Develop apps without the Car UI library

The Car UI Library (car-ui-library) is a self-consistent automotive UI library that can be customized by OEMs. Google strongly recommends you use the car-ui-library to create your app. If this isn't feasible, there are two alternatives:

• From Android 12, you can use car-rotary-lib, a subset of car-ui-library.
• On Android 11, you MUST implement your own FocusParkingView, FocusArea, and DirectManipulationHelper as described below.

Implement FocusParkingView

You either can implement your own FocusParkingView or copy the class from the car-ui-library to your project.

To implement FocusParkingView:

1. Hard code the accessibility class name so that the RotaryService can recognize it:

   @Override
   public CharSequence getAccessibilityClassName() {
         return "com.android.car.ui.FocusParkingView";
   }
   

Implement FocusArea

Like FocusParkingView, you can either implement your own FocusArea or copy the class from the car-ui-library to your project.

To implement FocusArea:

1. Hard code the accessibility class name so that rotary service can recognize it:

   @Override
   public CharSequence getAccessibilityClassName() {
      return "com.android.car.ui.FocusArea";
   }
   

Implement DirectManipulationHelper

This is a utility class. You can copy the class from the car-ui-library to your project.