If you try to add the Google library android for the in-app billing, you will have this error: interface IInAppBillingService should be declared in a file called com\android\vending\billing\IInAppBillingService.aidl.

We will see how to solve this issue.

The error

In its tutorial (http://developer.android.com/training/in-app-billing/preparing-iab-app.html#GetSample), Google explains :

To add the In-app Billing Version 3 library to your existing In-app Billing project:

Copy the IInAppBillingService.aidlfile to your Android project.

• If you are using Eclipse: Import the IInAppBillingService.aidl file into your /src directory.

Error on IInAppBillingService.aidl

That is not exactly true. If you do that, you will have this error: IInAppBillingService should be declared in a file called com\android\vending\billing\IInAppBillingService.aidl.

The solution

• Right click on src and make a new package: com.android.vending.billing.

Eclipse new package

New package com.android.vending.billing

• Move the class IInAppBillingService.aidl in this new package (you can do that with the mouse).

Move InAppBillingService.aidl in the new package

• Result: you can build your project (if you are not on built automatically). You should see:

In app billing solution

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