1、appbar增加foregroundColor；2、修改sdk最小版本为2.12.0

lib/widget/my_app_bar.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 class MyPageAppBar extends StatelessWidget implements PreferredSizeWidget {
   final String? title;
   final Color? backgroundColor;
+  final Color? foregroundColor;
   final bool showBack;
   final bool primary;
   final Function()? onBack;
@@ -15,6 +16,7 @@ class MyPageAppBar extends StatelessWidget implements PreferredSizeWidget {
     Key? key,
     this.title,
     this.backgroundColor,
+    this.foregroundColor,
     this.showBack = true,
     this.primary = true,
     this.onBack,
@@ -29,8 +31,9 @@ class MyPageAppBar extends StatelessWidget implements PreferredSizeWidget {
     return AppBar(
       key: key,
       centerTitle: true,
-      title: Text(title ?? ""),
+      title: Text(title ?? "", style: TextStyle(color: foregroundColor)),
       backgroundColor: backgroundColor,
+      foregroundColor: foregroundColor,
       primary: primary,
       actions: actions,
       leading: leading,

pubspec.yaml

@@ -4,7 +4,7 @@ version: 1.0.2
 homepage: http://t.clxkj.cn/clx-android/flutter_clx_base.git 
 
 environment:
-  sdk: ">=2.17.6 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
   flutter: ">=2.5.0"
 
 dependencies: