功能启用说明

配置和使用

source 之后输入命令get_build_varTARGET_DEVICE_DIR找到对应目标文件夹 （比如device/rockchip/rk3126c/）

在目标文件夹下有三个文件夹，分别为：

 1．preinstall  安装不可卸载应用；

2．preinstall_del_forever  安装可永久卸载应用；

3．preinstall_del  安装卸载后恢复出厂设置后自动恢复的应用。

顺利的话，make之后会在$OUT/oem 目录，生成对应的文件夹

实例 在device\rockchip\rk356x\rk3568_t\preinstall 下创建文件夹包含预制的apk和Android.mk

在preinstall下的mk这样写

LOCAL_PATH := $(my-dir)include $(CLEAR_VARS)
LOCAL_MODULE := DisplayLink
LOCAL_MODULE_CLASS := APPS
LOCAL_MODULE_PATH := $(TARGET_OUT_ODM)/bundled_persist-app
# LOCAL_SRC_FILES := $(LOCAL_MODULE)$(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_REPLACE_PREBUILT_APK_INSTALLED := $(LOCAL_PATH)/DisplayLink.apk
LOCAL_CERTIFICATE := PRESIGNED
#LOCAL_DEX_PREOPT := false
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_JNI_SHARED_LIBRARIES_ABI := None
MY_LOCAL_PREBUILT_JNI_LIBS := \MY_APP_LIB_PATH := $(TARGET_OUT_ODM)/bundled_persist-app/$(LOCAL_MODULE)/lib/$(LOCAL_JNI_SHARED_LIBRARIES_ABI)
ifneq ($(LOCAL_JNI_SHARED_LIBRARIES_ABI), None)
$(warning MY_APP_LIB_PATH=$(MY_APP_LIB_PATH))
LOCAL_POST_INSTALL_CMD :=     mkdir -p $(MY_APP_LIB_PATH)     $(foreach lib, $(MY_LOCAL_PREBUILT_JNI_LIBS), ; cp -f $(LOCAL_PATH)/$(lib) $(MY_APP_LIB_PATH)/$(notdir $(lib)))
endif
include $(BUILD_PREBUILT)

preinstall_del 下的 

LOCAL_PATH := $(my-dir)include $(CLEAR_VARS)
LOCAL_MODULE := TouchStudio
LOCAL_MODULE_CLASS := APPS
LOCAL_MODULE_PATH := $(TARGET_OUT_OEM)/bundled_uninstall_back-app
LOCAL_SRC_FILES := $(LOCAL_MODULE)$(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_CERTIFICATE := PRESIGNED
#LOCAL_DEX_PREOPT := false
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_JNI_SHARED_LIBRARIES_ABI := None
MY_LOCAL_PREBUILT_JNI_LIBS := \MY_APP_LIB_PATH := $(TARGET_OUT_OEM)/bundled_uninstall_back-app/$(LOCAL_MODULE)/lib/$(LOCAL_JNI_SHARED_LIBRARIES_ABI)
ifneq ($(LOCAL_JNI_SHARED_LIBRARIES_ABI), None)
$(warning MY_APP_LIB_PATH=$(MY_APP_LIB_PATH))
LOCAL_POST_INSTALL_CMD :=     mkdir -p $(MY_APP_LIB_PATH)     $(foreach lib, $(MY_LOCAL_PREBUILT_JNI_LIBS), ; cp -f $(LOCAL_PATH)/$(lib) $(MY_APP_LIB_PATH)/$(notdir $(lib)))
endif
include $(BUILD_PREBUILT)

preinstall_del_forever 下的

LOCAL_PATH := $(my-dir)include $(CLEAR_VARS)
LOCAL_MODULE := DeadPixelFix
LOCAL_MODULE_CLASS := APPS
LOCAL_MODULE_PATH := $(TARGET_OUT_ODM)/bundled_uninstall_gone-app
LOCAL_SRC_FILES := $(LOCAL_MODULE)$(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_CERTIFICATE := PRESIGNED
LOCAL_DEX_PREOPT := false
LOCAL_ENFORCE_USES_LIBRARIES := false
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_JNI_SHARED_LIBRARIES_ABI := None
MY_LOCAL_PREBUILT_JNI_LIBS := \MY_APP_LIB_PATH := $(TARGET_OUT_ODM)/bundled_uninstall_gone-app/$(LOCAL_MODULE)/lib/$(LOCAL_JNI_SHARED_LIBRARIES_ABI)
ifneq ($(LOCAL_JNI_SHARED_LIBRARIES_ABI), None)
$(warning MY_APP_LIB_PATH=$(MY_APP_LIB_PATH))
LOCAL_POST_INSTALL_CMD :=     mkdir -p $(MY_APP_LIB_PATH)     $(foreach lib, $(MY_LOCAL_PREBUILT_JNI_LIBS), ; cp -f $(LOCAL_PATH)/$(lib) $(MY_APP_LIB_PATH)/$(notdir $(lib)))
endif
include $(BUILD_PREBUILT)

如果开机apk不会安装

有报错：
05-15 02:29:14.155 492 492 W PackageManager: Failed to scan /odm/bundled_persist-app/DisplayLink: No APK Signature Scheme v2 signature in package /odm/bundled_persist-app/DisplayLink/DisplayLink.apk

在device/rockchip/rk356x/rk3568_t/preinstall/DisplayLink/Android.mk中
把LOCAL_SRC_FILES := $(LOCAL_MODULE)$(COMMON_ANDROID_PACKAGE_SUFFIX)修改为
LOCAL_REPLACE_PREBUILT_APK_INSTALLED := $(LOCAL_PATH)/DisplayLink.apk