The Android for Cars App Library helps you build apps that work with both:
[Android Auto](https://developer.android.com/training/cars/platforms/android-auto) and [Android Automotive OS](https://developer.android.com/training/cars/platforms/automotive-os)

The Android for Cars App Library:

- **Provides vehicle-optimized** templates and components that you can assemble into task flows to design your app's user interface.
- **Handles important functions** such as responsive screen sizing so your app can work effectively in all compatible vehicles.
- **Is available for multiple app categories** : [See the full list here](https://developer.android.com/training/cars#supported-app-categories).

This section describes all available templates and the components included on
each. To see a list of requirements your apps should
meet, see [Templated app requirements](https://developer.android.com/design/ui/cars/guides/ux-requirements/overview#templates).
| **Note:** While the design process for templates is the same for both Android Auto and Android Automotive OS (AAOS), the development process involves producing two different APKs. For technical guidance on building an app with templates, see [Using the Android for Cars App Library](https://developer.android.com/training/cars/apps).

The Android for Cars App Library includes:

General purpose templates (usable by all apps types built using the Car App
Library)

| Template | What it shows |
|---|---|
| List, Grid | Information items in a list or grid layout |
| Sectioned Item | Mix and match browsing structure using lists and grids |
| Pane | Detailed information and prominent actions, with optional image |
| Message, Long Message | Brief or longer full-screen message and relevant actions |
| Search | Search bar and results list |
| Sign-in | Options for signing in to the app |
| Tab | Tabs at top to switch among views of other embedded templates |

Special purpose templates

| Template | What it shows | App categories |
|---|---|---|
| [Navigation](https://developer.android.com/design/ui/cars/guides/templates/navigation-template) | Full-screen map with action strip and optional routing card | Navigation |
| [Place List (map)](https://developer.android.com/design/ui/cars/guides/templates/place-list-map-template) | List of locations or other items next to a map drawn by app library | POI |
| [Map + Content](https://developer.android.com/design/ui/cars/guides/templates/map-content-template) | Map with view of other included template | Navigation, POI, Weather |
| [Media Playback](https://developer.android.com/design/ui/cars/guides/templates/media-playback-template) | View of currently playing media | Media |