From 5f23085b070c8eb9ef540479f1f14f820c503033 Mon Sep 17 00:00:00 2001
From: anchi <anchi1@huawei.com>
Date: Wed, 20 Nov 2024 11:45:06 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=92=E5=B8=A7?=
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Signed-off-by: anchi <anchi1@huawei.com>
---
 packages/flutter/lib/src/scheduler/binding.dart        | 5 +++++
 packages/flutter/lib/src/services/system_channels.dart | 5 +++++
 packages/flutter/lib/src/widgets/scroll_position.dart  | 1 +
 packages/flutter/lib/src/widgets/scrollable.dart       | 2 ++
 4 files changed, 13 insertions(+)

diff --git a/packages/flutter/lib/src/scheduler/binding.dart b/packages/flutter/lib/src/scheduler/binding.dart
index 8820c7cf04..3a2dc87e87 100644
--- a/packages/flutter/lib/src/scheduler/binding.dart
+++ b/packages/flutter/lib/src/scheduler/binding.dart
@@ -9,6 +9,7 @@ import 'dart:ui' show AppLifecycleState, DartPerformanceMode, FramePhase, FrameT
 
 import 'package:collection/collection.dart' show HeapPriorityQueue, PriorityQueue;
 import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
 
 import 'debug.dart';
 import 'priority.dart';
@@ -1310,6 +1311,10 @@ mixin SchedulerBinding on BindingBase {
       return true;
     }());
   }
+
+  void setDVsyncSwitch(bool isEnable) {
+    SystemChannels.nativeVsync.send(<String, dynamic>{"isEnable": isEnable});
+  }
 }
 
 /// The default [SchedulingStrategy] for [SchedulerBinding.schedulingStrategy].
diff --git a/packages/flutter/lib/src/services/system_channels.dart b/packages/flutter/lib/src/services/system_channels.dart
index c69c7e5e77..13531d3fb1 100644
--- a/packages/flutter/lib/src/services/system_channels.dart
+++ b/packages/flutter/lib/src/services/system_channels.dart
@@ -465,4 +465,9 @@ class SystemChannels {
   ///
   ///  * [DefaultPlatformMenuDelegate], which uses this channel.
   static const MethodChannel menu = OptionalMethodChannel('flutter/menu');
+
+  static const BasicMessageChannel<Object?> nativeVsync = BasicMessageChannel<Object?>(
+    'flutter/nativevsync',
+    StandardMessageCodec(),
+  );
 }
diff --git a/packages/flutter/lib/src/widgets/scroll_position.dart b/packages/flutter/lib/src/widgets/scroll_position.dart
index db363517c3..e9f8de32d2 100644
--- a/packages/flutter/lib/src/widgets/scroll_position.dart
+++ b/packages/flutter/lib/src/widgets/scroll_position.dart
@@ -916,6 +916,7 @@ abstract class ScrollPosition extends ViewportOffset with ScrollMetrics {
   ///
   /// This also saves the scroll offset using [saveScrollOffset].
   void didEndScroll() {
+    SchedulerBinding.instance.setDVsyncSwitch(false);
     activity!.dispatchScrollEndNotification(copyWith(), context.notificationContext!);
     saveOffset();
     if (keepScrollOffset) {
diff --git a/packages/flutter/lib/src/widgets/scrollable.dart b/packages/flutter/lib/src/widgets/scrollable.dart
index 158228c23a..1415fc363e 100644
--- a/packages/flutter/lib/src/widgets/scrollable.dart
+++ b/packages/flutter/lib/src/widgets/scrollable.dart
@@ -709,6 +709,7 @@ class ScrollableState extends State<Scrollable> with TickerProviderStateMixin, R
     // triggers a new activity to begin.
     assert(_drag == null);
     _drag = position.drag(details, _disposeDrag);
+    SchedulerBinding.instance.setDVsyncSwitch(false);
     assert(_drag != null);
     assert(_hold == null);
   }
@@ -723,6 +724,7 @@ class ScrollableState extends State<Scrollable> with TickerProviderStateMixin, R
     // _drag might be null if the drag activity ended and called _disposeDrag.
     assert(_hold == null || _drag == null);
     _drag?.end(details);
+    SchedulerBinding.instance.setDVsyncSwitch(true);
     assert(_drag == null);
   }
 
-- 
Gitee