setupParentData method

void setupParentData(
  1. covariant RenderObject child

Override to setup parent data correctly for your children.

You can call this function to set up the parent data for child before the child is added to the parent's child list.


void setupParentData(covariant RenderObject child) {
  if (child.parentData is! ParentData) {
    child.parentData = ParentData();