问题：
Eclipse中导入Android4.1.1源码build path错误
missing required library: 'out/target/common/obj/JAVA_LIBRARIES/google-common_intermediates/javalib.jar'
missing required library: 'out/target/common/obj/JAVA_LIBRARIES/gsf-client_intermediates/javalib.jar'
解决方法：
.classpath 删除下面两行
<classpathentry kind="lib" path="out/target/common/obj/JAVA_LIBRARIES/google-common_intermediates/javalib.jar"/>
<classpathentry kind="lib" path="out/target/common/obj/JAVA_LIBRARIES/gsf-client_intermediates/javalib.jar"/>
添加 <classpathentry kind="lib" path="/work/froyo/out/target/common/obj/JAVA_LIBRARIES/android-common_intermediates/javalib.jar"/>
在eclipse中修改
2.2.1. 通过create file from existing source 导入源代码
2.2.2. 展开packages/providers/CalendarProvider/src
2.2.3. 展开包: com.android.providers.calendar
2.2.4. 右键点击包com.android.providers.calendar
2.2.5. 选择 "new file"
2.2.6. 在对话框中选择点击 "Advanced >>" 按钮, 可以看到"Link to file in the file system" checkbox，
2.2.7. 勾选上 checkbox. 这时 "Browse..." 可用.
2.2.8. 点击 "Browse..." 按钮,选择EventLogTags.java (e.g.,out/target/common/obj/APPS/CalendarProvider_intermediates/src/src/com/android/providers/calendar/EventLogTags.java)
2.2.9. 点击OK
2.2.10. 点击 Finish (in "New File")
2.3 同样的方式修改com.android.providers.contacts的问题
这样在problem view 窗口就不会有error，只有warning了，就可debug了。。。。。