Android Interview Question Answer: Background services

This article of the interview questions mostly focuses on the background process of Android.

1. What are Services in Android?

A Service in Android is an application component that runs in the background to perform long-running tasks without a user interface. Services can be used for operations like playing music, handling network transactions, or background computations.

What are the types of Services in Android?

Android provides three types of services:

1. Foreground Service: Runs in the background but must show a notification (e.g., music player).
2. Background Service: Runs without user interaction and a visible notification.
3. Bound Service: Allows an application component (like an Activity) to bind and communicate with the service.

What is the difference between Foreground, Background, and Bound Services?

A Foreground Service runs in the background but remains visible to the user through a persistent notification. It is used for long-running tasks that must continue even when the app is not used. Since the user knows its activity, the system is less likely to kill it.

🔹 Example Use Cases: Music players, GPS tracking, file downloads.

A Background Service runs without user awareness and does not display a notification. It is best for short-lived background tasks such as…