Flutter包get不会安装新包

Question

我正在尝试在flutter中安装一个包（dynamic_theme）。当我运行flutter packages get -v时，它甚至没有尝试安装包。

到目前为止，我已经尝试过：

• 运行flutter packages get
• 运行flutter packages get
• 重新启动我的电脑
• 更新了扑动
• 添加了另一个包，但没有安装
• 更新了Android Studio

在我的pubspec.yaml中我放了：

dependencies:
  flutter:
    sdk: flutter
  firebase_core:
  cupertino_icons: ^0.1.2
  dynamic_theme: ^1.0.1 # the package does not install
  uuid: 2.0.0 # the package does not install

在flutter packages get详细运行的日志中，它安装了它输出的包：

[ +422 ms] Running "flutter packages get" in quiz_app... (completed in 0.4s)
[  +57 ms] Found plugin firebase_core at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_core-0.3.4\
[  +13 ms] Found plugin shared_preferences at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.2\
[ +141 ms] Found plugin firebase_core at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_core-0.3.4\
[   +6 ms] Found plugin shared_preferences at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.2\
[  +26 ms] "flutter get" took 718ms.

我期望下载并安装软件包，但它只检查已安装的软件包（如firebase_core）的更新。

Answer 1

尝试将^添加到uuid：2.0.0 祝好运

  // The last version is 
uuid: ^2.0.1 

Answer 2

有些东西随机解决了。我没有做任何事，只是多次尝试。经过大约10次尝试后，它下载并安装了id和动态主题。