# MessagingServiceConstants

Artifact: [androidx.car.app:app](https://developer.android.com/jetpack/androidx/releases/car-app) [View Source](https://cs.android.com/search?q=file:androidx/car/app/messaging/MessagingServiceConstants.java+class:androidx.car.app.messaging.MessagingServiceConstants) Added in [1.3.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.3.0)

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```
@RequiresCarApi(value = 8)
class MessagingServiceConstants
```

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Constants related to messaging in Android Auto

## Summary

| ### Constants |
|---|---|
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html!` | `https://developer.android.com/reference/kotlin/androidx/car/app/messaging/MessagingServiceConstants#ACTION_HANDLE_CAR_MESSAGING() = "androidx.car.app.messaging.action.HANDLE_CAR_MESSAGING"` Used to declare Android Auto messaging support within an app's manifest |

## Constants

### ACTION_HANDLE_CAR_MESSAGING

Added in [1.3.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.3.0)

```
const val ACTION_HANDLE_CAR_MESSAGING = "androidx.car.app.messaging.action.HANDLE_CAR_MESSAGING": String!
```

Used to declare Android Auto messaging support within an app's manifest

Specifically, this bit should be added to an `https://developer.android.com/reference/android/app/IntentService.html` as the `IntentFilter`'s action. When declared, apps will show up in Android Auto's app launcher with the "default" / "built-in" in-car messaging experience.