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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

sealed class ChildEvent

Known direct subclasses

ChildEvent.Added, ChildEvent.Changed, ChildEvent.Moved, ChildEvent.Removed

`ChildEvent.Added`	Emitted when a new child is added to the location.
`ChildEvent.Changed`	Emitted when the data at a child location has changed.
`ChildEvent.Moved`	Emitted when a child location's priority changes.
`ChildEvent.Removed`	Emitted when a child is removed from the location.

Used to emit events about changes in the child locations of a given Query when using the childEvents Flow.

Summary

Nested types
`data class ChildEvent.Added : ChildEvent` Emitted when a new child is added to the location.
`data class ChildEvent.Changed : ChildEvent` Emitted when the data at a child location has changed.
`data class ChildEvent.Moved : ChildEvent` Emitted when a child location's priority changes.
`data class ChildEvent.Removed : ChildEvent` Emitted when a child is removed from the location.

Protected constructors
`ChildEvent()`

Protected constructors

ChildEvent

protected ChildEvent()

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Last updated 2025-07-21 UTC.

ChildEvent

Summary

Nested types

Protected constructors

Protected constructors

ChildEvent