[SwitchListTile and CheckboxListTile] Adds selectedTileColor property (#68358)

packages/flutter/lib/src/material/checkbox_list_tile.dart

@@ -274,6 +274,7 @@ class CheckboxListTile extends StatelessWidget {
     this.contentPadding,
     this.tristate = false,
     this.shape,
+    this.selectedTileColor,
   }) : assert(tristate != null),
        assert(tristate || value != null),
        assert(isThreeLine != null),
@@ -388,6 +389,9 @@ class CheckboxListTile extends StatelessWidget {
   /// {@macro flutter.material.ListTile.shape}
   final ShapeBorder? shape;
 
+  /// If non-null, defines the background color when [CheckboxListTile.selected] is true.
+  final Color? selectedTileColor;
+
   void _handleValueChange() {
     assert(onChanged != null);
     switch (value) {
@@ -442,6 +446,7 @@ class CheckboxListTile extends StatelessWidget {
           autofocus: autofocus,
           contentPadding: contentPadding,
           shape: shape,
+          selectedTileColor: selectedTileColor,
           tileColor: tileColor,
         ),
       ),

packages/flutter/lib/src/material/switch_list_tile.dart

@@ -275,6 +275,7 @@ class SwitchListTile extends StatelessWidget {
     this.autofocus = false,
     this.controlAffinity = ListTileControlAffinity.platform,
     this.shape,
+    this.selectedTileColor,
   }) : _switchListTileType = _SwitchListTileType.material,
        assert(value != null),
        assert(isThreeLine != null),
@@ -312,6 +313,7 @@ class SwitchListTile extends StatelessWidget {
     this.autofocus = false,
     this.controlAffinity = ListTileControlAffinity.platform,
     this.shape,
+    this.selectedTileColor,
   }) : _switchListTileType = _SwitchListTileType.adaptive,
        assert(value != null),
        assert(isThreeLine != null),
@@ -445,6 +447,9 @@ class SwitchListTile extends StatelessWidget {
   /// {@macro flutter.material.ListTile.shape}
   final ShapeBorder? shape;
 
+  /// If non-null, defines the background color when [SwitchListTile.selected] is true.
+  final Color? selectedTileColor;
+
   @override
   Widget build(BuildContext context) {
     final Widget control;
@@ -506,6 +511,7 @@ class SwitchListTile extends StatelessWidget {
           enabled: onChanged != null,
           onTap: onChanged != null ? () { onChanged!(!value); } : null,
           selected: selected,
+          selectedTileColor: selectedTileColor,
           autofocus: autofocus,
           shape: shape,
           tileColor: tileColor,

packages/flutter/test/material/checkbox_list_tile_test.dart

@@ -259,4 +259,25 @@ void main() {
     final ColoredBox coloredBox = tester.firstWidget(find.byType(ColoredBox));
     expect(coloredBox.color, equals(tileColor));
   });
+
+  testWidgets('CheckboxListTile respects selectedTileColor', (WidgetTester tester) async {
+    const Color selectedTileColor = Colors.black;
+
+    await tester.pumpWidget(
+      wrap(
+        child: const Center(
+          child: CheckboxListTile(
+            value: false,
+            onChanged: null,
+            title: Text('Title'),
+            selected: true,
+            selectedTileColor: selectedTileColor,
+          ),
+        ),
+      ),
+    );
+
+    final ColoredBox coloredBox = tester.firstWidget(find.byType(ColoredBox));
+    expect(coloredBox.color, equals(selectedTileColor));
+  });
 }

packages/flutter/test/material/switch_list_tile_test.dart

@@ -377,4 +377,26 @@ void main() {
     final ColoredBox coloredBox = tester.firstWidget(find.byType(ColoredBox));
     expect(coloredBox.color, tileColor);
   });
+
+  testWidgets('SwitchListTile respects selectedTileColor', (WidgetTester tester) async {
+    const Color selectedTileColor = Colors.black;
+
+    await tester.pumpWidget(
+      wrap(
+        child: const Center(
+          child: SwitchListTile(
+            value: false,
+            onChanged: null,
+            title: Text('Title'),
+            selected: true,
+            selectedTileColor: selectedTileColor,
+          ),
+        ),
+      ),
+    );
+
+    final ColoredBox coloredBox = tester.firstWidget(find.byType(ColoredBox));
+    expect(coloredBox.color, equals(selectedTileColor));
+  });
+
 }