android push notification intro tutorial

1.xml

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<permission android:name="your.package.name.permission.C2D_MESSAGE" android:protectionLevel="signature" />
<uses-permission android:name="your.package.name.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

10.java

PNConfiguration pnConfiguration = new PNConfiguration();
pnConfiguration.setSubscribeKey("demo");
pnConfiguration.setPublishKey("demo");
PubNub pubnub = new PubNub(pnConfiguration);

11.java

private void sendRegistrationId(String regId) {
    pubnub.addPushNotificationsOnChannels()
    .pushType(PNPushType.GCM)
    .channels(Arrays.asList("ch1", "ch2", "ch3"))
    .deviceId(regId)
    .async(new PNCallback<PNPushAddChannelResult>() {
        @Override
        public void onResponse(PNPushAddChannelResult result, PNStatus status) {
            // handle response.
        }
    });
}

12.java

private void storeRegistrationId(Context context, String regId) throws Exception {
    final SharedPreferences prefs =
            getSharedPreferences(MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = prefs.edit();
    editor.putString(PROPERTY_REG_ID, regId);
    editor.apply();

13.java

public void sendNotification() {
    PnGcmMessage gcmMessage = new PnGcmMessage();
    JSONObject jso = new JSONObject();
    try {
        jso.put("GCMSays", "hi");
    } catch (JSONException e) { }
    gcmMessage.setData(jso);

    PnMessage message = new PnMessage(
            pubnub,
            "your channel name",
            callback,
            gcmMessage);
    try {
        message.publish();
    } catch (PubnubException e) {
        e.printStackTrace();
    }
}

14.java

public static Callback callback = new Callback() {
    @Override
    public void successCallback(String channel, Object message) {
        Log.i(TAG, "Success on Channel " + CHANNEL + " : " + message);
    }
    @Override
    public void errorCallback(String channel, PubnubError error) {
        Log.i(TAG, "Error On Channel " + CHANNEL + " : " + error);
    }
};

15.java

private void unregister() {
    new AsyncTask() {
        @Override
        protected Object doInBackground(Object[] params) {
            try {
                if (gcm == null) {
                    gcm = GoogleCloudMessaging.getInstance(context);
                }

                // Unregister from GCM
                gcm.unregister();

                // Remove Registration ID from memory
                removeRegistrationId(context);

                // Disable Push Notification
                pubnub.disablePushNotificationsOnChannel("your channel name", regId);

            } catch (Exception e) { }
            return null;
        }
    }.execute(null, null, null);
}

private void removeRegistrationId(Context context) throws Exception {
    pubnub.removePushNotificationsFromChannels()
    .deviceId("googleDevice")
    .channels(Arrays.asList("ch1", "ch2", "ch3"))
    .pushType(PNPushType.GCM)
    .async(new PNCallback<PNPushRemoveChannelResult>() {
        @Override
        public void onResponse(PNPushRemoveChannelResult result, PNStatus status) {
         
        }
    });
}

2.xml

<receiver
    android:name=".GcmBroadcastReceiver"
    android:permission="com.google.android.c2dm.permission.SEND" >
    <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <category android:name="your.package.name" />
    </intent-filter>
</receiver>
<service android:name=".GcmIntentService" />
<meta-data android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

3.java

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        ComponentName comp = new ComponentName(context.getPackageName(),
                GcmIntentService.class.getName());
        startWakefulService(context, (intent.setComponent(comp)));
        setResultCode(Activity.RESULT_OK);
    }
}

4.java

public class GcmIntentService extends IntentService {

    public GcmIntentService() {
        super("GcmIntentService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        Bundle extras = intent.getExtras();
        GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
        String messageType = gcm.getMessageType(intent);

        if (!extras.isEmpty() && GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {      
            sendNotification("Received: " + extras.toString()); 
        }
        GcmBroadcastReceiver.completeWakefulIntent(intent);
    }

5.java

private void sendNotification(String msg) {
    NotificationManager mNotificationManager = (NotificationManager)
            this.getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class), 0);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle("PubNub GCM Notification")
                    .setStyle(new NotificationCompat.BigTextStyle()
                            .bigText(msg))
                    .setContentText(msg);

    mBuilder.setContentIntent(contentIntent);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}

6.java

private void register() {
    if (checkPlayServices()) {
        gcm = GoogleCloudMessaging.getInstance(this);
        try {
            regId = getRegistrationId(context);
        } catch (Exception e) {
            e.printStackTrace();
        }

        if (regId.isEmpty()) {
            registerInBackground();
        } else {
            toastUser("Registration ID already exists: " + regId);
        }
    } else {
        Log.e(TAG, "No valid Google Play Services APK found.");
    }
}

7.java

private boolean checkPlayServices() {
    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (resultCode != ConnectionResult.SUCCESS) {
        if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
            GooglePlayServicesUtil.getErrorDialog(resultCode, this, PLAY_SERVICES_RESOLUTION_REQUEST).show();
        } else {
            Log.e(TAG, "This device is not supported.");
            finish();
        }
        return false;
    }
    return true;
}

8.java

private String getRegistrationId(Context context) throws Exception {
    final SharedPreferences prefs =
            getSharedPreferences(MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
    String registrationId = prefs.getString(PROPERTY_REG_ID, "");
    if (registrationId.isEmpty()) {
        return "";
    }

    return registrationId;
}

9.java

private void registerInBackground() {
    new AsyncTask() {
        @Override
        protected String doInBackground(Object[] params) {
            String msg;
            try {
                if (gcm == null) {
                    gcm = GoogleCloudMessaging.getInstance(context);
                }
                regId = gcm.register(SENDER_ID);
                msg = "Device registered, registration ID: " + regId;

                sendRegistrationId(regId);

                storeRegistrationId(context, regId);
                Log.i(TAG, msg);
            } catch (Exception ex) {
                msg = "Error :" + ex.getMessage();
                Log.e(TAG, msg);
            }
            return msg;
        }
    }.execute(null, null, null);
}