Starting March 27, 2025, we recommend using android-latest-release instead of aosp-main to build and contribute to AOSP. For more information, see Changes to AOSP.
Develop apps without the Car UI library
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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:
- 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:
- 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.
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Last updated 2025-06-12 UTC.
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