CymChad/BaseRecyclerViewAdapterHelper
This system is an Android demonstration application for the BaseRecyclerViewAdapterHelper (BRVAH) library, showcasing modern RecyclerView adapter patterns. It provides concrete examples of implementing efficient list updates, complex item interactions like drag-and-swipe, hierarchical node lists, and multi-type adapters using Kotlin and the new v4 adapter architecture. The app also illustrates utility features such as custom animations, empty states, and load-more behaviors.
51.7
Adequate · 5 August 2026
7.3k
lines of production code
Kotlin
with Java
3
bus factor · 60 authors in all
4
measurements over time
How it got here
2016 · Modernization to Kotlin and Gradle Kotlin DSL
The project underwent a significant modernization of its build system and codebase, migrating from Java to Kotlin and from Groovy to Gradle Kotlin DSL. This period introduced a new v4 adapter architecture with modern Android features like AsyncListDiffer, while also cleaning up legacy code and dependencies.
11 changes
2019–2022 · Demo app modernization and feature expansion
The project focused on modernizing the demo application by migrating code to Kotlin and integrating with the Adapter4 library. This period introduced comprehensive examples for new features including drag-and-swap, DiffUtil, animations, and header/footer management, while establishing a consistent UI foundation with base activities and toolbar widgets.
23 changes
2023–2026 · multi-node list and build system updates
This period focused on introducing a new multi-node list feature, including a demo activity and adapter logic for hierarchical, expandable/collapsible node structures. Additionally, the project updated its build configuration to automatically provision JDK 21 via Gradle.
4 changes
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About this page
- The description of this project is derived from its own commit history, not from its README.
- The score is its highest published measurement, taken on 5 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
- Measured at commit 9948068cd9 — the exact code this score is about.
- Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.