The basic components of an Android application are: Activity, Service, BroadcastReceiver, ContentProvider. Each of these foundational components is declared in the Android manifest and can serve as an entry point into the application.
Activity represents the UI and functionality that are visible to the user.
Service is used for executing long-running operations that do not require user interaction.
BroadcastReceiver receives and processes broadcast events, sent either within the app or from other applications.
ContentProvider is used for sharing data with other applications.
We will explore each of these components in more detail further.