The Android Standard Development Kit (Android SDK) does not include all the packages and classes we need for development. For example, maps and advertising-related classes may not be included. However, we can download and install them with the Android SDK Manager. TABLE C.1 shows the possible extra steps needed.
Steps 1 and 2 relate to the development environment, and we only need to perform them once. Steps 3, 4, and 5 are project related, and we need to perform them for each project.