Flutter软件包失败 [英] Flutter Packages Get Failed

问题描述

我正在尝试将此库添加到我的flutter项目中： https：/ /pub.dartlang.org/packages/charts_flutter#-installing-tab-

I am trying to add this library to my flutter project: https://pub.dartlang.org/packages/charts_flutter#-installing-tab-

当我将依赖项添加到pubspec.yaml文件中并命中软件包时，出现以下错误：

When I add the dependency to my pubspec.yaml file and hit packages get, I get the following error:

当前Dart SDK版本为2.1.0-dev.9.4.flutter-f9ebf21297。

The current Dart SDK version is 2.1.0-dev.9.4.flutter-f9ebf21297.

因为Charts_flutter> = 0.6.0取决于Charts_common> = 0.6.0，其中
需要SDK版本> = 2.1.0< 3.0.0，charts_flutter> = 0.6 .0被禁止
。因此，因为undaunted_golf_flutter取决于
Charts_flutter ^ 0.6.0，所以版本解析失败。

Because charts_flutter >=0.6.0 depends on charts_common >=0.6.0 which requires SDK version >=2.1.0 <3.0.0, charts_flutter >=0.6.0 is forbidden. So, because undaunted_golf_flutter depends on charts_flutter ^0.6.0, version solving failed.

pub失败（1）退出代码为1

pub get failed (1) Process finished with exit code 1

在我看来，我拥有Dart的最新版本，与chart_common库所需的最低版本匹配。我昨天（2/15/2019）更新了我的Android Studio，同一天更新了chart_flutter和Charts_common。

To me, it looks like I have the most up to date version of Dart, which matches the minimum version the chart_common library requires. I updated my Android Studio yesterday (2/15/2019), the same day the charts_flutter and charts_common were updated.

我在这里缺少什么？

推荐答案

当前Dart SDK版本为2.1.0-dev.9.4.flutter-f9ebf21297。

The current Dart SDK version is 2.1.0-dev.9.4.flutter-f9ebf21297.

... charts_flutter ...需要SDK版本> = 2.1.0< 3.0.0

... charts_flutter ... requires SDK version >=2.1.0 <3.0.0

来更新您的Flutter安装。

This means you need to update your Flutter installation.

flutter升级，或者如果升级后的Flutter版本不够，

Either flutter upgrade or if that doesn't result in a new enough Flutter version,

使用

flutter channel dev
flutter doctor

或者使用比> = 0.6.0 charts_flutter 版本不依赖< = 2.1.0-dev

or alternatively use an older charts_flutter version than >=0.6.0 that does not depend on <= 2.1.0-dev

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