[Fix]修复录音暂停后重复使用导致的异常

lib/module/record/controller.dart

@@ -24,13 +24,13 @@ class RecordController extends BaseController {
       FrameAnimationController(autoPlay: false);
   final Rx<RecordStatus> currentStatus = RecordStatus.pending.obs;
   final RxDouble currentDuration = 0.0.obs;
-  final AudioRecorder record = AudioRecorder();
-  final RecordConfig recordConfig = const RecordConfig(
+  final AudioRecorder _record = AudioRecorder();
+  final RecordConfig _recordConfig = const RecordConfig(
       encoder: AudioEncoder.pcm16bits,
       bitRate: 128000,
       sampleRate: 44100,
       numChannels: 2);
-  late final String lastRecordId;
+  late final String _lastRecordId;
 
   @override
   void onInit() {
@@ -39,13 +39,19 @@ class RecordController extends BaseController {
     _initLastRecordStatus();
   }
 
+  @override
+  void onClose() {
+    super.onClose();
+    _record.dispose();
+  }
+
   void _initLastRecordId() {
     String? lastRecordId = KVUtil.getString(keyLastRecordId, null);
     if (lastRecordId == null || lastRecordId.isEmpty) {
-      this.lastRecordId = const Uuid().v4();
-      KVUtil.putString(keyLastRecordId, this.lastRecordId);
+      _lastRecordId = const Uuid().v4();
+      KVUtil.putString(keyLastRecordId, _lastRecordId);
     } else {
-      this.lastRecordId = lastRecordId;
+      _lastRecordId = lastRecordId;
     }
   }
 
@@ -55,7 +61,7 @@ class RecordController extends BaseController {
     if (currentRecordFile.existsSync() && fileLength > 0) {
       _changeRecordStatus(RecordStatus.paused);
       currentDuration.value = _getPcmDuration(
-          fileLength, recordConfig.sampleRate, 16, recordConfig.numChannels);
+          fileLength, _recordConfig.sampleRate, 16, _recordConfig.numChannels);
     }
   }
 
@@ -117,19 +123,19 @@ class RecordController extends BaseController {
   }
 
   Future<void> _startOrContinueRecord() async {
-    bool hasPermission = await record.hasPermission();
+    bool hasPermission = await _record.hasPermission();
     if (!hasPermission) {
       _onRecordPermissionDenied();
       return;
     }
     File targetFile = await _getCurrentRecordFile();
-    Stream<Uint8List> recordStream = await record.startStream(recordConfig);
+    Stream<Uint8List> recordStream = await _record.startStream(_recordConfig);
     _changeRecordStatus(RecordStatus.recording);
     recordStream.listen((data) async {
       targetFile.writeAsBytesSync(data, mode: FileMode.append);
       currentDuration.value = currentDuration.value +
-          _getPcmDuration(data.length, recordConfig.sampleRate, 16,
-              recordConfig.numChannels);
+          _getPcmDuration(data.length, _recordConfig.sampleRate, 16,
+              _recordConfig.numChannels);
     }, onDone: () {
       _changeRecordStatus(RecordStatus.paused);
     }, onError: (error) {
@@ -140,12 +146,12 @@ class RecordController extends BaseController {
   _onRecordPermissionDenied() {}
 
   Future<void> _stopRecord() {
-    return record.stop().then((_) => _changeRecordStatus(RecordStatus.paused));
+    return _record.pause().then((_) => _changeRecordStatus(RecordStatus.paused));
   }
 
   Future<File> _getCurrentRecordFile() async {
     Directory documentDir = await getApplicationDocumentsDirectory();
-    File file = File("${documentDir.path}/.atmob/record/$lastRecordId");
+    File file = File("${documentDir.path}/.atmob/record/$_lastRecordId");
     if (!file.existsSync()) {
       file.createSync(recursive: true);
     }
@@ -174,13 +180,13 @@ class RecordController extends BaseController {
   Future<void> _saveCurrentRecord() async {
     await _stopRecord();
     talkRepository
-        .talkCreate(lastRecordId, currentDuration.value.toInt())
+        .talkCreate(_lastRecordId, currentDuration.value.toInt())
         .then((talkInfo) async {
       File pcmFile = await _getCurrentRecordFile();
       if (pcmFile.existsSync()) {
         File wavFile = await getRecordFile(talkInfo.id);
-        PcmWavConverter.convert(pcmFile, wavFile, recordConfig.sampleRate,
-            recordConfig.numChannels, 16);
+        PcmWavConverter.convert(pcmFile, wavFile, _recordConfig.sampleRate,
+            _recordConfig.numChannels, 16);
         pcmFile.delete();
         Get.back();
         TalkPage.start(talkInfo);