[new]调整仅显示音频列表

lib/handler/audio_picker_handler.dart

@@ -8,9 +8,9 @@ class AudioPickerHandler {
   //申请权限
   static Future<bool> requestPermissionExtend() async {
     final PermissionState ps = await PhotoManager.requestPermissionExtend(
-        requestOption: PermissionRequestOption(
+        requestOption: const PermissionRequestOption(
             androidPermission: AndroidPermission(
-      type: RequestType(RequestType.audio.value | RequestType.video.value),
+      type: RequestType.audio,
       mediaLocation: false,
     )));
     return ps.hasAccess;
@@ -32,7 +32,7 @@ class AudioPickerHandler {
     );
     final List<AssetPathEntity> paths = await PhotoManager.getAssetPathList(
       onlyAll: true,
-      type: RequestType(RequestType.audio.value | RequestType.video.value),
+      type: RequestType.audio,
       filterOption: filter,
     );
     return paths;