Channels in Kotlin Coroutines: A Complete Q&A Guide for Android Apps

Source: Dev.to

Introduction

Channels are one of the most underrated features in Kotlin Coroutines. They solve problems that Flow alone cannot — especially when you’re dealing with concurrency, event streams, or multi‑producer pipelines in Android apps.

I’ve created a complete Q&A guide that covers:

• What exactly Channels are
• How they work under the hood
• Channel vs Flow vs SharedFlow vs callbackFlow
• Real Android use cases (MVI event streams, background tasks, producer–consumer patterns)
• Advanced interview questions with detailed answers

If you want to strengthen your Coroutines knowledge or prepare for Android interviews, this guide is made for you.

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