很多时候项目里面会用到aidl，为了能编译到系统必然会用到Androi.mk。使用常用的Android.mk编译会出现如下错误：

需要修改Android.mk文件，加入LOCAL_SRC_FILES += $(call all-Iaidl-files-under, src/com/hcn/autobt/protocol)

=====================================Android.mk===================================================

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := eng

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_SRC_FILES += $(call all-Iaidl-files-under, src/com/hcn/autobt/protocol)

LOCAL_STATIC_JAVA_LIBRARIES += android-support-v4

LOCAL_PACKAGE_NAME := AutoBTMusic

include $(BUILD_PACKAGE)

=====================================Android.mk===================================================