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Added in API level 1

Summary: Methods

ExpandableListView.OnGroupExpandListener

Kotlin |Java

public static interface ExpandableListView.OnGroupExpandListener

android.widget.ExpandableListView.OnGroupExpandListener

Known indirect subclasses

ExpandableListActivity

ExpandableListActivity This class was deprecated in API level 30. Use RecyclerView or use ExpandableListView directly

Used for being notified when a group is expanded

Summary

Public methods
`abstract void`	`onGroupExpand(int groupPosition)` Callback method to be invoked when a group in this expandable list has been expanded.

Public methods

onGroupExpand

Added in API level 1

public abstract void onGroupExpand (int groupPosition)

Callback method to be invoked when a group in this expandable list has been expanded.

Parameters
`groupPosition`	`int`: The group position that was expanded

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Last updated 2026-08-03 UTC.

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