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Added in API level 4
Deprecated in API level 29

ZoomButtonsController.OnZoomListener

Kotlin |Java

public static interface ZoomButtonsController.OnZoomListener

android.widget.ZoomButtonsController.OnZoomListener

Interface that will be called when the user performs an interaction that triggers some action, for example zooming.

Summary

Public methods
`abstract void`	`onVisibilityChanged(boolean visible)` Called when the zoom controls' visibility changes.
`abstract void`	`onZoom(boolean zoomIn)` Called when the owner view needs to be zoomed.

Public methods

onVisibilityChanged

Added in API level 4

public abstract void onVisibilityChanged (boolean visible)

Called when the zoom controls' visibility changes.

Parameters
`visible`	`boolean`: Whether the zoom controls are visible.

onZoom

Added in API level 4

public abstract void onZoom (boolean zoomIn)

Called when the owner view needs to be zoomed.

Parameters
`zoomIn`	`boolean`: The direction of the zoom: true to zoom in, false to zoom out.

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Last updated 2026-08-03 UTC.

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