In the New Project window, set the Application name field to AndroidSample. The application name is the name by which the application will be referenced and identified within Android Studio and is also the name that will be used when the completed application goes on sale in the Google Play store. The Package Name is used to uniquely identify the application within the Android application ecosystem. It should be based on the reversed URL of your domain name followed by the name of the application.
For example, if your domain is www.mycompany.com, and the application has been named AndroidSample, then the package name might be specified as follows: com.mycompany.androidsample If you do not have a domain name, you may also use ebookfrenzy.com for the purposes of testing, though this will need to be changed before an application can be published: com.ebookfrenzyandroidsample.
The Project location setting will default to a location in the folder named AndroidStudioProjects located in your home directory and may be changed by clicking on the button to the right of the text field containing the current path setting. Click Next to proceed. On the form factors screen, enable the Phone and Tablet option and set the minimum SDK setting to API 8: Android 2.2 (Froyo). The reason for selecting an older SDK release is that this ensures that the finished application will be able to run on the widest possible range of Android devices.
The higher the minimum SDK selection, the more the application will be restricted to newer Android devices. A useful chart (Figure 3- 3) can be viewed by clicking on the Help me choose link. This outlines the various SDK versions and API levels available for use and the percentage of Android devices in the marketplace on which the application will run if that SDK is used as the minimum level.
In general it should only be necessary to select a more recent SDK when that release contains a specific feature that is required for your application. To help in the decision process, selecting an API level from the chart will display the features that are supported at that level.