import 'package:flutter/material.dart'; import 'package:fluttertoast/fluttertoast.dart'; Widget formLabelText({required String labelText, bool isRequired = false}) { return Text.rich( TextSpan( children: [ if (isRequired) const TextSpan(text: '* ', style: TextStyle(color: Colors.red)), TextSpan(text: labelText), ], ), ); } InputDecoration formInputDecoration({ required String hintText, // 使用命名参数并标记为必填 IconData? prefixIcon, }) { return InputDecoration( hintText: hintText, hintStyle: TextStyle(color: Colors.grey), filled: true, fillColor: Colors.white, border: OutlineInputBorder(), prefixIcon: prefixIcon != null ? Icon(prefixIcon) : null, ); } Widget buildCard({required BuildContext context, required Widget child}) { final colors = Theme.of(context).colorScheme; return Card( elevation: 0, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)), child: Container( width: double.infinity, decoration: BoxDecoration( color: colors.surface, borderRadius: BorderRadius.circular(12), border: Border.all(color: colors.outline.withAlpha(50), width: 1), ), child: Padding(padding: EdgeInsets.all(8), child: child), ), ); } Widget buildEmptyData() { return Center( child: Text('暂无数据', style: TextStyle(fontSize: 16, color: Colors.grey)), ); } /// 圆形图标按钮 Widget circleIconButton({ required IconData icon, required VoidCallback onPressed, required BuildContext context, }) { return ElevatedButton( onPressed: onPressed, style: ElevatedButton.styleFrom( fixedSize: Size(26, 26), shape: CircleBorder(), elevation: 0, backgroundColor: Theme.of(context).colorScheme.primary, padding: EdgeInsets.zero, minimumSize: const Size(0, 0), ), child: Icon(icon, color: Colors.white), ); } /// 确认按钮样式 ButtonStyle primaryButtonStyle() { return ButtonStyle( backgroundColor: WidgetStateProperty.all(Colors.green), shape: WidgetStateProperty.all( RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)), ), ); } /// 取消按钮样式 ButtonStyle cancelButtonStyle() { return ButtonStyle( backgroundColor: WidgetStateProperty.all(Colors.grey), shape: WidgetStateProperty.all( RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)), ), ); } Text buttonText({required String text}) { return Text(text, style: TextStyle(color: Colors.white)); } /// 图片错误显示 Widget errorImageContainer(double height) { return Container( height: 200, width: double.infinity, color: Colors.grey[200], child: const Icon(Icons.image, color: Colors.grey, size: 30), ); } /// 成功消息 void showSuccessToast(String message) { Fluttertoast.showToast( msg: message, toastLength: Toast.LENGTH_SHORT, gravity: ToastGravity.CENTER, timeInSecForIosWeb: 1, backgroundColor: Colors.green, textColor: Colors.white, fontSize: 16.0, ); } /// 错误消息 void showErrorToast(String message) { Fluttertoast.showToast( msg: message, toastLength: Toast.LENGTH_SHORT, gravity: ToastGravity.CENTER, timeInSecForIosWeb: 1, backgroundColor: Colors.red, textColor: Colors.white, fontSize: 16.0, ); }