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 se.bjarntoft.detectionclient; 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.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; 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) { 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); sharedPreferences.edit().putBoolean(AppPreferences.SENT_TOKEN_TO_SERVER, false).apply(); System.out .println("Vrde: " + sharedPreferences.getBoolean(AppPreferences.SENT_TOKEN_TO_SERVER, false)); // TODO: Implement this method to send any registration to your app's servers. if (!sharedPreferences.getBoolean(AppPreferences.SENT_TOKEN_TO_SERVER, false)) { System.out.println("sendRegistrationToServer"); 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(AppPreferences.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(AppPreferences.SENT_TOKEN_TO_SERVER, false).apply(); } // Notify UI that registration has completed, so the progress indicator can be hidden. Intent registrationComplete = new Intent(AppPreferences.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) { SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); // Kontrollerar om anvndaren r inloggad. if (sharedPreferences.getBoolean(AppPreferences.USER_LOGGED_IN, false)) { String id = sharedPreferences.getString(AppPreferences.USER_ID, ""); String password = sharedPreferences.getString(AppPreferences.USER_PASSWORD, ""); try { URL url = new URL(AppPreferences.HOST + "token.php"); String request = "id=" + id + "&password=" + password + "&token=" + token; // Upprttar anslutning. HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod("POST"); urlConnection.setDoOutput(true); // Snder http-request. OutputStream outputStream = urlConnection.getOutputStream(); outputStream.write((request).getBytes()); outputStream.flush(); outputStream.close(); // Tar emot respons. if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) { BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(urlConnection.getInputStream())); // Lser in mottagen data. StringBuilder response = new StringBuilder(); String line; while ((line = bufferedReader.readLine()) != null) { response.append(line); } try { // Extraherar mottaget json-objekt. JSONObject jsonObject = new JSONObject(response.toString()); // Kontrollerar innehllet i mottaget json-objekt. if (jsonObject.getString("token").equals("true")) { sharedPreferences.edit().putBoolean(AppPreferences.SENT_TOKEN_TO_SERVER, true).apply(); } } catch (JSONException e) { System.out.println("JSONException: " + e); } } } catch (MalformedURLException e) { System.out.println("MalformedURLException: " + e); } catch (IOException e) { System.out.println("IOException: " + e); } } else { sharedPreferences.edit().putBoolean(AppPreferences.SENT_TOKEN_TO_SERVER, false).apply(); } } /** * 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] }