fix 3.27

README.md

@@ -22,7 +22,7 @@
 
 > 目前开始逐步补全完善，主要提供一些有用或者有趣的例子，如果你也有好例子，欢迎提交 PR 。
 >
-> **运行须知：配置好Flutter开发环境(目前Flutter SDK 版本 *3.24* 以上版本)。**
+> **运行须知：配置好Flutter开发环境(目前Flutter SDK 版本 *3.27* 以上版本)。**
 >
 > **[如果克隆太慢或者图片看不到，可尝试从码云地址下载](https://gitee.com/CarGuo/GSYFlutterDemo)**
 

lib/main.dart

@@ -285,6 +285,7 @@ class MyHomePageState extends State<MyHomePage> {
         var result = Uri.decodeFull(key);
         if (routers.keys.contains(result) && result != "/") {
           Future(() {
+            // ignore: use_build_context_synchronously
             Navigator.pushNamed(context, result);
           });
         }
@@ -972,3 +973,5 @@ extension CatExtension on Cat {
     }
   }
 }
+
+

lib/widget/arc_seek_bar_demo_page.dart

@@ -164,7 +164,7 @@ class ArcSeekBarPainter extends CustomPainter {
 
   void initShadowPaint() {
     shadowPaint = Paint()
-      ..color = Colors.black.withOpacity(0.3)
+      ..color = Colors.black.withValues(alpha: 0.3)
       ..strokeWidth = arcPaint.strokeWidth + 4
       ..style = PaintingStyle.stroke
       ..strokeCap = StrokeCap.round
@@ -254,7 +254,7 @@ class ArcSeekBarPainter extends CustomPainter {
         ..addOval(Rect.fromCircle(
             center: Offset(thumbX, thumbY), radius: thumbRadius + 3));
       Paint shadowPaint = Paint()
-        ..color = Colors.black.withOpacity(0.3)
+        ..color = Colors.black.withValues(alpha: 0.3)
         ..maskFilter = MaskFilter.blur(BlurStyle.normal, thumbShadowRadius);
       canvas.drawPath(oval, shadowPaint);
     }

lib/widget/book_page/book_painter.dart

@@ -165,9 +165,7 @@ class BookPainter extends CustomPainter {
         f.y = viewHeight;
         _calcPointsXY(a, f);
         break;
-      default:
-        break;
-    }
+      }
   }
 
   _initPaintAndPath() {

lib/widget/custom_viewport/secondary_tab_bar.dart

@@ -16,7 +16,7 @@ class SecondaryTabBar extends StatelessWidget {
   Widget _buildChild() {
     return Container(
       height: 66,
-      color: Colors.red.withOpacity(0.8),
+      color: Colors.red.withValues(alpha: 0.8),
       child: const Center(child: Text('二级tab')),
     );
   }

lib/widget/demo_navigator_new.dart

@@ -104,24 +104,22 @@ class BookRouterDelegate extends RouterDelegate<BookRoutePath>
             books: books,
             onTapped: _handleBookTapped,
           ),
+          onPopInvoked: (didPop, result) {
+            if (!didPop) {
+              return;
+            }
+
+            // Update the list of pages by setting _selectedBook to null
+            _selectedBook = null;
+            show404 = false;
+            notifyListeners();
+          },
         ),
         if (show404)
           const MaterialPage(key: ValueKey('UnknownPage'), child: UnknownScreen())
         else if (_selectedBook != null)
           BookDetailsPage(book: _selectedBook)
       ],
-      onPopPage: (route, result) {
-        if (!route.didPop(result)) {
-          return false;
-        }
-
-        // Update the list of pages by setting _selectedBook to null
-        _selectedBook = null;
-        show404 = false;
-        notifyListeners();
-
-        return true;
-      },
     );
   }
 

lib/widget/gesture_password/gesture_password_demo_page.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:gsy_flutter_demo/widget/gesture_password/gesture_password_view.dart';
-import 'package:gsy_flutter_demo/widget/link_sliver/link_flexible_space_bar.dart';
 
 class GesturePasswordDemoPage extends StatefulWidget {
   const GesturePasswordDemoPage({super.key});

lib/widget/gesture_password/src/gesture_view_controller.dart

@@ -16,6 +16,7 @@ class GestureViewController {
   Function()? _updateView;
   Offset? _firstPoint;
   Offset? _movePoint;
+  // ignore: prefer_final_fields
   List<int> _result = [];
 }
 

lib/widget/link_sliver/link_flexible_space_bar.dart

@@ -166,7 +166,7 @@ class _LinkFlexibleSpaceBarState extends State<LinkFlexibleSpaceBar> {
         if (opacity > 0.0) {
           TextStyle titleStyle = theme.primaryTextTheme.titleLarge!;
           titleStyle = titleStyle.copyWith(
-              color: titleStyle.color!.withOpacity(opacity));
+              color: titleStyle.color!..withValues(alpha: opacity));
           final bool effectiveCenterTitle = _getEffectiveCenterTitle(theme)!;
           final EdgeInsetsGeometry padding = widget.titlePadding ??
               EdgeInsetsDirectional.only(

lib/widget/list_link_bottomsheet_demo_page.dart

@@ -1,4 +1,4 @@
-// ignore_for_file: unused_field, unused_element
+// ignore_for_file: unused_field, unused_element, unused_element_parameter
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';

lib/widget/photo_gallery_demo_page.dart

@@ -152,7 +152,7 @@ class _PhotoGalleryState extends State<PhotoGallery> {
     colorList = List.generate(
         _imgCount,
         (index) => Color((Random().nextDouble() * 0xFFFFFF).toInt())
-            .withOpacity(1));
+            .withValues(alpha: 1));
 
     super.initState();
   }
@@ -334,7 +334,7 @@ class _AnimatedCutoutOverlay extends StatelessWidget {
           // 用一个黑色的蒙层，这里的 child 会变成 effects 里 builder 里的 child
           // 也就是黑色 Container 会在 _buildAnimatedCutout 作为 ClipPath 的 child
           child: IgnorePointer(
-              child: Container(color: Colors.black.withOpacity(opacity))),
+              child: Container(color: Colors.black.withValues(alpha: opacity))),
         ),
       ],
     );

lib/widget/scroll_inner_content_demo_page.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: use_build_context_synchronously
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 

lib/widget/scroll_to_index_demo_page.dart

@@ -56,7 +56,7 @@ class _ScrollToIndexDemoPageState extends State<ScrollToIndexDemoPage> {
         key: ValueKey(index),
         controller: controller!,
         index: index,
-        highlightColor: Colors.black.withOpacity(0.1),
+        highlightColor: Colors.black..withValues(alpha: 0.1),
         child: child,
       );
 

lib/widget/sliver_stick_demo_page.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: use_build_context_synchronously
+
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';

lib/widget/stick/stick_demo_page2.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: use_build_context_synchronously
+
 import 'dart:math' as math;
 
 import 'package:flutter/foundation.dart';

lib/widget/verification_code_input_demo_page2.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: unused_element_parameter
+
 import 'dart:async';
 
 import 'package:flutter/material.dart';