update _cells

[sante85]

Widget build(BuildContext context) {
_updateCellsAndChildren();
return AspectRatio(...............

[sante85]

@ech89899, please watch this.

best regards

[sante85]

SpannableGrid(columns: 10, rows: 10, cells: _getCells())
............
List _getCells() {
return result;
}

............

setState(() {
result.add(SpannableGridCellData(
column: 1,
row: 1,
columnSpan: 1,
rowSpan: 1,
id: "asd",
child: Text("asd")
));
});

[sante85]

add _updateCellsAndChildren();