androidx/androidx
May 2025 – Mar 2026
8 Months active
Languages Used
GradleJavaKotlinTOMLGroovy
Technical Skills
API DesignAndroid DevelopmentBuild ConfigurationComponent OverridesComponent OverridingDependency Management
Kevin Most
PROFILE
Kevin Most
Kostya Mostovoy contributed to the androidx/androidx repository by developing and refining XR-ready UI components, animation frameworks, and infrastructure for Android applications. He engineered extensible navigation and toolbar APIs using Kotlin and Jetpack Compose, enabling adaptive experiences across XR and traditional environments. His work included modularizing XR stubs, optimizing scrolling and focus behavior in lists, and improving dependency management with Gradle. By integrating robust testing and enforcing code quality through lint and immutability, Kostya ensured maintainable, reliable features. His technical approach emphasized cross-component reusability, stability during release cycles, and seamless integration of new UI paradigms within evolving Android libraries.
Overall Statistics
Feature vs Bugs
81%Features
Repository Contributions
28Total
Bugs
3
Commits
28
Features
13
Lines of code
8,031
Activity Months8
Your Network
5007 peopleSame Organization
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481
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Work History
March 2026
3 Commits • 2 Features
Mar 1, 2026March 2026 highlights strong progress in UI reliability and animation framework robustness for androidx/androidx. Key work focused on enhancing GlimmerList focus behavior for better accessibility and streamlining autofocus logic, alongside hardening the animation system by enforcing immutability and reliable equality semantics. All changes include test coverage and pass status, contributing to maintainability and future reuse across components.
3 Commits • 2 Features
Mar 1, 2026March 2026 highlights strong progress in UI reliability and animation framework robustness for androidx/androidx. Key work focused on enhancing GlimmerList focus behavior for better accessibility and streamlining autofocus logic, alongside hardening the animation system by enforcing immutability and reliable equality semantics. All changes include test coverage and pass status, contributing to maintainability and future reuse across components.
March 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for androidx/androidx focused on delivering a feature-rich scrolling experience and stabilizing list performance. Implemented Glimmer: Generalize Modifier.edgeScrim to use ScrollIndicatorState, added immutable optimization for average item size, integrated ScrollIndicatorState into ListState, and expanded test coverage. A bug related to edgeScrim and indicator interaction (481662773) was fixed. This release improves scrolling feedback accuracy, reduces list layout overhead, and improves test reliability.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for androidx/androidx focused on delivering a feature-rich scrolling experience and stabilizing list performance. Implemented Glimmer: Generalize Modifier.edgeScrim to use ScrollIndicatorState, added immutable optimization for average item size, integrated ScrollIndicatorState into ListState, and expanded test coverage. A bug related to edgeScrim and indicator interaction (481662773) was fixed. This release improves scrolling feedback accuracy, reduces list layout overhead, and improves test reliability.
December 2025
4 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary focusing on XR infrastructure improvements, stability, and dependency management for androidx/androidx. Key deliverables include XR Stubs Refactoring and Organization (moved XR stubs to a dedicated Maven group ID and updated artifact IDs to start with xr), XR Stubs Stability with Default Instance Handling (XrStubs.get now returns a default instance to prevent crashes on version mismatches), and Dependency Stability and Version Management (unpinning dependencies and aligning versions to enable flexible updates). All builds and existing tests pass after changes, with release readiness maintained.
4 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary focusing on XR infrastructure improvements, stability, and dependency management for androidx/androidx. Key deliverables include XR Stubs Refactoring and Organization (moved XR stubs to a dedicated Maven group ID and updated artifact IDs to start with xr), XR Stubs Stability with Default Instance Handling (XrStubs.get now returns a default instance to prevent crashes on version mismatches), and Dependency Stability and Version Management (unpinning dependencies and aligning versions to enable flexible updates). All builds and existing tests pass after changes, with release readiness maintained.
December 2025
November 2025
5 Commits • 2 Features
Nov 1, 2025November 2025 — Delivered two major capabilities in androidx/androidx: precision-pointer aware component sizing and XR-ready Material3 integration, focused on business value and developer experience. Implemented a feature-flag for compact sizing on precision pointer devices (ComposeMaterial3Flags.isPrecisionPointerComponentSizingEnabled) and refactored sizing state to a top-level MutableState for cross-component accessibility. Introduced material3-xr and material3-xr-adaptive libraries to provide an XR-ready API surface and adaptive components, including an improved API surface with WithAdaptiveXrComponents (optional enabled param) and internal visibility management. API tasks were aligned to INTERNAL_LIBRARY_WITH_API_TASKS, and related fixes stabilized the XR workflow. All builds and unit tests pass, reducing integration risk and enabling future immersive UI scenarios.
