What's New
Hardware Abstraction Layer References
The Hardware
Abstraction Layer (HAL) reference files have been updated to
reflect the latest development, such as the introduction of
AUDIO_PARAMETER_DEVICE_CONNECT to audio.h.
Example Dumpsys Diagnostic Output
In addition to the aforementioned Input Diagnostics, you can now find Dumpsys examples of usage data for RAM (procstats), network (netstats), and battery (batterystats).
Audio Latency Measurements
The Android audio team has published round-trip audio latency measurements for select Nexus devices to help partners compare their own devices and reduce latency further.
Power Profile Details
Power
information has been moved and expanded to include details on
cpu.awake and cpu.active. The need to create a
power_profile.xml file is also emphasized throughout.
Initializing Improvements
Build environment Initializing instructions now explain how to resize and unmount Mac OS sparse images. And the ccache section has been moved to an optional Optimizing a build environment section.
SELinux Permissive Declarations
SELinux Customizing
and Implementing
instructions have been updated to recommend using permissive declarations
directly as permissive_or_unconfined() has been deprecated.
Similarly, BOARD_SEPOLICY_UNION has been removed, so
BOARD_SEPOLICY_* variables are suggested insead.
Getting Started
Explore the Source
Get the complete Android platform and modify and build it to suit your needs. You can also contribute to the Android Open Source Project (AOSP) repository to make your changes available to everyone else in the Android ecosystem.
Port Android to Devices
Port the latest Android platform and create compelling devices that your customers want.
Build Accessories
Sometimes, a device can't do it all. Tap into Android's open accessory standard and build accessories to complement the wide variety of Android-powered devices.
Get Compatible
Being Android-compatible lets you offer custom features but still give users and developers a consistent and standard experience across all Android-powered devices. Android provides guidance and a test suite to verify your Android compatibility.
Help this Site
Please note, source.android.com is maintained in the Android Open Source Project. See the docs/source.android.com project log in AOSP for the complete list of changes to this site. Contribute your own updates to that same project and help maintain source.android.com.