how to build a carplay app?

To build a CarPlay app, you can follow the guidance provided in the sessions from WWDC 2024. Here are the key steps and concepts:

1. Understand the Architecture:

   • The next generation of CarPlay builds on the existing architecture, adding new capabilities such as in-vehicle rendering, composition, and support for vehicle state. This is essential for creating a smooth and integrated experience (Meet the next generation of CarPlay architecture).

2. Use Automaker Apps:

   • Automaker apps run on iPhone, allowing you to leverage the full power of iOS to create rich and custom UI. You can update the experience over time and define everything from settings to custom alerts (Meet the next generation of CarPlay architecture).

3. Customize the UI:

   • The next generation of CarPlay is highly flexible and adapts to the feature set of your car. You can add or remove UI elements to match the availability within the car using the vehicle state protocol (Meet the next generation of CarPlay architecture).

4. Implement Vehicle State Protocol:

   • The vehicle state protocol is used to configure the UI based on the state of the vehicle. This ensures that the UI reflects up-to-date state information (Meet the next generation of CarPlay architecture).

5. Create Custom Settings:

   • You can define custom settings using the automaker settings API. This allows you to create a fully customizable settings menu that can be accessed under the vehicle Settings app (Meet the next generation of CarPlay architecture).

6. Design System and Layout:

   • The design system allows for a deeply customized, integrated experience. You can create a flexible layout system that adapts to your hardware configuration and design preferences (Say hello to the next generation of CarPlay design system).

For more detailed technical guidance, you can refer to the sessions mentioned above and consider enrolling in the Apple MFI program for access to technical documentation.

Relevant Sessions:

1. Meet the next generation of CarPlay architecture
2. Say hello to the next generation of CarPlay design system