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

public final data class ChildEvent.Changed extends ChildEvent

java.lang.Object
↳	com.google.firebase.database.ktx.ChildEvent
	↳	com.google.firebase.database.ktx.ChildEvent.Changed

Emitted when the data at a child location has changed.

Important: In July 2025, we stopped releasing KTX modules and removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the 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.

Summary

Public fields
`final String`	`previousChildName` The key name of sibling location ordered before the child.
`final @NonNull DataSnapshot`	`snapshot` An immutable snapshot of the data at the new data at the child location

Public constructors
`Changed(@NonNull DataSnapshot snapshot, String previousChildName)`

Public fields

previousChildName

public final String previousChildName

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

    be null for the first child node of a location.

snapshot

public final @NonNull DataSnapshot snapshot

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

Public constructors

Changed

public Changed(@NonNull DataSnapshot snapshot, String previousChildName)

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