在将flutter更新到1.22.0-12.0.pre之后，错误包：Flutter / src / widgets / scroll_position.dart'：_pendingDimensions'：不正确

问题描述

今天，将fld sdk更新为1.22.0-12.0。无论在何处使用SmartRefresher软件包，我都可以在稳定和开发通道中得到此异常，但是该程序运行良好

'package:Flutter/src/widgets/scroll_position.dart': Failed assertion: line 582 pos 12: '_pendingDimensions': is not true.
The relevant error-causing widget was
    MaterialClassicHeader 

颤抖的医生

Doctor summary (to see all details,run Flutter doctor -v):
[√] Flutter (Channel dev,1.22.0-12.0.pre,on Microsoft Windows [Version 10.0.19041.450],locale en-US)
 
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[!] Android Studio (version 4.0)
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
[√] VS Code (version 1.49.1)
[√] Connected device (1 available)

! Doctor found issues in 1 category.

我经常使用代码，但无法解决问题 谁能给我解决方案？

谢谢

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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