What are the main components included in the structure of an Android application?

The main components of an Android application include:

• Activity — the user interface screen with which the user interacts.
• Service — a component for performing background operations without a user interface.
• Broadcast Receiver — receives and processes system or user broadcast messages.
• Content Provider — provides access to application data for other applications.

Additionally, important elements are:

• Fragments — parts of the interface that can be reused within an Activity.
• ViewModel and LiveData — for managing data and its display considering the lifecycle.

All these components interact through Intent and lifecycle, enabling the creation of flexible and scalable applications.