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西宁网站建设的公司哪家好,建设公司的网站,游戏源码网站免费,营销型建设网站本人的学习灵感源自 CSDN 博主 A 懿轩 A#xff08;博客链接#xff1a;https://blog.csdn.net/2301_80035882?typeblog#xff09;。博主围绕【2025 版 OpenHarmony】GitCode 口袋工具系列开发内容#xff0c;兼具实用性与指导性#xff0c;极具参考和学习意义。在此基础…本人的学习灵感源自 CSDN 博主 A 懿轩 A博客链接https://blog.csdn.net/2301_80035882?typeblog。博主围绕【2025 版 OpenHarmony】GitCode 口袋工具系列开发内容兼具实用性与指导性极具参考和学习意义。在此基础上所有内容均为个人实操总结尊重原作者知识产权特此标注。1、首先我们将华为模拟器调为深色模式2、然后新增一个app_theme.dart文件具体路径是lib/core/app_theme.dart文件创建完毕后将下列代码添加到该文件中。import package:flutter/material.dart; /// 统一管理浅色/深色主题方便在 HarmonyOS 上适配系统夜间模式。 class AppTheme { AppTheme._(); static const Color _seedColor Colors.indigo; static ThemeData light() _theme(Brightness.light); static ThemeData dark() _theme(Brightness.dark); static ThemeData _theme(Brightness brightness) { final colorScheme ColorScheme.fromSeed( seedColor: _seedColor, brightness: brightness, ); final isDark brightness Brightness.dark; return ThemeData( colorScheme: colorScheme, useMaterial3: true, visualDensity: VisualDensity.standard, brightness: brightness, scaffoldBackgroundColor: colorScheme.surface, appBarTheme: AppBarTheme( backgroundColor: colorScheme.surface, foregroundColor: colorScheme.onSurface, centerTitle: true, elevation: 0, ), navigationBarTheme: NavigationBarThemeData( backgroundColor: colorScheme.surfaceContainerHigh, indicatorColor: colorScheme.primary.withValues(alpha: isDark ? 0.35 : 0.2), labelBehavior: NavigationDestinationLabelBehavior.alwaysShow, ), cardTheme: CardTheme( color: colorScheme.surfaceContainerLowest, elevation: 0, shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(20), ), ), inputDecorationTheme: InputDecorationTheme( border: OutlineInputBorder( borderRadius: BorderRadius.circular(16), borderSide: BorderSide(color: colorScheme.outlineVariant), ), enabledBorder: OutlineInputBorder( borderRadius: BorderRadius.circular(16), borderSide: BorderSide(color: colorScheme.outlineVariant), ), focusedBorder: OutlineInputBorder( borderRadius: BorderRadius.circular(16), borderSide: BorderSide(color: colorScheme.primary, width: 1.4), ), filled: true, fillColor: colorScheme.surfaceContainerLowest, labelStyle: TextStyle(color: colorScheme.onSurfaceVariant), hintStyle: TextStyle( color: colorScheme.onSurfaceVariant.withValues(alpha: 0.7), ), prefixIconColor: colorScheme.onSurfaceVariant, ), chipTheme: ChipThemeData( backgroundColor: colorScheme.surfaceContainerHigh, selectedColor: colorScheme.primary.withValues(alpha: 0.2), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(24), ), labelStyle: TextStyle(color: colorScheme.onSurface), ), dividerTheme: DividerThemeData( color: colorScheme.outlineVariant.withValues(alpha: 0.7), thickness: 1, ), ); } }3、然后修改main.dart文件MaterialApp跟随系统模式可同时拥有亮/暗主题并通过ThemeMode.system跟随HarmonyOS/Windows 的系统设置修改代码return MaterialApp( title: GitCode 口袋工具, theme: AppTheme.light(), darkTheme: AppTheme.dark(), themeMode: ThemeMode.system, home: const MainNavigationPage(), );记得添加导入文件否则会报错import package:gitcode_pocket_tool/core/app_theme.dart;4、最后修改search_page.dart文件修改代码return _InfoBanner( icon: Icons.error_outline, background: scheme.errorContainer, textColor: scheme.onErrorContainer, message: _errorMessage!, );5、运行实例