November 2025
5 Commits • 2 Features
Nov 1, 2025November 2025 — Delivered two major capabilities in androidx/androidx: precision-pointer aware component sizing and XR-ready Material3 integration, focused on business value and developer experience. Implemented a feature-flag for compact sizing on precision pointer devices (ComposeMaterial3Flags.isPrecisionPointerComponentSizingEnabled) and refactored sizing state to a top-level MutableState for cross-component accessibility. Introduced material3-xr and material3-xr-adaptive libraries to provide an XR-ready API surface and adaptive components, including an improved API surface with WithAdaptiveXrComponents (optional enabled param) and internal visibility management. API tasks were aligned to INTERNAL_LIBRARY_WITH_API_TASKS, and related fixes stabilized the XR workflow. All builds and unit tests pass, reducing integration risk and enabling future immersive UI scenarios.
October 2025
6 Commits • 2 Features
Oct 1, 2025October 2025 (androidx/androidx) monthly summary. Overview: - Explored and briefly integrated the AnimatedSpatialVisibility API to animate spatial XR content with customizable enter/exit transitions and integrated it into the XR ThreePaneScaffold to manage pane visibility and transitions, improving initial user immersion. This feature was subsequently rolled back to meet the Oct 22 M3 XR release deadline to maintain release stability. - Implemented stability and compatibility upgrades for navigation/UI components by updating library version references and pinning dependencies in the adaptive-navigation3 module. Key deliverables and changes: - Added AnimatedSpatialVisibility API and default XR ThreePaneScaffold integration (commit e7fd11e8787a7b6eba056384755824725a575df6). - Reverted AnimatedSpatialVisibility API and XR integration to satisfy release deadline (commits 5861f1f2f428ab49ec3f6c87a5c3dd49b25ccc88 and bcc5eb26539de965bce81829126bd36125947a4c). - Stability upgrades: pinned adaptive navigation/UI dependencies and updated version references (commits 6525f9e44ece8a78345fd7b6260ccb3223a66e9e, 04a8abf650d344e8e2298a5ace4e0e9075581503, 645ffc3342d07618d7d16c7416d15c268dcdb2dc). - Validation: presubmits passed and on-device tests performed; release notes adjusted accordingly. Impact and capabilities: - Business value: ensured release readiness while enabling forward-looking XR UX experimentation; stabilized cross-module dependencies to reduce risk in the M3 release. - Technical footprint: API design and XR scaffold integration, release governance with controlled feature landings and reverts, explicit dependency pinning for reliable builds. Technologies/skills demonstrated: - XR UI/UX API design and integration, release management, dependency/version management, build configuration, and test automation.
6 Commits • 2 Features
Oct 1, 2025October 2025 (androidx/androidx) monthly summary. Overview: - Explored and briefly integrated the AnimatedSpatialVisibility API to animate spatial XR content with customizable enter/exit transitions and integrated it into the XR ThreePaneScaffold to manage pane visibility and transitions, improving initial user immersion. This feature was subsequently rolled back to meet the Oct 22 M3 XR release deadline to maintain release stability. - Implemented stability and compatibility upgrades for navigation/UI components by updating library version references and pinning dependencies in the adaptive-navigation3 module. Key deliverables and changes: - Added AnimatedSpatialVisibility API and default XR ThreePaneScaffold integration (commit e7fd11e8787a7b6eba056384755824725a575df6). - Reverted AnimatedSpatialVisibility API and XR integration to satisfy release deadline (commits 5861f1f2f428ab49ec3f6c87a5c3dd49b25ccc88 and bcc5eb26539de965bce81829126bd36125947a4c). - Stability upgrades: pinned adaptive navigation/UI dependencies and updated version references (commits 6525f9e44ece8a78345fd7b6260ccb3223a66e9e, 04a8abf650d344e8e2298a5ace4e0e9075581503, 645ffc3342d07618d7d16c7416d15c268dcdb2dc). - Validation: presubmits passed and on-device tests performed; release notes adjusted accordingly. Impact and capabilities: - Business value: ensured release readiness while enabling forward-looking XR UX experimentation; stabilized cross-module dependencies to reduce risk in the M3 release. - Technical footprint: API design and XR scaffold integration, release governance with controlled feature landings and reverts, explicit dependency pinning for reliable builds. Technologies/skills demonstrated: - XR UI/UX API design and integration, release management, dependency/version management, build configuration, and test automation.
