How to Create a New Android Project ?

After you've created an AVD you can move to the next step and start a new Android project in Eclipse.

1. In Eclipse, select File > New > Project....
   If the ADT Plugin for Eclipse has been successfully installed, the resulting dialog should have a folder labeled "Android" which should contain "Android Project". (After you create one or more Android projects, an entry for "Android XML File" will also be available.)
2. Select "Android Project" and click Next.
   
3. Fill in the project details with the following values:
   • Project name: HelloAndroid
   • Build Target: Select a platform version that is equal to or lower than the target you chose for your AVD.
   • Application name: Hello, Android
   • Package name: com.example.helloandroid (or your own private namespace)
   • Create Activity: HelloAndroid
   Click Finish.
   
   Here is a description of each field:

   Project Name

   This is the Eclipse project name — the name of the directory that contains the project files.

   Build Target

   This is the version of the Android SDK that you're using to build your application. For example, if you choose Android 2.1, your application will be compiled against the Android 2.1 platform library. The target you choose here does not have to match the target you chose for your AVD; however, the target must be equal to or lower than the target you chose for your AVD. Android applications are forward-compatible, which means an application will run on the platform against which it is built as well as all platforms that are released in the future. For example, an application that is built against the 2.1 platform library will run normally on an AVD or device that is running the 2.3.3. The reverse is not true.

   Application Name

   This is the human-readable title for your application — the name that appears on the Android device.

   Package Name

   This is the package namespace (following the same rules as for packages in the Java programming language) that you want all your source code to reside under. This also sets the package name under which the stub Activity is generated.

   Your package name must be unique across all packages installed on the Android system; for this reason, it's important to use a standard domain-style package for your applications. The example above uses the "com.example" namespace, which is a namespace reserved for example documentation — when you develop your own applications, you should use a namespace that's appropriate to your organization or entity.

   Create Activity

   This is the name for the class stub that is generated by the plugin. This is a subclass of Android's Activity class. An Activity is simply a class that can run and do work. It can create a UI if it chooses, but it doesn't need to. As the checkbox suggests, this is optional, but an Activity is almost always used as the basis for an application.

   Min SDK Version

   This value specifies the minimum API Level on which your application will run. The Min SDK Version should be the same as the Build Target you chose. For example, if the Build Target is Android 2.1, then the Min SDK Version should be 7 or lower (it can never be higher than 7). For more information, see Android API Levels.

   Other fields: The checkbox for "Use default location" allows you to change the location on disk where the project's files are generated and stored.

Your Android project is now ready.