LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE_TAGS := user LOCAL_STATIC_JAVA_LIBRARIES := libdom4j LOCAL_SRC_FILES := $(call all-java-files-under, src) LOCAL_PACKAGE_NAME := CoolReader include $(BUILD_PACKAGE) include $(CLEAR_VARS) LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := libdom4j:dom4j-1.6.1.jar include $(BUILD_MULTI_PREBUILT)
关键在于：
LOCAL_STATIC_JAVA_LIBRARIES := libarity 和 LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := libdom4j:dom4j-1.6.1.jar
其实libdom4j是个名字可以随便取，但是两个属性的值要一样就好了，但是后面那个冒号里面就一定要写你的jar包名，，你的jar包一定放在工程的根目录就是和mk文件的同级目录。
要注意：libdom4j这个名一定要是唯一的，要不编译就会出错，比如有两个应用里都用到了libdom4j这个包名，那么在编译时就会出现一下的错误信息：
***/packages/apps/calculator:MODULE.TARGET.JAVA.LIBRARIES.libarityalready defined by packages/apps/coolReader
意思就是用两处定义了libarity，一处是/packages/apps/calculator,另一处是packages/apps/coolReader
人生好如足球赛,看自家总是无奈,对人家总是优待,
