RenderGrid({List<RenderBox> children, GridDelegate delegate, int virtualChildBase: 0, int virtualChildCount, Offset paintOffset: Offset.zero, LayoutCallback callback })

Creates a grid render object.

The delegate argument must not be null.

Source 

RenderGrid({
  List<RenderBox> children,
  GridDelegate delegate,
  int virtualChildBase: 0,
  int virtualChildCount,
  Offset paintOffset: Offset.zero,
  LayoutCallback callback
}) : _delegate = delegate, _virtualChildBase = virtualChildBase, super(
  virtualChildCount: virtualChildCount,
  paintOffset: paintOffset,
  callback: callback
) {
  assert(delegate != null);
  addAll(children);
}