Fixed analysis error. (#10035)

This commit is contained in:
P.Y. Laligand 2017-05-12 10:03:18 -07:00 committed by Andrew Wilson
parent 5bce52d6be
commit af4905ffbb

View File

@ -112,7 +112,7 @@ class _ExpansionTileState extends State<ExpansionTile> with SingleTickerProvider
if (_isExpanded)
_controller.forward();
else
_controller.reverse().then((Null value) {
_controller.reverse().then<Null>((Null value) {
setState(() {
// Rebuild without widget.children.
});