添加校验是否音频文件

lib/modules/meeting/controllers/meeting_home_controller.dart

@@ -308,6 +308,19 @@ class MeetingHomeController extends GetxController {
       );
       if (result != null) {
         PlatformFile file = result.files.first;
+
+        if (!_isAudioFile(file.name)) {
+          Get.snackbar(
+            'error'.tr, // 错误
+            '请选择音频文件',
+            snackPosition: SnackPosition.TOP,
+            backgroundColor: Colors.red.withOpacity(0.1),
+            colorText: Colors.red,
+          );
+          EasyLoading.dismiss();
+          return;
+        }
+
         filePath = await _saveFile(file);
         fileName = file.name;
       } else {
@@ -424,4 +437,10 @@ class MeetingHomeController extends GetxController {
       await file.delete();
     }
   }
+
+  bool _isAudioFile(String fileName) {
+    const List audioExtensions = ['.mp3', '.wav', '.m4a', '.aac'];
+    final extension = path.extension(fileName).toLowerCase();
+    return audioExtensions.contains(extension);
+  }
 }