优化语音功能

android/app/build.gradle

@@ -8,7 +8,7 @@ if (localPropertiesFile.exists()) {
 
 def flutterRoot = localProperties.getProperty('flutter.sdk')
 if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+    throw new FileNotFoundException ("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
 }
 
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')

android/app/src/main/AndroidManifest.xml

@@ -5,6 +5,8 @@
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
     <queries>
         <intent>
             <action android:name="android.speech.RecognitionService" />

lib/home_page.dart

@@ -92,6 +92,8 @@ class _HomePageState extends State<HomePage> {
 
   int _currentIndex = 0;
 
+  bool _hasSpeechPermission = false;
+
   @override
   void initState() {
     super.initState();
@@ -162,15 +164,47 @@ class _HomePageState extends State<HomePage> {
   }
 
   Future<void> initSpeechToText() async {
-    await speechToText.initialize();
-
+    try {
+      _hasSpeechPermission = await speechToText.initialize(
+        onStatus: (status) {
+          print('语音状态: $status');
+          if (status == 'notListening') {
+            setState(() => _isListeningPressed = false);
+          }
+        },
+        onError: (error) {
+          print('语音错误: $error');
+          setState(() => _isListeningPressed = false);
+          _showErrorDialog('语音初始化失败，请检查麦克风权限');
+        },
+      );
+    } catch (e) {
+      print('语音初始化错误: $e');
+      _hasSpeechPermission = false;
+    }
     setState(() {});
   }
 
   Future<void> startListening() async {
-    await speechToText.listen(onResult: onSpeechResult);
+    if (!_hasSpeechPermission) {
+      _showErrorDialog('请先授予麦克风权限');
+      setState(() => _isListeningPressed = false);
+      return;
+    }
 
-    setState(() {});
+    try {
+      await speechToText.listen(
+        onResult: onSpeechResult,
+        localeId: 'zh_CN',
+        listenMode: ListenMode.confirmation,
+        cancelOnError: true,
+        partialResults: true,
+      );
+    } catch (e) {
+      print('开始录音失败: $e');
+      setState(() => _isListeningPressed = false);
+      _showErrorDialog('启动语音识别失败，请重试');
+    }
   }
 
   Future<void> stopListening() async {
@@ -372,38 +406,32 @@ class _HomePageState extends State<HomePage> {
           Expanded(
             child: _isVoiceMode
                 ? GestureDetector(
-                    onLongPressStart: (_) async {
+                    onTap: () async {
+                      if (!_isListeningPressed) {
+                        // 开始录音
                         setState(() {
                           _isListeningPressed = true;
-
                           _currentVoiceText = '';
                         });
-
                         await startListening();
-                    },
-                    onLongPressEnd: (_) async {
+                      } else {
+                        // 停止录音
                         setState(() => _isListeningPressed = false);
-
                         await stopListening();
                         
-                      final finalVoiceText = _currentVoiceText;
-
-                      if (finalVoiceText.isNotEmpty) {
+                        // 确保有语音文本才处理
+                        if (_currentVoiceText.isNotEmpty) {
                           setState(() {
                             messages.add(ChatMessage(
-                            text: finalVoiceText,
+                              text: _currentVoiceText,
                               isUserMessage: true,
                             ));
-
                             _isLoading = true;
                           });
-
-                        await _processAIResponse(finalVoiceText);
+                          await _processAIResponse(_currentVoiceText);
+                        }
+                        setState(() => _currentVoiceText = '');
                       }
-
-                      setState(() {
-                        _currentVoiceText = '';
-                      });
                     },
                     child: Container(
                       padding: const EdgeInsets.symmetric(
@@ -414,12 +442,20 @@ class _HomePageState extends State<HomePage> {
                         color: Colors.grey[100],
                         borderRadius: BorderRadius.circular(25),
                       ),
-                      child: Text(
+                      child: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          Icon(
+                            _isListeningPressed ? Icons.stop : Icons.mic,
+                            color: _isListeningPressed
+                                ? Pallete.firstSuggestionBoxColor
+                                : Colors.grey[600],
+                          ),
+                          const SizedBox(width: 8),
+                          Text(
                             _isListeningPressed
-                            ? (_currentVoiceText.isEmpty
-                                ? '正在聆听...'
-                                : _currentVoiceText)
-                            : '按住说话',
+                                ? (_currentVoiceText.isEmpty ? '点击停止' : _currentVoiceText)
+                                : '点击说话',
                             textAlign: TextAlign.center,
                             style: TextStyle(
                               color: _isListeningPressed
@@ -427,6 +463,8 @@ class _HomePageState extends State<HomePage> {
                                   : Colors.grey[600],
                             ),
                           ),
+                        ],
+                      ),
                     ),
                   )
                 : TextField(
@@ -703,7 +741,7 @@ class _HomePageState extends State<HomePage> {
                             ),
                             const SizedBox(width: 8),
                             Text(
-                              '退出登录',
+                              '出登录',
                               style: TextStyle(
                                 color: Colors.red[700],
                                 fontSize: 16,
@@ -724,6 +762,22 @@ class _HomePageState extends State<HomePage> {
     );
   }
 
+  void _showErrorDialog(String message) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('提示'),
+        content: Text(message),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text('确定'),
+          ),
+        ],
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -850,3 +904,4 @@ class _HomePageState extends State<HomePage> {
     );
   }
 }
+
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