didFinishLayout method

  1. @override
void didFinishLayout ()
override

Called at the end of layout to indicate that layout is now complete.

Implementation 

@override
void didFinishLayout() {
  assert(debugAssertChildListLocked());
  final int firstIndex = _childElements.firstKey() ?? 0;
  final int lastIndex = _childElements.lastKey() ?? 0;
  widget.delegate.didFinishLayout(firstIndex, lastIndex);
}