Great work! After a long configuration process, you're now ready to start developing for Android within Unity. To start, you should change the Target Development platform within the Unity editor. To do this, select File | Build Settings... to access the Build Settings... dialog:
Accessing the Build Settings
From the Build Settings... dialog, select the Android platform from the platform list, and then choose the Switch Platform button. On selecting this, Unity rebuilds, reimports, and reconfigures all assets for the Target Platform:
Switch platforms
You can confirm the selected platform from the application ...
