34,333
edits
Changes
→Adding the Utility Classes to the Project
Select all nine files in this folder and copy them. Return to Android Studio and paste the files onto the com.example.inappbilling.inappbilling.util package in the Project tool window. Verify that the project hierarchy now matches Figure 55-4:
[[Image:android_studio_in_app_billing_utils_added3.png|The hierarchy of a fully configured Android Studio in app billing project]]
Figure 55-4
== Designing the User Interface ==
