ArkUI_VisibleAreaEventOptions

typedef struct ArkUI_VisibleAreaEventOptions ArkUI_VisibleAreaEventOptions

Overview

Defines the parameters for visible area change events.

Before using this struct type, you need to call OH_ArkUI_VisibleAreaEventOptions_Create to create an ArkUI_VisibleAreaEventOptions object. Then, you can configure listening behavior using the following APIs:

Use OH_ArkUI_VisibleAreaEventOptions_SetRatios to set a threshold array, which defines the threshold conditions for triggering visible area changes.

Use OH_ArkUI_VisibleAreaEventOptions_SetExpectedUpdateInterval to set an expected update interval.

Use OH_ArkUI_VisibleAreaEventOptions_SetMeasureFromViewport to set a calculation mode of a visible area.

To obtain the parameter values that have been set, you can:

Use OH_ArkUI_VisibleAreaEventOptions_GetRatios to obtain the threshold array.

Use OH_ArkUI_VisibleAreaEventOptions_GetExpectedUpdateInterval to obtain the expected update interval.

Use OH_ArkUI_VisibleAreaEventOptions_GetMeasureFromViewport to obtain the calculation mode of the visible area.

After using the APIs, call OH_ArkUI_VisibleAreaEventOptions_Dispose to dispose of the resources.

Since: 17

Related module: ArkUI_NativeModule

Header file: native_type.h

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