feat: add AI voice transcription fallback for domestic Android ROMs

2026-09-15 22:02:26 +08:00
parent 670260f8e2
commit 35b493e652
8 changed files with 683 additions and 90 deletions
@@ -309,6 +309,8 @@ class _AdaptiveLessonPageState extends State<AdaptiveLessonPage> {
  bool showReference = false;
  String? answerFeedback;
  bool listening = false;
+  bool transcribing = false;
+  bool aiVoiceRecording = false;
  bool usedVoice = false;
  bool transcriptEdited = false;
  bool transcriptConfirmed = false;
@@ -413,30 +415,100 @@ class _AdaptiveLessonPageState extends State<AdaptiveLessonPage> {
  }

  Future<void> _toggleListening() async {
+    if (aiVoiceRecording) {
+      final path = await VoiceService.instance.stopRecording();
+      if (!mounted) return;
+      setState(() {
+        aiVoiceRecording = false;
+        listening = false;
+        transcribing = true;
+      });
+      if (path != null) {
+        final config = widget.state.aiConfig;
+        final transcribed = await AiService.instance.transcribeAudio(
+          filePath: path,
+          provider: config.provider,
+          endpoint: config.endpoint,
+          model: config.model,
+        );
+        if (mounted) {
+          setState(() {
+            transcribing = false;
+            if (transcribed != null && transcribed.trim().isNotEmpty) {
+              controller.text = transcribed.trim();
+              usedVoice = true;
+              transcriptEdited = false;
+              transcriptConfirmed = false;
+              lastTranscript = transcribed.trim();
+            }
+          });
+          final lesson = widget.state.cachedAdaptiveLesson;
+          if (lesson != null) _saveDraft(lesson);
+          if (transcribed == null || transcribed.trim().isEmpty) {
+            ScaffoldMessenger.of(context).showSnackBar(
+              const SnackBar(content: Text('未识别到清晰语音，请再试一次或输入文本。')),
+            );
+          }
+        }
+      } else {
+        if (mounted) setState(() => transcribing = false);
+      }
+      return;
+    }
+
    if (listening) {
      await VoiceService.instance.stopListening();
      if (mounted) setState(() => listening = false);
      return;
    }
-    final ready = await VoiceService.instance.startListening((text, _) {
-      if (!mounted) return;
-      setState(() {
-        controller.text = text;
-        usedVoice = true;
-        transcriptEdited = false;
-        transcriptConfirmed = false;
-        lastTranscript = text;
-      });
-      final lesson = widget.state.cachedAdaptiveLesson;
-      if (lesson != null) _saveDraft(lesson);
-    });
+
+    final ready = await VoiceService.instance.startListening(
+      (text, _) {
+        if (!mounted) return;
+        setState(() {
+          controller.text = text;
+          usedVoice = true;
+          transcriptEdited = false;
+          transcriptConfirmed = false;
+          lastTranscript = text;
+        });
+        final lesson = widget.state.cachedAdaptiveLesson;
+        if (lesson != null) _saveDraft(lesson);
+      },
+      onStatus: (status) {
+        if (mounted && (status == 'notListening' || status == 'done')) {
+          setState(() => listening = false);
+        }
+      },
+      onError: (err) {
+        if (mounted) {
+          setState(() => listening = false);
+        }
+      },
+    );
+
+    if (!ready) {
+      final recordStarted = await VoiceService.instance.startRecording();
+      if (mounted) {
+        setState(() {
+          aiVoiceRecording = recordStarted;
+          listening = recordStarted;
+        });
+        if (recordStarted) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(content: Text('已启动麦克风录音，说完后再次点击，AI 将自动转写为英文。')),
+          );
+        } else {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(content: Text('无法访问麦克风，请检查录音权限。你仍可输入英文完成补练。')),
+          );
+        }
+      }
+      return;
+    }
+
    if (!mounted) return;
    setState(() => listening = ready);
-    if (!ready) {
-      ScaffoldMessenger.of(
-        context,
-      ).showSnackBar(const SnackBar(content: Text('语音识别不可用；你仍可输入英文完成补练。')));
-    }
  }

  Future<void> _toggleRecording() async {
@@ -590,11 +662,22 @@ class _AdaptiveLessonPageState extends State<AdaptiveLessonPage> {
              filled: true,
              fillColor: AppColors.surface,
              prefixIcon: IconButton(
-                tooltip: listening ? '停止语音输入' : '语音输入',
+                tooltip: transcribing
+                    ? '正在 AI 识别…'
+                    : (listening ? '停止录音并识别' : '语音输入'),
                onPressed: _toggleListening,
-                icon: Icon(
-                  listening ? Icons.stop_circle_outlined : Icons.mic_none,
-                ),
+                icon: transcribing
+                    ? const SizedBox(
+                        width: 18,
+                        height: 18,
+                        child: CircularProgressIndicator(strokeWidth: 2),
+                      )
+                    : Icon(
+                        listening
+                            ? Icons.stop_circle_outlined
+                            : Icons.mic_none,
+                        color: listening ? AppColors.green : null,
+                      ),
              ),
              border: OutlineInputBorder(),
            ),