example/lib/main.dart

@@ -40,10 +40,14 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
   bool _isListening = false;
   String _currentText = '';
   String _errorMessage = '';
+  List<String> _recognitionHistory = [];
 
   /// 本次录音开始前的文本内容（用于实时追加）
   String _baseText = '';
 
+  // 录音相关
+  final List<String> _realtimeResults = []; // 存储实时识别片段
+
   @override
   void initState() {
     super.initState();
@@ -148,9 +152,11 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
     );
   }
 
-  /// 清除内容
+  /// 清除历史记录
-  void _clearContent() {
+  void _clearHistory() {
     setState(() {
+      _recognitionHistory.clear();
+      _realtimeResults.clear();
       _currentText = '';
       _baseText = ''; // 也清空基础文本
       _textController.clear();
@@ -167,8 +173,8 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
         actions: [
           IconButton(
             icon: const Icon(Icons.clear_all),
-            onPressed: _clearContent,
+            onPressed: _clearHistory,
-            tooltip: '清除内容',
+            tooltip: '清除历史',
           ),
         ],
       ),
@@ -183,6 +189,9 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
             // 识别结果卡片
             _buildRecognitionCard(),
             const SizedBox(height: 16),
+
+            // 历史记录
+            Expanded(child: _buildHistoryCard()),
           ],
         ),
       ),
@@ -387,6 +396,66 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
     );
   }
 
+  /// 构建历史记录卡片
+  Widget _buildHistoryCard() {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            const Text(
+              '识别历史',
+              style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
+            ),
+            const SizedBox(height: 16),
+            Expanded(
+              child: _recognitionHistory.isEmpty
+                  ? Center(
+                      child: Text(
+                        '暂无识别历史',
+                        style: TextStyle(
+                          color: Colors.grey[600],
+                          fontStyle: FontStyle.italic,
+                        ),
+                      ),
+                    )
+                  : ListView.builder(
+                      itemCount: _recognitionHistory.length,
+                      itemBuilder: (context, index) {
+                        return Card(
+                          margin: const EdgeInsets.only(bottom: 8.0),
+                          child: ListTile(
+                            leading: CircleAvatar(
+                              backgroundColor: Theme.of(context).primaryColor,
+                              child: Text(
+                                '${index + 1}',
+                                style: const TextStyle(color: Colors.white),
+                              ),
+                            ),
+                            title: Text(_recognitionHistory[index]),
+                            trailing: IconButton(
+                              icon: const Icon(Icons.copy),
+                              onPressed: () {
+                                // TODO: 实现复制到剪贴板功能
+                                ScaffoldMessenger.of(context).showSnackBar(
+                                  const SnackBar(
+                                    content: Text('已复制到剪贴板'),
+                                  ),
+                                );
+                              },
+                            ),
+                          ),
+                        );
+                      },
+                    ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
   /// 构建浮动操作按钮
   Widget _buildFloatingActionButton() {
     if (!_isInitialized) {
@@ -439,6 +508,16 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
         });
 
         if (!isListening) {
+          // 录音结束后，确认当前文本并保存到历史记录
+          if (_currentText.isNotEmpty) {
+            setState(() {
+              _recognitionHistory.insert(0, _currentText);
+              // 限制历史记录数量
+              if (_recognitionHistory.length > 10) {
+                _recognitionHistory.removeLast();
+              }
+            });
+          }
           // 录音结束后，更新基础文本为下次录音做准备
           setState(() {
             _baseText = _textController.text; // 保存当前文本作为下次的基础
@@ -448,6 +527,7 @@ class _SpeechRecognitionPageState extends State<SpeechRecognitionPage> {
           // 开始录音时记录当前文本作为基础，清空当前识别文本
           setState(() {
             _baseText = _textController.text; // 记录录音开始前的文本
+            _realtimeResults.clear();
             _currentText = ''; // 清空当前识别文本
           });
         }

lib/src/models/speech_recognition_result.dart

@@ -3,14 +3,24 @@ class SpeechRecognitionResult {
   /// 识别出的文字内容
   final String recognizedWords;
 
