The approach to developing on the Android platform is both systematic and thorough. I start by downloading the AOSP project and customizing it to meet our specific needs. For example, in the Scania project, we tailored the car library to fit our requirements. We work across various layers, from the application layer to the framework layer, ensuring that the framework libraries enable smooth communication between these layers. Furthermore, we adjust the AOSP to reflect our preferences by customizing logos, launchers, themes, and settings. Throughout this process, we consistently ensure compatibility with AOSP or AAOS specifications.