如何从源码包中查看Android的版本号

源码版本号，可以在文件（build\core\version_defaults.mk）中找到：

PLATFORM_DISPLAY_VERSION := 13

ifndef PLATFORM_SDK_VERSION
  # This is the canonical definition of the SDK version, which defines
  # the set of APIs and functionality available in the platform.  It
  # is a single integer that increases monotonically as updates to
  # the SDK are released.  It should only be incremented when the APIs for
  # the new release are frozen (so that developers don't write apps against
  # intermediate builds).  During development, this number remains at the
  # SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
  # the code-name of the new development work.

  # When you increment the PLATFORM_SDK_VERSION please ensure you also
  # clear out the following text file of all older PLATFORM_VERSION's:
  # cts/tests/tests/os/assets/platform_versions.txt
  PLATFORM_SDK_VERSION := 33
endif


DEFAULT_PLATFORM_VERSION := TP1A
.KATI_READONLY := DEFAULT_PLATFORM_VERSION
MIN_PLATFORM_VERSION := TP1A
MAX_PLATFORM_VERSION := TP1A

PLATFORM_VERSION := 
PLATFORM_SDK_VERSION :=