Launch the Corona Simulator and select Simulator.

Navigate to your Hello World application and select your main.lua file.

Once your application is running on the simulator, go to the Corona Simulator menu bar and select File | Build For | Android (Windows)/Shift + Command + B on your keyboard (Mac). The following dialog box appears:

Create a name for your app in the Application name field. We can keep the same name Hello World. In the Version Code field, set the number to 1 if that is not already the default number. This specific field must always be an integer and is not visible to users. In the Version Name field, keep the number at 1.0. This attribute is the string shown to users. In the Package field, you will need to specify a name that uses the traditional Java scheme, which is basically the reverse format of your domain name. For example, com.mycompany.app.helloworld would work as a package name. The Project Path shows the location of where your project folder is. Target OS Compatibility currently supports Android 2.2 and newer devices running the ArmV7 processor. In the Keystore field, you will be signing your build with the Debug Keystore that is already provided in Corona. In the Key Alias field, select androiddebugkey from the pull-down menu if it's not selected. In the Save to folder section, click Browse and choose where you'd like your application to save in.

If all the information has been confirmed in the dialog box, click on the Build button.