What are the main categories to classify Intent components in Android?

In Android, Intent components can be classified into the following main categories:

1. Explicit Intent — specifies a particular component (e.g., an Activity or Service class) that should handle the Intent. Used for launching components within the same application.

2. Implicit Intent — does not specify a particular component but describes an action to be performed (e.g., viewing a web page, sending a message). The system selects an appropriate component to handle it.

3. Broadcast Intent — used for sending broadcast messages that can be received by multiple components registered for specific events.

Thus, Intents are classified based on how the target is determined and their purpose (launching components or broadcasting messages).