSub; import com.google.android.gms.gcm.GoogleCloudMessaging; import com.google.android.gms.iid.InstanceID; import org.json.JSONException; import org.json.JSONObject; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; public class RegistrationIntentService extends IntentService { private static final String TAG = "RegIntentService"; private static final String[] TOPICS = { "global" }; public RegistrationIntentService() { super(TAG); } @Override protected void onHandleIntent(Intent intent) { //String session = intent.getStringExtra("session"); SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); try { // [START register_for_gcm] // Initially this call goes out to the network to retrieve the token, subsequent calls // are local. // R.string.gcm_defaultSenderId (the Sender ID) is typically derived from google-services.json. // See https://developers.google.com/cloud-messaging/android/start for details on this file. // [START get_token] InstanceID instanceID = InstanceID.getInstance(this); String token = instanceID.getToken(getString(R.string.gcm_defaultSenderId), GoogleCloudMessaging.INSTANCE_ID_SCOPE, null); // [END get_token] Log.i(TAG, "GCM Registration Token: " + token); // TODO: Implement this method to send any registration to your app's servers. //sendRegistrationToServer(session, token); sendRegistrationToServer(token); // Subscribe to topic channels subscribeTopics(token); // You should store a boolean that indicates whether the generated token has been // sent to your server. If the boolean is false, send the token to your server, // otherwise your server should have already received the token. sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, true).apply(); // [END register_for_gcm] } catch (Exception e) { Log.d(TAG, "Failed to complete token refresh", e); // If an exception happens while fetching the new token or updating our registration data // on a third-party server, this ensures that we'll attempt the update at a later time. sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, false).apply(); } // Notify UI that registration has completed, so the progress indicator can be hidden. Intent registrationComplete = new Intent(QuickstartPreferences.REGISTRATION_COMPLETE); LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete); } /** * Persist registration to third-party servers. * * Modify this method to associate the user's GCM registration token with any server-side account * maintained by your application. * * @param token The new token. */ private void sendRegistrationToServer(String token) { // Add custom implementation, as needed. try { // Prepare JSON containing the GCM message content. What to send and where to send. JSONObject jGcmData = new JSONObject(); // What to send in GCM message. jGcmData.put("token", token); String session = getCookie(Constants.SERVER_URL, "session"); // Create connection to send GCM Message request. URL url = new URL(Constants.SERVER_URL + "/register_token"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestProperty("Content-Type", "application/json"); if (session == null) { // we couldn't get a cookie, try later throw new NoCookieException(); } conn.setRequestProperty("Cookie", "session=" + session); conn.setRequestMethod("POST"); conn.setDoOutput(true); // Send GCM message content. OutputStream outputStream = conn.getOutputStream(); outputStream.write(jGcmData.toString().getBytes()); // Read GCM response. InputStream inputStream = conn.getInputStream(); String resp = inputStream.toString(); if (resp.contentEquals("success")) { } //String resp1 = IOUtils.toString(inputStream); } catch (NoCookieException e) { System.out.println("Unable to get the session cookie"); e.printStackTrace(); } catch (IOException e) { System.out.println("Unable to send GCM message."); System.out.println("Please ensure that API_KEY has been replaced by the server " + "API key, and that the device's registration token is correct (if specified)."); e.printStackTrace(); } catch (JSONException e) { e.printStackTrace(); } } public String getCookie(String siteName, String CookieName) { String CookieValue = null; android.webkit.CookieManager cookieManager = android.webkit.CookieManager.getInstance(); String cookies = cookieManager.getCookie(siteName); if (cookies != null) { String[] temp = cookies.split(";"); for (String ar1 : temp) { if (ar1.contains(CookieName)) { String[] temp1 = ar1.split("="); return temp1[1]; } } } return null; } /** * Subscribe to any GCM topics of interest, as defined by the TOPICS constant. * * @param token GCM token * @throws IOException if unable to reach the GCM PubSub service */ // [START subscribe_topics] private void subscribeTopics(String token) throws IOException { GcmPubSub pubSub = GcmPubSub.getInstance(this); for (String topic : TOPICS) { pubSub.subscribe(token, "/topics/" + topic, null); } } // [END subscribe_topics] }