发生颤振错误：添加的位置（$position）的时间戳（$time）比其前一个位置的时间戳（$previousPoint）小

Question

我有一个使用NestedScrollView构建的滚动页面的问题。在滚动开始时有一定的概率报告错误。这里看到错误：

I/flutter ( 6574): ══╡ EXCEPTION CAUGHT BY GESTURE LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter ( 6574): The following assertion was thrown while routing a pointer event:
I/flutter ( 6574): The position being added (Offset(71.3, 253.9)) has a smaller timestamp (106:11:02.860000)than its
I/flutter ( 6574): predecessor: _PointAtTime(Offset(71.0, 252.9) at 106:11:02.867000).
I/flutter ( 6574): 
I/flutter ( 6574): When the exception was thrown, this was the stack:
I/flutter ( 6574): #0      IOSScrollViewFlingVelocityTracker.addPosition.<anonymous closure> (package:flutter/src/gestures/velocity_tracker.dart:307:7)
I/flutter ( 6574): #1      IOSScrollViewFlingVelocityTracker.addPosition (package:flutter/src/gestures/velocity_tracker.dart:311:6)
I/flutter ( 6574): #2      DragGestureRecognizer.handleEvent (package:flutter/src/gestures/monodrag.dart:277:15)
I/flutter ( 6574): #3      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
I/flutter ( 6574): #4      PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
I/flutter ( 6574): #5      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
I/flutter ( 6574): #6      PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
I/flutter ( 6574): #7      PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
I/flutter ( 6574): #8      GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:358:19)
I/flutter ( 6574): #9      GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
I/flutter ( 6574): #10     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
I/flutter ( 6574): #11     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
I/flutter ( 6574): #12     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
I/flutter ( 6574): #13     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
I/flutter ( 6574): #17     _invoke1 (dart:ui/hooks.dart:265:10)
I/flutter ( 6574): #18     _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
I/flutter ( 6574): (elided 3 frames from dart:async)
I/flutter ( 6574): 
I/flutter ( 6574): router: Instance of 'PointerRouter'
I/flutter ( 6574): route: Closure: (PointerEvent) => void from Function 'handleEvent':.
I/flutter ( 6574): event: PointerMoveEvent#0e017(position: Offset(71.3, 372.3))
I/flutter ( 6574): ════════════════════════════════════════════════════════════════════════════════════════════════════

颤振环境信息：

[✓] 颤振（通道稳定，1.22.5，在macOS 11.1 20C69 darwin-x64上，locale zh Hans CN）•颤振版本1.22.5 at/Users/fox/Documents/flatter•框架版本7891006299（3个月前），2020-12-10 11:54:40-0800•引擎版本ae90085a84•Dart版本2.10.4•Pub下载镜像https://pub.flutter-io.cn•颤振下载镜像https://storage.flutter-io.cn

[✓]Android工具链-为Android设备开发（Android软件开发工具包版本30.0.3）Android软件开发工具包在 /Users/fox/Library/Android/sdk平台Android-30，构建工具30.0.3Java二进制文件在： /Applications/AndroidStudio.app/Contents/jre/jdk/Contents/Home/bin/javaJava版OpenJDK运行时环境（构建1.8。0_242-发布-1644-b3-6915495）接受所有Android许可证。

[✓] Xcode-为iOS和macOS开发（Xcode 12.3）•Xcode at/Applications/Xcode。应用程序/内容/开发者•Xcode 12.3，构建版本12C33•CocoaPods版本1.10.1

[！]Android Studio（4.1版）Android Studio at /Applications/AndroidStudio.app/Contents未安装Flutter插件；这增加了Flutter特定功能。未安装Dart插件；这增加了Dart特定功能。Java版OpenJDK运行时环境（构建1.8。0_242-发布-1644-b3-6915495）

[✓] 连接设备（2个可用）•YAL AL10（移动）•6QDDU19627031486•Androidarm64•Android10（API 29）•iPhone 12 Pro Max（移动）•BFF76ECD-93DE-4C0F-A171-BC1B705FF802•ios•com.apple.CoreSimulator.SimRuntime。iOS-14-3（模拟器）

！医生发现1类问题。

Answer 1

我能够通过删除main.dart文件中的以下行来解决此问题：

GestureBinding.instance!.resamplingEnabled = true;