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android-studio - 我的飞镖代码中的错误和 android studio 的其他错误

问题描述

注意：我是颤振和飞镖的初学者，所以请让答案易于理解

  1. 当我打开avd管理器并运行手机时，它显示“无法找到adb”然后打开手机。
  2. （加载时间较长）
  3. 当我在 android studio 中运行程序时，我得到了这些错误：（在颤振控制台中也有同样的错误）
C:\Flutter SDK\flutter\bin\cache\dart-sdk\bin\dart.exe" --enable-asserts --enable-vm-service:58163 C:\Users\user\my_app\lib\main.dart
lib/main.dart: Warning: Interpreting this as package URI, 'package:my_app/main.dart'.
Observatory listening on http://127.0.0.1:58163/ozLrsFGRARk=/

/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/animated_icons.dart:9:8: Error: Not found: 'dart:ui'
import 'dart:ui' as ui show Paint, Path, Canvas;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/animated_icons.dart:10:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/app.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' as ui;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/app_bar_theme.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/arc.dart:6:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/bottom_app_bar_theme.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/bottom_sheet.dart:6:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/bottom_sheet_theme.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/button_bar_theme.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
/C:/Flutter%20SDK/flutter/packages/flutter/lib/src/material/card_theme.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^

Process finished with exit code 254
  1. 手机加载时“系统 UI 没有响应”

颤振医生没有给我任何错误

手机上什么都没有

似乎找不到“dart：ui”？

我什至不知道那是什么，我按照本书中的步骤进行操作：

https://www.amazon.com/Beginning-App-Development-Flutter-Cross-Platform/dp/1484251806/ref=sr_1_3?dchild=1&keywords=flutter&qid=1593032118&sr=8-3

另请注意：我是stackoverflow的新手，这是我的第一个问题

我使用颤振创建示例

还有一件事，我如何连接我的 iphone 并在其上运行示例？

谢谢你。

标签： android-studioflutterdart

解决方案

创建具有不同屏幕尺寸的新虚拟设备。

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