How can we trigger toast for 8 seconds using car-ui-lib

Arushi Agarwal — Wed, 14 Jan 2026 03:09:56 +0000

Hi, I am working on Android Automotive OS and I wanted to display toast with duration 8 seconds using the document https://developer.android.com/design/ui/cars/guides/components/toast

I have few questions:
1-) Where is the 8 seconds duration limit is defined?
2-) Do we need to only add car-ui-lib into third party apps and trigger the toast using - Toast.makeText() and it will trigger toast from car-ui-lib with duration 8 seconds?
3-)What is CarToast? Do we need to trigger toast using CarToast instead of Toast.makeText()?

Android Automotive: car-ui-lib integrated but toast still doesn't show duration 8 seconds

Arushi Agarwal — Wed, 14 Jan 2026 02:25:41 +0000

Jan 13 '26 Comments: 2 Answers: 0

I am working on Android Automotive (AAOS) and integrated car-ui-lib into SystemUI by following the official documentation:
https://developer.android.com/design/ui/cars/guides/components/toast
https://source.android.com/docs/automotive/hmi/car_ui/integrate
However, when I trigger a toast using Toast.makeText(), it is still rendered as a Platform/SystemUI toast (SystemUIToast). The toast duration is not ~8 seconds, and I do not see a toast…

Open Full Question

DEV Community: Arushi Agarwal

How can we trigger toast for 8 seconds using car-ui-lib

Android Automotive: car-ui-lib integrated but toast still doesn't show duration 8 seconds