更新flutter SDK 2.0后出现错误DiagnosticableMixin [英] Getting error DiagnosticableMixin after Update flutter SDK 2.0

问题描述

在更新flutter SDK 2.0之后，我遇到了以下错误.

After Update flutter SDK 2.0 i am getting below error.

../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26 + 2/lib/src/date_picker_theme.dart:23:32:错误:输入找不到DiagnosticableMixin.带有DiagnosticableMixin的类DateTimePickerTheme {^^^^^^^^^^^^^^^^^^^^../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26+2/lib/src/date_picker_theme.dart:23:7:错误:"DiagnosticableMixin"类型不能混入.带有DiagnosticableMixin的类DateTimePickerTheme {^../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26+2/lib/src/date_picker.dart:103:34:错误:没有命名参数名称为"shadowThemeOnly".主题:Theme.of(context，shadowThemeOnly:true)，^^^^^^^^^^^^^^^^../../SDK/flutter/packages/flutter/lib/src/material/theme.dart:107:20:上下文:找到了该候选者，但参数不匹配.(BuildContext context){

../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26+2/lib/src/date_picker_theme.dart:23:32: Error: Type 'DiagnosticableMixin' not found. class DateTimePickerTheme with DiagnosticableMixin { ^^^^^^^^^^^^^^^^^^^ ../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26+2/lib/src/date_picker_theme.dart:23:7: Error: The type 'DiagnosticableMixin' can't be mixed in. class DateTimePickerTheme with DiagnosticableMixin { ^ ../../SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_cupertino_date_picker-1.0.26+2/lib/src/date_picker.dart:103:34: Error: No named parameter with the name 'shadowThemeOnly'. theme: Theme.of(context, shadowThemeOnly: true), ^^^^^^^^^^^^^^^ ../../SDK/flutter/packages/flutter/lib/src/material/theme.dart:107:20: Context: Found this candidate, but the arguments don't match. static ThemeData of(BuildContext context) {

推荐答案

检查flutter_cupertino_date_picker库.date_picker_theme.dart文件具有以下代码.

check flutter_cupertino_date_picker lib. date_picker_theme.dart file have Below Code.

 class DateTimePickerTheme with DiagnosticableMixin {
  }

在Flutter 2.0版本中，它们删除了falvor DiagnosticableMixin.因此，请使用Diagnosticable删除DiagnosticableMixin.按照以下代码更改date_picker_theme.dart文件.

In Flutter 2.0 version they remove falvor DiagnosticableMixin. so remove DiagnosticableMixin with Diagnosticable. change date_picker_theme.dart file as per below code.

  class DateTimePickerTheme with Diagnosticable {
  }

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