A dependency may only have one source.

最新推荐文章于 2023-10-30 10:30:56 发布
最新推荐文章于 2023-10-30 10:30:56 发布
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分类专栏： # Flutter 文章标签： Flutter A dependency may only have one
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本文链接：https://blog.youkuaiyun.com/Crazy_SunShine/article/details/80307862
本文介绍了如何解决在pubspec.yaml文件中常见的依赖配置错误，包括依赖源只能有一个及版本约束无法解析的问题，并给出了正确的配置格式。

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具体错误信息如下：

错误一：

Error on line 6, column 5 of pubspec.yaml: A dependency may only have one source.

    sdk: flutter
    ^^^^^^^^^^^^^

pub upgrade failed (65)

错误二：

Error on line 6, column 8 of pubspec.yaml: Invalid version constraint: Could not parse version "flutter". Unknown text at "flutter".

  sdk: flutter
       ^^^^^^^
pub upgrade failed (65)

此时，注意 pubspec.yaml 文件添加依赖的内容，特别注意 sdk 对齐格式。正确格式如下图所示：


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