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base repository: android/compose-samples
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compare: performance-improvements
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  • 2 commits
  • 13 files changed
  • 1 contributor

Commits on Jul 16, 2025

  1. [Jetcaster] feat: Add Baseline Profile generation and benchmarking 

    This commit introduces Baseline Profile generation and macrobenchmarking capabilities to the Jetcaster sample.

Key changes:

*   **New `benchmark` module:** A new `:mobile:benchmark` module has been added to house Baseline Profile generation and macrobenchmark tests.
*   **Dependencies:**
    *   Added `androidx.benchmark:benchmark-macro-junit4` for macrobenchmarking.
    *   Added `com.android.test` plugin for the benchmark module.
*   **Baseline Profile Generation:**
    *   `StartupBaselineProfile.kt` defines a `BaselineProfileRule` to collect profiles during a typical startup and scroll scenario on the home screen.
    *   `HOME_CONTENT_GRID_TAG` test tag added to the main content grid in `Home.kt` for reliable UI Automator interaction.
*   **Startup Benchmarks:**
    *   `StartupBenchmark.kt` includes tests to measure cold startup performance with different compilation modes: `None`, `Partial` (with Baseline Profile), and `Full`.
    *   Custom metrics `BaselineProfileMetrics.kt` are introduced to track JIT compilation time and class initialization time, which are expected to decrease with effective Baseline Profiles.
*   **Helper Utilities:**
    *   `Util.kt` in the benchmark module provides helper functions for UI Automator interactions, like waiting for elements and dumping the window hierarchy.
*   **Configuration Updates:**
    *   `settings.gradle.kts` now includes the `:mobile:benchmark` module.
    *   The root `build.gradle.kts` registers the `com.android.test` plugin.
    *   `Jetcaster/mobile/build.gradle.kts` enables `isShrinkResources = true` for release builds.
    *   `JetcasterApp.kt` enables `testTagsAsResourceId` for UI testing.
    @AjeshRPai
    AjeshRPai committed Jul 16, 2025
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    3eba553 View commit details
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  2. Merge branch 'main' into performance-improvements

    @AjeshRPai
    AjeshRPai committed Jul 16, 2025
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    227da51 View commit details
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