add ? (#88019)

10aad08a · Abhishek Ghaskata · GitHub · 79ff8a5c · 10aad08a
Unverified Commit 10aad08a authored Aug 14, 2021 by Abhishek Ghaskata Committed by GitHub Aug 14, 2021
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checkbox.dart packages/flutter/lib/src/material/checkbox.dart +2 -2

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--- a/packages/flutter/lib/src/material/checkbox.dart
+++ b/packages/flutter/lib/src/material/checkbox.dart
@@ -138,9 +138,9 @@ class Checkbox extends StatefulWidget {
  /// ```dart
  /// Checkbox(
  ///   value: _throwShotAway,
-  ///   onChanged: (bool newValue) {
+  ///   onChanged: (bool? newValue) {
  ///     setState(() {
-  ///       _throwShotAway = newValue;
+  ///       _throwShotAway = newValue!;
  ///     });
  ///   },
  /// )