下面的内容来自Android官方网站，由于访问这个网站需要FQ，不方便，所以我把部分内容copy下来了，不保证内容是最新的。
Source
Overview
Codelines, Branches, and Releases
Codenames, Tags, and Build Numbers
Project Roles
Brand Guidelines
Licenses
FAQ
Downloading and Building
Establishing a Build Environment
Downloading the Source
Building the System
Compiling with Jack
Running Builds
Building Kernels
Known Issues
Developing
Using Repo
Using Eclipse
Learning Git
Adding a New Device
Understanding 64-bit Builds
Contributing
Life of a Patch
Submitting Patches
View Patches
Life of a Bug
Reporting Bugs
Code Style Guidelines
Community
Devices
Interfaces
Accessories
Audio Accessories
AOA
AOA 2.0
AOA 1.0
Stylus
Audio
Terminology
Implementatio
Data Formats
Attributes
Warmup
Latency
Contributors Design Measure Light Testing Circuit Audio Loopback Dongle Measurements Applications
Priority Inversion
Sample Rate Conversion
Debugging
MIDI
MIDI Architecture
MIDI Test Procedure
USB Digital Audio
TV Audio
Bluetooth
Camera
Camera HAL3
HAL Subsystem
Metadata and Controls
3A Modes and State
Output and Cropping
Errors and Streams
Request Creation
Version Support
DRM
Graphics
Architecture
Implementation
OpenGL ES Testing
Building test programs
Porting the test framework
Running the tests
Automating the tests
Using special test groups
Integrating with Android CTS
Input
Overview
Key Layout Files
Key Character Map Files
Input Device Configuration Files
Migration Guide
Keyboard Devices
Touch Devices
Diagnostics
Getevent
Validate Keymaps
Media
SoC Dependencies
OEM Dependencies
Sensors
Sensor stack
Reporting modes
Suspend mode
Power consumption
Interaction
HAL interface
Batching
Sensor types
Version deprecation
Storage
Traditional Storage
Adoptable Storage
Device Configuration
Configuration Examples
TV
HDMI-CEC control service
Core Technologies
ART and Dalvik
Bytecode Format
.Dex Format
Instruction Formats
Constraints
Configuration
Garbage Collection
Configuration
Carrier Customization
File System
Kernel Configuration
Kernel Network Tests
Low RAM
OpenGLRenderer
Runtime Permissions
UICC
Visual Voicemail
Data Usage
Network interface statistics overview
Excluding Network Types from Data Usage
Tethering Data
Usage Cycle Reset Dates
Kernel Overview
Data Usage Tags Explained
Kernel Changes
Debugging
AddressSanitizer
Dumpsys
Native Memory Use
Network Use
RAM Use
Device Administration
Implementation
Multiple Users
Managed Profiles
Provisioning
Multiuser Apps
Testing Setup
HAL File Reference
OTA Updates
OTA Tools
Block-based OTA
Inside OTA Packages
Device-Specific Code
Reducing OTA Size
Signing Builds for Release
Power
Power Management
Component Power
Device Power
Power Values
Battery Use
Testing Infrastructure
Start Here
Machine Setup
Working with Devices
Test Lifecycle
Option Handling
An End-to-End Example
Package Index
Security
Overview
Kernel Security
App Security
Implementing Security
Updates and Resources
Enhancements
Android 6.0
Android 5.0
Android 4.4
Android 4.3
Android 4.2
Android 4.1
Acknowledgements
Bulletins
Authentication
Fingerprint HAL
Gatekeeper
Keystore
Features
Implementer's Reference
Trusty TEE
Trusty API Reference
Full Disk Encryption
SELinux
Concepts
Implementation
Customization
Validation
Verified Boot
Verifying Boot
Implementing dm-verity
Compatibility
Overview
Compatibility Definition Document (CDD)
Compatibility Test Suite
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Run CTS Verifier
Rotation Vector Crosscheck
Interpret Results
Develop CTS
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