不能使用.aidl文件跨库项目？

在重新使用code的精神，我试图创建一些库项目。但是，我似乎碰到定义.aidl跨越的库文件存在问题。这里的问题是：

In the spirit of re-using code, I'm trying to create a few library projects. However, I seem to run into a problem defining .aidl files that span the libraries. Here is the problem:

在库中的我有Foo.java和Foo.aidl。 Foo.java是Parcelable所以AIDL声明是：

In library A I have Foo.java and Foo.aidl. Foo.java is Parcelable so the aidl declaration is:

Foo.aidl:

package com.example.library.A;
parcelable Foo;

现在我试图创建库B.在库B I要定义使用类Foo一个服务接口：

Now I'm trying to create library B. In library B I want to define a service interface that uses class Foo:

IMyService.aidl:

package com.example.library.B;
import com.example.library.A.Foo;

interface IMyService {
    void requestSomething(in Foo fooBug);
}

该文件不编译抱怨它无法找到富进口。我试过引用库中的一个，我已经尝试添加库项目作为一个外部JAR，但既不工作。

This file does not compile complaining that it couldn't find the import for Foo. I've tried referencing library A and I've tried adding the library project as an external jar, but neither work.

有没有我不知道的限制？我是不是做错了什么与我的项目设置??

Is there a limitation that I don't know about? Am I doing something wrong with my project setup??

我也许应该提及我用库中的直接，没有问题，所以我相信一个项目，lib目录是没有问题的。

I should probably mention that I've used library A directly in a project with no problem so I'm confident that lib A is not the problem.