Android Signed Apps

I am trying to publish an app which can be used by other applications (meaning others apps can invoke my application to do some se开发者_开发知识库rvice for them). However I see that when I sign my app using my default.keystore and other application (who want to communicate with my app) which are signed by some other default.keystore cannot communicate or invoke my app.

If both my app and other app are signed with same keystore they are able to communicate.

Can you someone please guide me how can I sign an application and let other signed app invoke it?

if you are using eclipse try this...

right click your project ,select Android Tools and select Export Signed application package

Then select *create new key store.*give all the details and do as described.