android ui flutter,android-如何在运行flutter应用程序时解决’dart:ui’错误?

android ui flutter,android-如何在运行flutter应用程序时解决’dart:ui’错误?_第1张图片Below错误发生在我尝试运行我的第一个flutter应用程序时.

file:///Volumes/Data/FlutterSDk/flutter/packages/flutter/lib/src/cupertino/action_sheet.dart:5:8: Error: Not found: 'dart:ui'

import 'dart:ui' show ImageFilter;

^

file:///Volumes/Data/FlutterSDk/flutter/packages/flutter/lib/src/cupertino/bottom_tab_bar.dart:5:8: Error: Not found: 'dart:ui'

import 'dart:ui' show ImageFilter;

^

file:///Volumes/Data/FlutterSDk/flutter/packages/flutter/lib/src/cupertino/colors.dart:5:8: Error: Not found: 'dart:ui'

import 'dart:ui' show Color;

^

file:///Volumes/Data/FlutterSDk/flutter/packages/flutter/lib/src/cupertino/dialog.dart:6:8: Error: Not found: 'dart:ui'

import 'dart:ui' show

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