[android-components](../../index.md) / [mozilla.components.concept.sync](../index.md) / [DeviceConstellationObserver](index.md) / [onDevicesUpdate](./on-devices-update.md)

# onDevicesUpdate

`abstract fun onDevicesUpdate(constellation: `[`ConstellationState`](../-constellation-state/index.md)`): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/sync/src/main/java/mozilla/components/concept/sync/Devices.kt#L130)