Broadcast Receivers
Explore how Android Broadcast Receivers function as a pub-sub messaging system, enabling your app to send and receive broadcasts. Learn to send broadcasts, register receivers in the manifest or UI components, and use LocalBroadcastManager for local messaging. This lesson helps you enhance app responsiveness by handling system and custom broadcasts effectively.
We'll cover the following...
Introduction
Broadcast receivers in Android are a pub-sub-based messaging system that can be used by applications to broadcast and receive important announcements. Any application can broadcast a message, and the Android framework will take care of sending the message to all registered subscribers. In addition to applications, several broadcast messages are published by the Android operating system. These broadcasts can be related to boot-up, battery level, or connectivity status, among other things.
Let’s get right to it and learn how to send and receive broadcast messages.
Send broadcasts
Android provides a mechanism for apps to broadcast custom messages. Let’s learn how to send broadcast messages using the sendBroadcast method. The sendBroadcast event transmits messages to all registered subscribers at once. We can restrict the broadcast to our application using LocalBroadcastManager.sendBroadcast.
Let’s see how ...