builder property
Widget Function(BuildContext context, GestureDragUpdateCallback onPanUpdate, GestureDragEndCallback onPanEnd)
builder
final
Builds the content; attach onPanUpdate and onPanEnd only where a drag should start, e.g. a header, so the rest can still scroll and tap.
Implementation
final Widget Function(
BuildContext context,
GestureDragUpdateCallback onPanUpdate,
GestureDragEndCallback onPanEnd,
)
builder;