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Part 1: UI State Management with Sealed Classes in Jetpack Compose

6 min readJun 3, 2025

Handling Authentication, Paginated Data, Modal Dialogs, and Search States

Jetpack Compose has made Android UI development faster and more intuitive by introducing a declarative approach to building UIs. However, managing various UI states such as loading, success, error, and empty states can be challenging. This is where Sealed Classes come in handy, providing a clear, type-safe, and maintainable way to manage different UI states.

In this two-part series, we’ll explore how to use Sealed Classes in Jetpack Compose for effective UI state management. This first part will focus on authentication, paginated data loading, modal dialogs, and search states.

What are Sealed Classes?

A sealed class in Kotlin allows you to define a restricted class hierarchy. Unlike regular classes, a sealed class limits the inheritance to a fixed set of subclasses, which can help handle different states in your app efficiently.

  • Cannot be instantiated directly.
  • Can only be subclassed within the same file.
  • Enables exhaustive when statements without needing an else clause.
  • It is implicitly abstract.

Example 1: Authentication State…

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Dharma Kshetri
Dharma Kshetri

Written by Dharma Kshetri

Sr. Android Engineer at Cognizant || Interested: KMP, AI, IoT, Compose, Mobile Arch, Kotlin+ || Blog: code4kotlin.com

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