How does the processing and interception of Intent occur in system architecture?

In Android, an Intent is an object used to pass messages between components (Activity, Service, BroadcastReceiver). The handling and interception of Intents occurs as follows:

1. Sending an Intent: A component creates an Intent with the necessary data and calls a method, for example, startActivity(intent) or sendBroadcast(intent).

2. Filtering Intents: Intent filters (IntentFilter) are set either in the manifest or programmatically in components (e.g., BroadcastReceiver) to specify which Intents they can receive.

3. Intercepting an Intent: When the system receives an Intent, it searches for components whose filters match the Intent and delivers the Intent to them.

4. Handling an Intent: The component receives the Intent in lifecycle methods, for example, in onCreate() or onNewIntent() for Activities, or in onReceive() for BroadcastReceiver, and processes the data.

Example of intercepting a Broadcast Intent:

public class MyReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
            // Handle device boot event
        }
    }
}

Thus, the system uses Intent filters for routing and intercepting Intents, and components handle them in the appropriate methods.