October 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for androidx/androidx focusing on XR capabilities and code quality improvements. The month delivered two major outcomes: (1) XR-ready UI capability added via HorizontalFloatingToolbar in Material 3 with full XR integration/override support and a dedicated XR shape token, and (2) strengthened code safety by enforcing lint for experimental APIs in ThreePaneScaffold. Key achievements: - Implemented XR-ready HorizontalFloatingToolbar in Material 3 for XR environments, including API definitions, overrides, default properties, and a dedicated XR shape token. Commits: dcfef96117b9c969aef92250650ee9b3137340f9 (Implement XR overrides `HorizontalFloatingToolbar`) and e99a7bef5ac19e6d9ac42e2b1b702caa6bc58537 (Re-pin XR Material3 to M3 1.4.0-alpha18). - Enforced lint rule for ThreePaneScaffold by removing suppression of BanInlineOptIn and applying @OptIn directly to the function, ensuring explicit use of experimental APIs. Commit: 495f6011b356554d356bc2f0c2d0acdc355abc71. Overall impact and accomplishments: - Accelerated XR feature readiness by delivering a reusable, API-driven HorizontalFloatingToolbar that integrates with Material 3, enabling consistent XR rendering and overrides across XR contexts. This supports faster feature rollouts and better consistency for XR-enabled apps. - Improved code quality and long-term maintainability by making experimental APIs explicit, reducing risk of silent API misuse and future lint-related regressions. Technologies/skills demonstrated: - XR development and integration with Material 3, API design, and design tokens for XR shapes. - Kotlin/Android development practices, including API overrides and compatibility management. - Code quality assurance through lint rule enforcement and @OptIn annotations. Month: 2025-07 Repository: androidx/androidx
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for androidx/androidx focusing on XR capabilities and code quality improvements. The month delivered two major outcomes: (1) XR-ready UI capability added via HorizontalFloatingToolbar in Material 3 with full XR integration/override support and a dedicated XR shape token, and (2) strengthened code safety by enforcing lint for experimental APIs in ThreePaneScaffold. Key achievements: - Implemented XR-ready HorizontalFloatingToolbar in Material 3 for XR environments, including API definitions, overrides, default properties, and a dedicated XR shape token. Commits: dcfef96117b9c969aef92250650ee9b3137340f9 (Implement XR overrides `HorizontalFloatingToolbar`) and e99a7bef5ac19e6d9ac42e2b1b702caa6bc58537 (Re-pin XR Material3 to M3 1.4.0-alpha18). - Enforced lint rule for ThreePaneScaffold by removing suppression of BanInlineOptIn and applying @OptIn directly to the function, ensuring explicit use of experimental APIs. Commit: 495f6011b356554d356bc2f0c2d0acdc355abc71. Overall impact and accomplishments: - Accelerated XR feature readiness by delivering a reusable, API-driven HorizontalFloatingToolbar that integrates with Material 3, enabling consistent XR rendering and overrides across XR contexts. This supports faster feature rollouts and better consistency for XR-enabled apps. - Improved code quality and long-term maintainability by making experimental APIs explicit, reducing risk of silent API misuse and future lint-related regressions. Technologies/skills demonstrated: - XR development and integration with Material 3, API design, and design tokens for XR shapes. - Kotlin/Android development practices, including API overrides and compatibility management. - Code quality assurance through lint rule enforcement and @OptIn annotations. Month: 2025-07 Repository: androidx/androidx
June 2025
5 Commits • 2 Features
Jun 1, 2025June 2025 (Month: 2025-06) focused on XR-ready extensibility and stability within androidx/androidx. Key outcomes include: (1) Introduced an XR-aware ComponentOverride extensibility framework for ShortNavigationBar and HorizontalFloatingToolbar (and FAB) to enable customization in XR environments; (2) Implemented XR-compatible Expressive NavigationBar with dedicated override scopes; (3) Maintained XR integration stability through dependency maintenance by pinning and upgrading Material3 and Material3 Adaptive to newer alpha versions across XR tests and library builds; (4) Overall, improved customization capabilities for XR UX while reducing build-time risks and ensuring compatibility with the latest Material3 stack.
5 Commits • 2 Features
Jun 1, 2025June 2025 (Month: 2025-06) focused on XR-ready extensibility and stability within androidx/androidx. Key outcomes include: (1) Introduced an XR-aware ComponentOverride extensibility framework for ShortNavigationBar and HorizontalFloatingToolbar (and FAB) to enable customization in XR environments; (2) Implemented XR-compatible Expressive NavigationBar with dedicated override scopes; (3) Maintained XR integration stability through dependency maintenance by pinning and upgrading Material3 and Material3 Adaptive to newer alpha versions across XR tests and library builds; (4) Overall, improved customization capabilities for XR UX while reducing build-time risks and ensuring compatibility with the latest Material3 stack.
June 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for androidx/androidx: Focused on IDE configuration maintenance to standardize developer tooling without affecting runtime behavior. All changes passed presubmit tests and were committed to the repository.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for androidx/androidx: Focused on IDE configuration maintenance to standardize developer tooling without affecting runtime behavior. All changes passed presubmit tests and were committed to the repository.
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Quality Metrics
Correctness97.2%
Maintainability91.4%
Architecture92.8%
Performance88.6%
AI Usage25.0%
Skills & Technologies
Programming Languages
GradleGroovyJavaKotlinTOML
Technical Skills
API DesignAndroid DevelopmentAndroid developmentAnimationBuild ConfigurationComponent OverridesComponent OverridingComposeCross-Platform DevelopmentDependency ManagementGradleGradle Build SystemJetpack ComposeKotlinSoftware Architecture
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline