Question

更新pubspec.yaml文件后获取错误例如我正在尝试添加 fluttertoast：^ 7.1.1 pubspec.yaml中的相关性，并导入“ package：fluttertoast / fluttertoast.dart”; 在main.dart中

当我运行此项目时出现错误：

Running Xcode build...                                                  
Xcode build done.                                            8.4s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    lib/main.dart:29:9: Error: No named parameter with the name 'visualDensity'.
            visualDensity: VisualDensity.adaptivePlatformDensity,
            ^^^^^^^^^^^^^
    ../../../flutter/packages/flutter/lib/src/material/theme_data.dart:201:11: Context: Found this candidate, but the arguments don't
    match.
      factory ThemeData({
              ^
    ../../../flutter/packages/flutter/lib/src/widgets/media_query.dart:126:32: Error: The getter 'physicalDepth' isn't defined for the
    class 'Window'.
     - 'Window' is from 'dart:ui'.
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'physicalDepth'.
            physicalDepth = window.physicalDepth,
                                   ^^^^^^^^^^^^^

    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Planning build
    note: Constructing build description

Could not build the application for the simulator.
Error launching application on iPhone 8.

任何人都有逐步解决方案。

谢谢。

Answer 1

似乎ThemeData类未正确加载到内存中。试试这个解决方案：

flutter clean
flutter pub cache repair

右键单击控制台中的ThemeData /错误
转到C：\ BACKUP \ flutter \包\ flutter \ lib \ src \材质\ theme_data.dart。
查找VisualDensity定义以查看是否存在

如果上述方法无效，请尝试将以下内容添加到您的MaterialApp中：

  ThemeData(
     primarySwatch: appThemeColor,
     visualDensity: VisualDensity.adaptivePlatformDensity,
   )

Flutter：“ pod更新”后，项目无法编译

1 个答案: