Final answer:
You can use Java code to register and unregister a broadcast receiver in Android development. To register, you create a BroadcastReceiver instance and call registerReceiver(), and to unregister you call unregisterReceiver() accordingly.
Step-by-step explanation:
You can use Java code to register and unregister a broadcast receiver. In the context of Android app development, registering a broadcast receiver allows your app to listen for system-wide broadcast messages from the operating system or other applications. Conversely, unregistering a broadcast receiver ensures that the receiver stops receiving such messages, usually as a part of an app's lifecycle when the app or component is not active.
To register a receiver, you would typically define an instance of BroadcastReceiver and call the registerReceiver() method with the appropriate filter within your activity or service. To unregister, you would call the unregisterReceiver() method in the corresponding onPause(), onStop(), or onDestroy() lifecycle method.