错误：未找到：'dart:ui' export 'dart:ui' show Offset;

Question

When i run on Android Studio

flutter drive --target=test_driver/app.dart

And i got this output

file:///C:/flutter/packages/flutter_test/lib/src/accessibility.dart:8:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui;

file:///C:/flutter/packages/flutter_test/lib/src/binding.dart:9:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui; ^

file:///C:/flutter/packages/flutter_test/lib/src/matchers.dart:8:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui; ^

file:///C:/flutter/packages/flutter_test/lib/src/matchers.dart:9:8: Error: Not found: 'dart:ui' import 'dart:ui';

file:///C:/flutter/packages/flutter_test/lib/src/test_pointer.dart:12:1: Error: Not found: 'dart:ui' export 'dart:ui' show Offset; ^

file:///C:/flutter/packages/flutter_test/lib/src/window.dart:6:8: Error: Not found: 'dart:ui' import 'dart:ui' hide window;

file:///C:/flutter/packages/flutter/lib/src/rendering/box.dart:6:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui show lerpDouble;

file:///C:/flutter/packages/flutter/lib/src/rendering/debug_overflow_indicator.dart:6:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui;

file:///C:/flutter/packages/flutter/lib/src/rendering/editable.dart:6:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui show TextBox, lerpDouble;

file:///C:/flutter/packages/flutter/lib/src/rendering/error.dart:5:8: Error: Not found: 'dart:ui' import 'dart:ui' as ui show Paragraph, ParagraphBuilder, ParagraphConstraints, ParagraphStyle,

Stopping application instance. Driver tests failed: 254

My flutter doctor -v

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2) • Android SDK at C:\Users\ROG\AppData\Local\Android\Sdk • Android NDK location not configured (optional; useful for native profiling support) • Platform android-29, build-tools 29.0.2 • ANDROID_HOME = C:\Users\ROG\AppData\Local\Android\Sdk • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03) • All Android licenses accepted.

[√] Chrome - develop for the web • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[.] Visual Studio - develop for Windows (Visual Studio Community 2017 15.9:7) • Visual Studio at C.\Program Files (x86)\Microsoft Visual Studio\2017\Community • Visual Studio Community 2017 version 15.9.28307.423 X Visual Studio is missing necessary components, Please re-run the Visual Studio installer for the "Desktop development with C++" workload: and include these components. MSBuild VC++ 2017 version 15.9 v14.16 latest v141 tools Windows 10 SDK (10.0.17763.0)

[√] Android Studio (version 3.5) • Android Studio at C:\Program Files\Android\Android Studio • Flutter plugin version 40.2.2 • Dart plugin version 191.8593 • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] IntelliJ IDEA Community Edition (version 2019.2) • IntelliJ at G:\IntelliJ IDEA Community Edition 2019.2.3 • Flutter plugin version 40.2.4 • Dart plugin version 192.7402

[√] VS Code, 64-bit edition (version 1.29.1) • VS Code at C:\Program Files\Microsoft VS Code • Flutter extension version 2.21.1

[√] Connected device (3 available) • Samsung Galaxy S9 1 • 192.168.126.103:5555 • android-x86 • Android 8.0.0 (API 26) • Windows • Windows • windows-x64 • Microsoft Windows [Version 10.0.18362.418] • web • web • web-javascript • Google Chrome 78.0.3904.70

. Doctor found issues in 1 category.

Any thoughts? Please help, thankyou so much

Answer 1

When running the app, you will find 2 main.dart Choose the one with the flutter icon beside it

add check all component that is necessarily required and update all

a. Launch the "Microsoft Visual Studio Installer" from your start menu.

b. Select "Modify" for the instance of Visual Studio 2017 you have installed.

c. Under the "Summary" pane of the workload selector, click the "Desktop development with C++" expander (if it is collapsed)

d. Check the "VC++ 2015.3 v140 toolset (x86,x64)" optional feature.

[2] If you're attempting to build a UWP application, you should install Visual Studio 2015 Update 3, selection the UWP optional feature during setup.

[3] Finally, you may also upgrade your project/solution to the v141 Platform Toolset, which is the default for Visual Studio 2017.

Answer 2

Make sure your test file which has the driver does not contain any flutter-related imports.

so app_test should have nothing to do with flutter, only dart.