将提供程序包添加到 flutter web 项目时出错

Question

我尝试将提供程序包添加到我的 flutter web 项目中，但出现以下错误：

Because every version of provider depends on flutter any from sdk which is >forbidden, provider is forbidden. So, because WebApplication depends on provider ^3.0.0, version solving >failed.

Flutter users should run flutter packages get instead of pub get. Process finished with exit code 69

我试过了flutter packages get，也把flutter升级到了最新版本。当运行 flutter packages get 时未显示错误，但当我尝试 webdev serve 时显示以下错误：

webdev could not run for this project. Could not find a file named "pubspec.yaml" in >"C:\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\provider-3.0.0".

我也看了广告 https://github.com/flutter/flutter/issues/21338 但没有解决我的错误。

我在 Microsoft Windows [版本 10.0.17134.765] 上使用 Flutter（Channel beta，v1.6.3）

environment:
  sdk: '>=2.3.0-dev.0.1 <3.0.0'

dependencies:
  flutter_web: any
  flutter_web_ui: any
  provider: ^3.0.0

dev_dependencies:
  build_runner: ^1.4.0
  build_web_compilers: ^2.0.0
  pedantic: ^1.0.0

Answer 1

您的问题已经在这里得到解答：https://github.com/rrousselGit/provider/issues/82

使用 kevmoo https://github.com/kevmoo/provider povider 分支的 flutter_web 分支作为：

dependencies:
  flutter_web: any
  flutter_web_ui: any
  provider: any

dependency_overrides:
  flutter_web:
    git:
      url: https://github.com/flutter/flutter_web
      path: packages/flutter_web
  flutter_web_ui:
    git:
      url: https://github.com/flutter/flutter_web
      path: packages/flutter_web_ui
  provider:
    git:
      url: https://github.com/kevmoo/provider
      ref: flutter_web

Answer 2

您可以通过从 github 获取源代码包并在包内的 lib 文件中获取代码并将其放入您的项目中，并通过更改路径修复文件内可能发生的错误，从而获取 flutter web 中支持的任何包导入到：导入'package:flutter_web/material.dart'；并且可能需要进行更多更改。

它将 100% 正常工作，而且非常简单:)

将提供程序包添加到 flutter web 项目时出错

Error when adding provider package to flutter web project

flutter

dart

flutter-web

flutter-provider