The Android Auto UI consists of a nav bar for accessing key actions, a main app content area, and a status bar that displays system information.
The status bar displays time, weather, and system status details. Below it, the app content area shows either the app launcher or content from the main app currently in use.
The nav bar provides access to the following:
- The app launcher
- A widget with controls for a second, ongoing app
- The Notification Center
- The Assistant, for voice-based interactions
![system UI overview](https://developers.google.cn/cars/design/android-auto/product-experience/system-ui/images/Sys-UI-Anatomy.png?authuser=9)
2. App content area
3. Nav bar