ViewToken Object Type

ViewToken object is returned as one of the properties in the onViewableItemsChanged callback (for example, in the FlatList component). It is exported by ViewabilityHelper.js.

Example

{
  item: {key: "key-12"},
  key: "key-12",
  index: 11,
  isViewable: true
}

Keys and values

index

Unique numeric identifier assigned to the data element.

isViewable

Specifies if at least some part of list element is visible in the viewport.

item

Item data

key

Key identifier assigned to the data element extracted to the top level.

section

Item section data when used with SectionList.

Used by

• FlatList
• SectionList
• VirtualizedList