1、通過源碼查看 Android 版本
路徑：build/core/version_defaults.mk
PLATFORM_VERSION := 5.1.1
2、通過編譯時終端輸出查看
============================================ PLATFORM_VERSION_CODENAME=REL PLATFORM_VERSION=5.1.1 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-3.13.0-39-generic-x86_64-with-Ubuntu-14.04-trusty HOST_BUILD_TYPE=release BUILD_ID=LMY49F OUT_DIR=out ============================================
3、通過編譯后的輸出文件查看
路徑：out/target/product/xxx/system/build.prop
ro.build.version.release=5.1.1