semanticChildCount property
The number of children that will contribute semantic information.
Some subtypes of ScrollView can infer this value automatically. For
example ListView will use the number of widgets in the child list,
while the ListView.separated constructor will use half that amount.
For CustomScrollView and other types which do not receive a builder
or list of widgets, the child count must be explicitly provided. If the
number is unknown or unbounded this should be left unset or set to null.
See also:
- SemanticsConfiguration.scrollChildCount, the corresponding semantics property.
Implementation
final int? semanticChildCount;