fix null check

2021-11-10 11:37:25 +00:00 · 2021-11-10 11:37:25 +00:00 · f20cb1fef0
parent 41de1ba314
commit f20cb1fef0
1 changed files with 10 additions and 1 deletions
--- a/flutter/lib/pages/drawing_page.dart
+++ b/flutter/lib/pages/drawing_page.dart
@ -101,7 +101,15 @@ class _DrawingPageState extends State<DrawingPage> {
          ),
          actions: [
            IconButton(
-              onPressed: () => graphData.flushData(),
+              onPressed: () {
+                setState(() {
+                  startDot = null;
+                  endDot = null;
+                  bfsPath = null;
+                  dfsAccessTable = null;
+                  graphData.flushData();
+                });
+              },
              icon: const Icon(Icons.delete_sweep),
              iconSize: 60,
            ),
@ -126,6 +134,7 @@ class _DrawingPageState extends State<DrawingPage> {
                  dfsAccessTable = null;
                  startDot = null;
                  endDot = null;
+                  clearInputData();
                });
              }),
              createButton(graphData.getUseLengthStr(), changeLength),