解决问题：6.短视频朝下滑一下会停止

lib/pages/live/activity/activity_preview_page.dart

@@ -21,10 +21,13 @@ import 'package:recook/widgets/recook/recook_like_button.dart';
 class ActivityPreviewPage extends StatefulWidget {
   final ActivityListModel model;
   final LiveBaseInfoModel userModel;
+  final PageController controller;
+  final int page;
   ActivityPreviewPage({
     Key key,
     @required this.model,
     @required this.userModel,
+    this.controller, this.page,
   }) : super(key: key);
 
   @override
@@ -306,7 +309,11 @@ class _ActivityPreviewPageState extends State<ActivityPreviewPage> {
   }
 
   _buildVideo() {
-    return NetworkFileVideo(path: widget.model.short.mediaUrl);
+    return NetworkFileVideo(
+      path: widget.model.short.mediaUrl,
+      pageController: widget.controller,
+      page: widget.page,
+    );
   }
 
   _buildImages() {

lib/pages/live/activity/video_fall_through_page.dart

@@ -36,6 +36,8 @@ class _VideoFallThroughPageState extends State<VideoFallThroughPage> {
         scrollDirection: Axis.vertical,
         itemBuilder: (context, index) {
           return ActivityPreviewPage(
+            controller: _pageController,
+            page: index,
             model: ActivityListModel.fromVideoList(widget.models[index]),
             userModel:
                 LiveBaseInfoModel.fromVideoListModel(widget.models[index]),

lib/pages/live/widget/network_file_video.dart

@@ -5,10 +5,14 @@ import 'package:video_player/video_player.dart';
 class NetworkFileVideo extends StatefulWidget {
   final String path;
   final double aspectRatio;
+  final PageController pageController;
+  final int page;
   NetworkFileVideo({
     Key key,
     @required this.path,
     this.aspectRatio,
+    this.pageController,
+    this.page,
   }) : super(key: key);
 
   @override
@@ -32,11 +36,20 @@ class _NetworkFileVideoState extends State<NetworkFileVideo> {
         videoPlayerController: _videoPlayerController,
       );
       setState(() {});
+      widget.pageController.addListener(pageControllerListener);
     });
   }
 
+  pageControllerListener() {
+    if (widget.pageController.page.round() == widget.page) {
+      _chewieController.play();
+    }
+    ;
+  }
+
   @override
   void dispose() {
+    widget.pageController.removeListener(pageControllerListener);
     _chewieController?.dispose();
     _videoPlayerController?.dispose();
     super.dispose();