Removed ListTile accentColor dependency (#77004)

dev/benchmarks/test_apps/stocks/lib/main.dart

@@ -64,7 +64,7 @@ class StocksAppState extends State<StocksApp> {
       case StockMode.pessimistic:
         return ThemeData(
           brightness: Brightness.dark,
-          accentColor: Colors.redAccent,
+          primarySwatch: Colors.purple,
         );
     }
     assert(_configuration.stockMode != null);

dev/benchmarks/test_apps/stocks/test/icon_color_test.dart

@@ -83,7 +83,7 @@ void main() {
     await tester.pump(const Duration(seconds: 5)); // end the transition
 
     // check the color of the icon - dark mode
-    checkIconColor(tester, 'Stock List', Colors.redAccent); // theme accent color
+    checkIconColor(tester, 'Stock List', Colors.purple); // theme primary color
     checkIconColor(tester, 'Account Balance', Colors.white38); // disabled
     checkIconColor(tester, 'About', Colors.white); // enabled
   });

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

@@ -788,11 +788,6 @@ class ListTile extends StatelessWidget {
   ///
   /// When [enabled] is false, the text color is set to [ThemeData.disabledColor].
   ///
-  /// When [selected] is true, the text color is set to [ListTileTheme.selectedColor]
-  /// if it's not null. If [ListTileTheme.selectedColor] is null, the text color
-  /// is set to [ThemeData.primaryColor] when [ThemeData.brightness] is
-  /// [Brightness.light] and to [ThemeData.accentColor] when it is [Brightness.dark].
-  ///
   /// When [selected] is false, the text color is set to [ListTileTheme.textColor]
   /// if it's not null and to [TextTheme.caption]'s color if [ListTileTheme.textColor]
   /// is null.
@@ -1019,9 +1014,11 @@ class ListTile extends StatelessWidget {
 
     switch (theme.brightness) {
       case Brightness.light:
-        return selected ? theme.primaryColor : Colors.black45;
+        // For the sake of backwards compatibility, the default for unselected
+        // tiles is Colors.black45 rather than colorScheme.onSurface.withAlpha(0x73).
+        return selected ? theme.colorScheme.primary : Colors.black45;
       case Brightness.dark:
-        return selected ? theme.accentColor : null; // null - use current icon theme color
+        return selected ? theme.colorScheme.primary : null; // null - use current icon theme color
     }
   }
 
@@ -1035,14 +1032,9 @@ class ListTile extends StatelessWidget {
     if (!selected && tileTheme?.textColor != null)
       return tileTheme!.textColor;
 
-    if (selected) {
-      switch (theme.brightness) {
-        case Brightness.light:
-          return theme.primaryColor;
-        case Brightness.dark:
-          return theme.accentColor;
-      }
-    }
+    if (selected)
+      return theme.colorScheme.primary;
+
     return defaultColor;
   }
 

packages/flutter/test/material/list_tile_test.dart

@@ -2284,4 +2284,53 @@ void main() {
     expect(textColor(leadingKey), theme.disabledColor);
     expect(textColor(trailingKey), theme.disabledColor);
   });
+
+  testWidgets('selected, enabled ListTile default icon color, light and dark themes', (WidgetTester tester) async {
+    // Regression test for https://github.com/flutter/flutter/pull/77004
+
+    const ColorScheme lightColorScheme = ColorScheme.light();
+    const ColorScheme darkColorScheme = ColorScheme.dark();
+    final Key leadingKey = UniqueKey();
+    final Key trailingKey = UniqueKey();
+
+    Widget buildFrame({ required Brightness brightness, required bool selected }) {
+      final ThemeData theme = brightness == Brightness.light
+        ? ThemeData.from(colorScheme: const ColorScheme.light())
+        : ThemeData.from(colorScheme: const ColorScheme.dark());
+      return MaterialApp(
+        theme: theme,
+        home: Material(
+          child: Center(
+            child: ListTile(
+              enabled: true,
+              selected: selected,
+              leading: TestIcon(key: leadingKey),
+              trailing: TestIcon(key: trailingKey),
+            ),
+          ),
+        ),
+      );
+    }
+
+    Color iconColor(Key key) => tester.state<TestIconState>(find.byKey(key)).iconTheme.color!;
+
+    await tester.pumpWidget(buildFrame(brightness: Brightness.light, selected: true));
+    expect(iconColor(leadingKey), lightColorScheme.primary);
+    expect(iconColor(trailingKey), lightColorScheme.primary);
+
+    await tester.pumpWidget(buildFrame(brightness: Brightness.light, selected: false));
+    expect(iconColor(leadingKey), Colors.black45);
+    expect(iconColor(trailingKey), Colors.black45);
+
+    await tester.pumpWidget(buildFrame(brightness: Brightness.dark, selected: true));
+    await tester.pumpAndSettle(); // Animated theme change
+    expect(iconColor(leadingKey), darkColorScheme.primary);
+    expect(iconColor(trailingKey), darkColorScheme.primary);
+
+    // For this configuration, ListTile defers to the default IconTheme.
+    // The default dark theme's IconTheme has color:white
+    await tester.pumpWidget(buildFrame(brightness: Brightness.dark, selected: false));
+    expect(iconColor(leadingKey),  Colors.white);
+    expect(iconColor(trailingKey), Colors.white);
+  });
 }