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Analyzes Android build files and R8 keep rules to identify redundancies, broad package-wide rules, and rules that subsume library consumer keep rules. Use when developers want to optimize their app's size, remove redundant or overly broad keep rules, or troubleshoot Proguard configurations.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Helps developers integrate, debug, and resolve Play Engage SDK implementation issues. Use when adding Engage SDK support, generating publishing code, mapping data classes to entities, or fixing SDK-related errors.
Use this skill when upgrading or migrating an Android project from any legacy Google Play Billing Library (PBL) version to the latest stable version of PBL.
Instructions to make or update an app's UI so that it adapts to different Android devices including phones, tablets, foldables, laptops, desktop, TV, Auto and XR. It includes how to handle different window sizes, pointing devices (such as mouse) and text entry devices (such as keyboard) using the Compose MediaQuery API. It also covers multi-pane layouts using Navigation3 Scenes, adaptive UI components (such as buttons) with varying target sizes, and adaptive layouts (including navigation areas - nav rails and nav bars) using the Compose Grid and FlexBox APIs.
Provides a structured workflow for migrating an Android XML View to Jetpack Compose. This skill details the step-by-step process, from planning and dependency setup, to theming and layout migration, validation and XML cleanup. Use this skill when you need to migrate an XML View to Jetpack Compose in an Android project. It solves the problem of converting the UI of a legacy XML View into modern, declarative Compose components while maintaining interoperability.
Use this skill to integrate the Jetpack Compose Styles API into an Android project. This skill guides you through upgrading dependencies, setting up component themes, making custom components styleable, and migrating existing layout properties to use unified styles. Migrate custom design system components, replace hard coded parameters with Style attributes, and use Modifier.styleable for interaction states.
Review Android or Kotlin Multiplatform projects for UI, domain, and data layer consistency. Use when checking feature structure, layer boundaries, model ownership, mappers, use cases, repositories, TODO/FIXME comments, Compose UI flows, performance bottlenecks, or platform-specific separation.
| name | r8-analyzer |
| description | Analyzes Android build files and R8 keep rules to identify redundancies, broad package-wide rules, and rules that subsume library consumer keep rules. Use when developers want to optimize their app's size, remove redundant or overly broad keep rules, or troubleshoot Proguard configurations. |
| license | Complete terms in LICENSE.txt |
| metadata | {"author":"Google LLC","last-updated":"2026-06-09","keywords":["R8","proguard","keep rules","app size","optimization"]} |
build.gradle, build.gradle.kts, and gradle.properties.android.enableR8.fullMode=false is removed from gradle.properties.Inspect build.gradle, build.gradle.kts, and gradle.properties and
libs.versions.toml to get the R8 version
If R8 >= 9.3.7-dev : Proceed to Path A (Quantitative).
If R8 < 9.3.7-dev : Proceed to Path B (Heuristic).
protobuf package are mandatory.analysis.txt for scores and rule impact
metrics. Proceed to Step 3.(Use ONLY if quantitative data generation is not possible)
proguard-rules.pro.