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IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

ChildEvent.Changed

data class ChildEvent.Changed : ChildEvent

kotlin.Any
↳	com.google.firebase.database.ChildEvent
	↳	com.google.firebase.database.ChildEvent.Changed

Emitted when the data at a child location has changed.

Summary

Public constructors
`Changed(snapshot: DataSnapshot, previousChildName: String?)`

Public properties
`String?`	`previousChildName` The key name of sibling location ordered before the child.
`DataSnapshot`	`snapshot` An immutable snapshot of the data at the new data at the child location

Public constructors

Changed

Changed(snapshot: DataSnapshot, previousChildName: String?)

Parameters
`snapshot: DataSnapshot`	An immutable snapshot of the data at the new data at the child location
`previousChildName: String?`	The key name of sibling location ordered before the child. This will be null for the first child node of a location.

Public properties

previousChildName

val previousChildName: String?

The key name of sibling location ordered before the child. This will

    be null for the first child node of a location.

snapshot

val snapshot: DataSnapshot

An immutable snapshot of the data at the new data at the child location

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Last updated 2025-07-21 UTC.