165 lines
4.9 KiB
Dart
165 lines
4.9 KiB
Dart
import 'package:flutter/material.dart';
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import '../models/message.dart';
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import '../services/ai_service.dart';
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class AIChatScreen extends StatefulWidget {
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@override
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State<AIChatScreen> createState() => _AIChatScreenState();
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}
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class _AIChatScreenState extends State<AIChatScreen> {
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final List<Message> _messages = [
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Message(
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text: '您好！我是伴享智能助手，有什么可以帮您的吗？',
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isUser: false,
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),
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];
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final _textController = TextEditingController();
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final _scrollController = ScrollController();
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void _sendMessage() {
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if (_textController.text.trim().isEmpty) return;
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final newMessages = AIService.mockChat(_textController.text);
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setState(() {
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_messages.addAll(newMessages);
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});
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_textController.clear();
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// 滚动到底部
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Future.delayed(Duration(milliseconds: 100), () {
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_scrollController.animateTo(
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_scrollController.position.maxScrollExtent,
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duration: Duration(milliseconds: 300),
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curve: Curves.easeOut,
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);
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text('AI智能助手'),
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),
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body: Column(
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children: [
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// 快捷指令
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Container(
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height: 60,
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padding: EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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child: ListView(
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scrollDirection: Axis.horizontal,
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children: [
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_buildQuickButton('附近活动'),
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_buildQuickButton('我要挂号'),
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_buildQuickButton('帮我买菜'),
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],
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),
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),
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Divider(height: 1),
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// 消息列表
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Expanded(
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child: ListView.builder(
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controller: _scrollController,
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padding: EdgeInsets.all(16),
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itemCount: _messages.length,
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itemBuilder: (context, index) {
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final message = _messages[index];
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return _buildMessageBubble(message);
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},
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),
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),
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// 输入框
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Container(
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padding: EdgeInsets.all(8),
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decoration: BoxDecoration(
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color: Colors.white,
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boxShadow: [
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BoxShadow(
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color: Colors.black12,
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blurRadius: 4,
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offset: Offset(0, -2),
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),
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],
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),
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child: Row(
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children: [
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// 语音按钮
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IconButton(
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icon: Icon(Icons.mic, color: Color(0xFF333333)),
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onPressed: () {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('语音功能开发中')),
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);
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},
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),
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// 文字输入
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Expanded(
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child: TextField(
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controller: _textController,
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decoration: InputDecoration(
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hintText: '输入您的问题...',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(24),
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),
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contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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),
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onSubmitted: (_) => _sendMessage(),
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),
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),
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SizedBox(width: 8),
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// 发送按钮
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IconButton(
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icon: Icon(Icons.send, color: Color(0xFF333333)),
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onPressed: _sendMessage,
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),
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],
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),
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),
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],
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),
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);
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}
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Widget _buildQuickButton(String text) {
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return Padding(
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padding: EdgeInsets.only(right: 8),
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child: OutlinedButton(
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onPressed: () {
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_textController.text = text;
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_sendMessage();
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},
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style: OutlinedButton.styleFrom(
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side: BorderSide(color: Color(0xFF333333)),
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),
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child: Text(text, style: TextStyle(color: Color(0xFF333333))),
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),
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);
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}
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Widget _buildMessageBubble(Message message) {
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return Align(
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alignment: message.isUser ? Alignment.centerRight : Alignment.centerLeft,
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child: Container(
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margin: EdgeInsets.only(bottom: 12),
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padding: EdgeInsets.symmetric(horizontal: 16, vertical: 12),
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constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.7),
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decoration: BoxDecoration(
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color: message.isUser ? Color(0xFF333333) : Color(0xFFF0F0F0),
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borderRadius: BorderRadius.circular(16),
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),
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child: Text(
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message.text,
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style: TextStyle(
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color: message.isUser ? Colors.white : Color(0xFF333333),
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fontSize: 16,
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),
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),
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),
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);
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}
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}
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