+  /// 识别置信度（0.0 到 1.0）
+  final double confidence;
+
+  /// 备选识别结果
+  final List<String> alternatives;
+
   const SpeechRecognitionResult({
     required this.recognizedWords,
+    this.confidence = 0.0,
+    this.alternatives = const [],
   });
 
   /// 从 Map 创建 [SpeechRecognitionResult] 实例
   factory SpeechRecognitionResult.fromMap(Map<String, dynamic> map) {
     return SpeechRecognitionResult(
       recognizedWords: map['recognizedWords'] as String? ?? '',
+      confidence: (map['confidence'] as num?)?.toDouble() ?? 0.0,
+      alternatives: List<String>.from(map['alternatives'] as List? ?? []),
     );
   }
 
@@ -18,23 +28,31 @@ class SpeechRecognitionResult {
   Map<String, dynamic> toMap() {
     return {
       'recognizedWords': recognizedWords,
+      'confidence': confidence,
+      'alternatives': alternatives,
     };
   }
 
   @override
   String toString() {
-    return 'SpeechRecognitionResult(recognizedWords: $recognizedWords)';
+    return 'SpeechRecognitionResult(recognizedWords: $recognizedWords, '
+        'confidence: $confidence, alternatives: $alternatives)';
   }
 
   @override
   bool operator ==(Object other) {
     if (identical(this, other)) return true;
     return other is SpeechRecognitionResult &&
-        other.recognizedWords == recognizedWords;
+        other.recognizedWords == recognizedWords &&
+        other.confidence == confidence &&
+        other.alternatives.length == alternatives.length &&
+        other.alternatives.every((alt) => alternatives.contains(alt));
   }
 
   @override
   int get hashCode {
-    return recognizedWords.hashCode;
+    return recognizedWords.hashCode ^
+        confidence.hashCode ^
+        alternatives.hashCode;
   }
 }

lib/src/yx_asr_service.dart

@@ -221,7 +221,6 @@ class YxAsrService implements SpeechRecognitionService {
   bool _isStartingRecording = false; // 防抖保护：防止重复启动录音
   bool _isInitialized = false;
   String _currentModelPath = '';
-  String _lastRecognizedText = ''; // 记录上次识别的文本，避免重复发送
 
   // 识别速度配置
   RecognitionSpeed _recognitionSpeed = RecognitionSpeed.fast;
@@ -514,7 +513,6 @@ class YxAsrService implements SpeechRecognitionService {
         await _startAudioRecording(_sampleRate.hz);
 
         _isListening = true;
-        _lastRecognizedText = ''; // 重置上次识别的文本
         _statusController.add(true);
 
         // 开始识别循环处理
@@ -742,18 +740,13 @@ class YxAsrService implements SpeechRecognitionService {
           final result = _recognizer!.getResult(_stream!);
           debugPrint('🔍 [YxAsr] 获取识别结果: "${result.text}"');
 
-          // 只有当识别结果不为空、启用了部分结果、且与上次结果不同时才发送
+          if (result.text.isNotEmpty && partialResults) {
-          if (result.text.isNotEmpty &&
-              partialResults &&
-              result.text != _lastRecognizedText) {
             debugPrint('🎤 [YxAsr] 发送实时识别结果: ${result.text}');
-            _lastRecognizedText = result.text; // 更新最后识别的文本
             _sendResult(
               recognizedWords: result.text,
+              confidence: 0.8,
+              alternatives: [],
             );
-          } else if (result.text.isNotEmpty &&
-              result.text == _lastRecognizedText) {
-            debugPrint('🔄 [YxAsr] 跳过重复识别结果: "${result.text}"');
           }
 
           // 端点检测已禁用，由用户手动控制录音结束
@@ -769,10 +762,14 @@ class YxAsrService implements SpeechRecognitionService {
   /// 发送识别结果到结果流
   void _sendResult({
     required String recognizedWords,
+    required double confidence,
+    required List<String> alternatives,
   }) {
     debugPrint('📤 [YxAsr] 发送识别结果: "$recognizedWords"');
     final result = SpeechRecognitionResult(
       recognizedWords: recognizedWords,
+      confidence: confidence,
+      alternatives: alternatives,
     );
     _resultController.add(result);
   }