Conductor is a framework for building View-based Android applications using a single Activity architecture.
Conductor solves the complexity of managing UI state and navigation in Android by providing a lightweight wrapper around standard Views that replaces Fragments. The framework centers on the Controller, a simpler alternative to Fragments with more predictable lifecycle management. Navigation and backstack handling are managed through Router objects, which coordinate with ControllerChangeHandler instances to animate transitions between Controllers. This approach eliminates much of the boilerplate associated with Fragment-based architectures while maintaining full control over the View layer.
Conductor suits developers building single-Activity applications who want Fragment-like lifecycle management without Fragment complexity. The framework is architecture-agnostic and works equally well with MVP, MVVM, MVC, or other patterns, imposing no design constraints on developers. It handles state persistence, activity result callbacks, permission request callbacks, and view transitions out of the box. The tool is particularly valuable for teams that have found Fragments difficult to reason about or that prefer explicit View management over the Fragment abstraction.
Development on the project shows sustained production use at significant scale, with the framework already deployed in applications serving millions of users. The team has maintained the codebase through a major version transition, with version 4.0 in preview status while maintaining the same quality standards as the stable 3.x release. A demo application is included in the repository demonstrating both basic and advanced usage patterns.
