Android11 系统重定义ro.build.display.id

目录

1.修改buildinfo.sh脚本

2.修改Makefile

3.定义全局变量

---

Android系统默认ro.build.display.id的属性来定义编译的版本号，但是现在项目上需要根据jenkins服务器动态版本号进行修改ro.build.display.id这个属性

1.修改buildinfo.sh脚本

{$PROJECT_PATH}/LINUX/android/build/tools/buildinfo.sh

在上述文件中加入下面代码，这边只是一个示例，读者可以根据自己具体的需求加入，当定义了BUILD_DISPLAY_ID_OVERWRITE，则会重新赋值ro.build.display.id

if [ -n "${BUILD_DISPLAY_ID_OVERWRITE}" ]; then
    echo "ro.build.display.id=${BUILD_DISPLAY_ID_OVERWRITE}"
fi

2.修改Makefile

{$PROJECT_PATH}/LINUX/android/build/core/Makefile

在上述Makefile中添加BUILD_DISPLAY_ID_OVERWRITE="$(BUILD_DISPLAY_ID_OVERWRITE)"

如下所示

$(intermediate_system_build_prop): $(BUILDINFO_SH) $(BUILDINFO_COMMON_SH) $(INTERNAL_BUILD_ID_MAKEFILE) $(BUILD_SYSTEM)/version_defaults.mk $(system_prop_file) $(INSTALLED_ANDROID_INFO_TXT_TARGET) $(API_FINGERPRINT) $(POST_PROCESS_PROPS)
	@echo Target buildinfo: $@
	@mkdir -p $(dir $@)
	$(hide) echo > $@
	$(hide) PRODUCT_BRAND="$(PRODUCT_SYSTEM_BRAND)" \
	        PRODUCT_MANUFACTURER="$(PRODUCT_SYSTEM_MANUFACTURER)" \
	        PRODUCT_MODEL="$(PRODUCT_SYSTEM_MODEL)" \
	        PRODUCT_NAME="$(PRODUCT_SYSTEM_NAME)" \
	        PRODUCT_DEVICE="$(PRODUCT_SYSTEM_DEVICE)" \
	        $(call generate-common-build-props-with-product-vars-set,system,$@)
	$(hide) TARGET_BUILD_TYPE="$(TARGET_BUILD_VARIANT)" \
	        TARGET_BUILD_FLAVOR="$(TARGET_BUILD_FLAVOR)" \
	        TARGET_DEVICE="$(TARGET_DEVICE)" \
	        PRODUCT_DEFAULT_LOCALE="$(call get-default-product-locale,$(PRODUCT_LOCALES))" \
	        PRODUCT_DEFAULT_WIFI_CHANNELS="$(PRODUCT_DEFAULT_WIFI_CHANNELS)" \
	        BUILD_ID="$(BUILD_ID)" \
	        BUILD_KEYS="$(BUILD_KEYS)" \
	        DISPLAY_BUILD_NUMBER="$(DISPLAY_BUILD_NUMBER)" \
	      + BUILD_DISPLAY_ID_OVERWRITE="$(BUILD_DISPLAY_ID_OVERWRITE)"  \
	        DATE="$(DATE_FROM_FILE)" \
	        BUILD_USERNAME="$(BUILD_USERNAME)" \
	        BUILD_HOSTNAME="$(BUILD_HOSTNAME)" \

3.定义全局变量

在使用编译命令之前需要在控制的终端中设置好环境变量

export BUILD_DISPLAY_ID_OVERWRITE=V0.0.1

 然后重新编译，会在如下路径的build.prop中能体现出来

{$PROJECT_PATH}/LINUX/android/out/target/product/{$Target}/system/build.prop

 然后将镜像烧写到DUT中，开机之后使用下属命令，查看是否有变化

getprop ro.build.display.id

V0.0.1