How do I Connect to remote service from a different .apk

First of开发者_高级运维f I have seen this:

Remote Service as apk

And it does not help me at all. Here is the deal. I have one apk that creates a remote service (call it A). I then have another apk (call it B). How can I connect B to A without include the AIDL file or a jar file. I would think that this would be possible.

** UPDATE **

So I have copied the AIDL file into B and created an to the service in A for the AIDL file. I can conntect to the remote service, and bind to the service now. However when I try to call a method that exists in the service I get:

java.lang.SecurityException: Binder invocation to an incorrect interface

Having trouble finding any help on this. Any ideas?

** PROBLEM SOLVED ** The AIDL file had to be in a package with the same name in the project B. Thanks for your help Peter.

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You have to know the format of the data that is sent between two separate processes. This is needed for serialization/deserialization of the data to Java objects.

AIDL is a description language to describe the structure of objects.

So, you have two options:

1. Either you have an AIDL, or

2. your code explicitly know the format to do the de-/serialization. This is the implementation of Parcelable. This implementation could be inside a jar that you include in your app.