What is BroadcastReceiver and when we use it?

Question

What is a BroadcastReceiver? What are its uses and how can I use it?

Answer 1

Broadcast Receivers simply respond to broadcast messages from other applications or from the system itself. These messages are sometime called events or intents. For example, applications can also initiate broadcasts to let other applications know that some data has been downloaded to the device and is available for them to use, so this is broadcast receiver who will intercept this communication and will initiate appropriate action.