push_notification_app

Flutter app that implements Push Notifications with Django Channels using websocket protocol.Uses Libraries flutter_local_notifications and web_socket_channel.

Getting Started

Setup Django Locally

Requirements

• Django==3.0.7
• channels==2.4.0
• channels-redis==2.4.2
• Install Redis
• Run ifconfig and obtain IP_ADDRESS
• Run python3 manage.py runserver [IP_ADDRESS]:8000

Setup Flutter app

Requirements

• Flutter 1.17.5
• Change the URL inside main.dart to ws://[IP_ADDRESS]:8000/ws/notify/
• Connect the device and the system to a single network.
• Run flutter run

Libraries used in Flutter

• Web Socket Channel
• Flutter Local Notification

Web Socket Channel

Web Socket Channel library is a flutter library that helps in creating a websocket connection with a server. Websockets helps in retaining the connection unlike a http request which also helps in 2 way communication, by which the server sends the message to the client. It provides a StreamChannel wrapper for websocket connections. In the app I've used a StreamSubscription to listen to messages from server.

Flutter Local Notifications

Flutter Local Notification is a flutter library that helps in making push notifications available to a flutter app.When a message is recieved from the server, it notifies by displaying a push notification with vibration and sound.The push notification is available even when the app is in background.

Libraries used in Django

• Django Channels

Django Channels

Django channels is a python library for Django which extends Django's capability and adds an asynchronous channel layer, which helps in 2 way communication.