导入工程，添加jar包之后还是报错？

Description Resource Path Location Type

The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files VoiceEncoder.java /Agent/src/com/voicerecord line 1

Java Problem    

Project has no project.properties file! Edit the project properties to set one.

Agent     Unknown Android Target Problem

The project was not built since its build path is incomplete. Cannot find the class file for java.lang.Object. Fix the build path then try building this project

Agent   Unknown Java Problem

原因：android   系统  库丢失所致，

解决办法：@ 1   换一下高版本的SDK

                @  2  Clean 一下工程

                                  OK   搞定！