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.bosco.noticeboard; import android.app.IntentService; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.os.Build; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.content.LocalBroadcastManager; import android.telephony.TelephonyManager; import android.util.Log; import android.widget.Toast; import com.google.android.gms.gcm.GcmPubSub; import com.google.android.gms.gcm.GoogleCloudMessaging; import com.google.android.gms.iid.InstanceID; import org.json.JSONObject; import java.io.IOException; import java.util.HashMap; import java.util.Map; public class RegistrationIntentService extends IntentService { private static final String TAG = "RegIntentService"; private static final String[] TOPICS = { "global" }; private Intent intent; public RegistrationIntentService() { super(TAG); } @Override protected void onHandleIntent(Intent intent) { SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); this.intent = intent; String result = ""; String token = ""; Log.d(TAG, "" + sharedPreferences.getBoolean(NoticeBoardPreferences.SENT_TOKEN_TO_SERVER, false)); //Return if already have token if (sharedPreferences.getBoolean(NoticeBoardPreferences.SENT_TOKEN_TO_SERVER, false)) { Log.d(TAG, "Device is already registered."); Log.d(TAG, "Token : " + sharedPreferences.getString(NoticeBoardPreferences.GCM_TOKEN, "")); return; } 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] if (!NetworkHandler.isConnectingToInternet()) { Thread.sleep(1500); return; } InstanceID instanceID = InstanceID.getInstance(this.getApplicationContext()); token = instanceID.getToken(getString(R.string.gcm_defaultSenderId), GoogleCloudMessaging.INSTANCE_ID_SCOPE, null); // [END get_token] Log.d(TAG, "GCM Registration Token: " + 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. result = sendRegistrationToServer(token); JSONHandler json = new JSONHandler(result); Log.d(TAG, "JSON : result => " + json.getString("result")); if (json.getString("result").equals("success")) { sharedPreferences.edit().putBoolean(NoticeBoardPreferences.SENT_TOKEN_TO_SERVER, true).apply(); sharedPreferences.edit().putString(NoticeBoardPreferences.GCM_TOKEN, token).apply(); } else { sharedPreferences.edit().putBoolean(NoticeBoardPreferences.SENT_TOKEN_TO_SERVER, false).apply(); } // [END register_for_gcm] } catch (Exception e) { Log.d(TAG, "Failed to complete token refresh", e); Toast.makeText(this, "Failed to register device.", Toast.LENGTH_LONG).show(); // 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(NoticeBoardPreferences.SENT_TOKEN_TO_SERVER, false).apply(); } // Notify UI that registration has completed, so the progress indicator can be hidden. Intent registrationComplete = new Intent(NoticeBoardPreferences.REGISTRATION_COMPLETE); Bundle data = new Bundle(); data.putString("result", result); registrationComplete.putExtra("data", data); 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 String sendRegistrationToServer(String token) { //TODO Sync channels from server to mobile after reinstalling app // get device IMEI number TelephonyManager mngr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); String IMEI = "UNKNOWN"; String deviceInfo = "UNKNOWN"; try { IMEI = mngr.getDeviceId(); JSONObject jsonObject = new JSONObject(); jsonObject.put("SDK", Build.VERSION.SDK_INT); jsonObject.put("RELEASE", Build.VERSION.RELEASE); jsonObject.put("MODEL", android.os.Build.MODEL); jsonObject.put("BRAND", Build.BRAND); jsonObject.put("MANUFACTURER", Build.MANUFACTURER); Log.d(TAG, "DEVICE : " + jsonObject.toString()); deviceInfo = jsonObject.toString(); } catch (Exception e) { Log.d(TAG, "Unable to device info"); } String url = NoticeBoardPreferences.URL_REGISTER_TOKEN; Map<String, String> payload = new HashMap<String, String>(); payload.put(NoticeBoardPreferences.KEY_TOKEN, token); payload.put(NoticeBoardPreferences.KEY_IMEI, IMEI); payload.put(NoticeBoardPreferences.KEY_DEVICE, deviceInfo); NetworkHandler nh = new NetworkHandler(payload, url); return nh.callServer(); } }