报错内容：The type org.xmlpull.v1.XmlPullParser cannot be resolved. It is indirectly referenced from required .class files 原因：XmlPullParser这个类依赖于 xstream， 解决办法：缺少xmlpull.jar 这个jar包，资源和jar包下载http://pan.baidu.com/s/1o8qGS4q
