Android 查看Android版本的方法

1、通过源码查看 Android 版本

路径：build/core/version_defaults.mk

PLATFORM_VERSION := 5.1.

2、通过编译时终端输出查看

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=5.1.
TARGET_PRODUCT=rk3288
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=cortex-a15
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.13.--generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=LMY49F
OUT_DIR=out
============================================

3、通过编译后的输出文件查看

路径：out/target/product/xxx/system/build.prop

ro.build.version.release=5.1.