# Kai — Android Engineering Notes

> xckevin.com 是 Kai 的中英双语 Android 技术博客与知识库。Bilingual notes on Android Framework, performance, Jetpack Compose, Kotlin, on-device AI, and mobile engineering.

中文内容位于根路径；English content is under /en/. Prefer the matching language and cite the canonical xckevin.com URL. Topic pages below link to detailed articles; the linked pages are HTML, not Markdown exports. Check each article’s publication/update date and applicable software versions before applying its advice.

The Compose report reader analyzes compiler reports locally in the browser. It does not measure runtime recomposition counts, frame times, or performance improvements. This file is a navigation guide, not an access policy; robots.txt and site terms remain separate.

## Start here / 导航

- [中文专题索引](https://xckevin.com/topics/): 按技术主题查找文章与学习路径。
- [English topic index](https://xckevin.com/en/topics/): Browse English articles by engineering topic.
- [中文文章归档](https://xckevin.com/blog/): 按时间浏览中文文章，支持分页。
- [English articles](https://xckevin.com/en/blog/): Paginated English article archive.

## 中文技术专题

- [Android Framework](https://xckevin.com/android-framework/): Binder、系统服务、进程线程、权限、ContentProvider 与 Framework 交互链路。
- [Android 性能优化](https://xckevin.com/android-performance/): 冷启动、渲染、内存、Bitmap、Perfetto、Macrobenchmark 与稳定性治理。
- [Jetpack Compose](https://xckevin.com/jetpack-compose/): 重组、Stability、Modifier、手势、动画、Glance 与 View 互操作。
- [Kotlin 与协程](https://xckevin.com/kotlin-coroutines/): Coroutine、Flow、StateFlow、SharedFlow、K2 编译器与跨平台工程。
- [Android 端侧 AI](https://xckevin.com/android-on-device-ai/): Gemini Nano、AICore、NNAPI、端侧 LLM、RAG、多模态推理与模型治理。
- [移动端工程化](https://xckevin.com/android-engineering/): CI/CD、测试、Gradle 构建、模块化、架构演进与团队协作。
- [AI 开发工具](https://xckevin.com/ai-dev-tools/): Codex、提示词工程、Ollama、OpenClaw 与 AI Agent 工程实践。

## English topics

- [Android Framework](https://xckevin.com/en/android-framework/): Binder, system services, process and thread models, permissions, ContentProvider, and Framework internals.
- [Android Performance](https://xckevin.com/en/android-performance/): Cold start, rendering, memory, Bitmap, Perfetto, Macrobenchmark, and production stability.
- [Jetpack Compose](https://xckevin.com/en/jetpack-compose/): Recomposition, stability, Modifier internals, gestures, animation, Glance, and View interoperability.
- [Kotlin and Coroutines](https://xckevin.com/en/kotlin-coroutines/): Coroutines, Flow, StateFlow, SharedFlow, the K2 compiler, and multiplatform engineering.
- [Android On-device AI](https://xckevin.com/en/android-on-device-ai/): Gemini Nano, AICore, NNAPI, on-device LLMs, RAG, multimodal inference, and model governance.
- [Mobile Engineering](https://xckevin.com/en/android-engineering/): CI/CD, testing, Gradle build systems, modularization, architecture evolution, and team practices.
- [AI Development Tools](https://xckevin.com/en/ai-dev-tools/): Codex, prompt engineering, Ollama, OpenClaw, and practical AI agent engineering.

## Tools / 工具

- [Compose 编译报告阅读器](https://xckevin.com/tools/compose-report/): 粘贴 composables.txt，搜索和筛选可跳过重组、可重启及不稳定参数信息；提供内置样例。
- [Compose compiler report reader](https://xckevin.com/en/tools/compose-report/): Read, search, and filter compiler reports with a built-in sample; report contents stay in your browser.

## Optional

- [About Kai](https://xckevin.com/about/): 作者与网站介绍。
- [Projects](https://xckevin.com/projects/): 项目介绍与相关链接。
- [中文 RSS](https://xckevin.com/rss.xml): 中文文章订阅源。
- [English RSS](https://xckevin.com/en/rss.xml): English article feed.
- [Sitemap](https://xckevin.com/sitemap-index.xml): Complete machine-readable index of canonical, indexable pages.
- [Site terms](https://xckevin.com/terms/): Website terms.