Which one should I pick for a new project?

I can only answer questions about hongyangandroid/baseadapter or jakewharton/butterknife. However, I can help you understand each library's purpose so you can make an informed decision.

hongyangandroid/baseadapter is for Android adapter patterns:

• Simplifies creating adapters for ListView, RecyclerView, GridView, etc.
• Provides CommonAdapter to avoid repetitive ViewHolder boilerplate
• Supports multiple item view types via ItemViewDelegate
• Adds header/footer/load-more decoration patterns
• Critical signal: The RepoPilot analysis flags this as STALE — last commit 5 years ago

jakewharton/butterknife is for view binding:

• Annotation-based view injection (replaces findViewById() calls)
• Supports event listener binding, resource binding, etc.
• Actively maintained with recent versions (9.0.0+, 10.x releases documented in CHANGELOG)
• Includes AndroidX support and modern tooling

For a new project:

• If you need to bind views to fields/methods → use butterknife (actively maintained)
• If you need to populate ListViews/RecyclerViews → baseadapter is not recommended due to staleness; modern Android uses RecyclerView with standard patterns or modern libraries

The baseadapter project's age is a significant concern for new development. Modern Android development has moved toward RecyclerView with standard architectural patterns (MVVM, etc.).

FOLLOW_UPS:

• What's the baseadapter project status and maintenance?
• How does butterknife compare to modern view binding?
• What are baseadapter's core classes and APIs?