重载了这个插件就无法启动了

Question

按照课程，我添加了shared_preferences这个插件，然后flutter run重新编译的时候就报错了。好像是什么东西超时，无法下载。

https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/3.16.0/FlutterMacOS.podspec.json
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/1.12.1303/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/1.17.0/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/1.22.4/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/1.9.102/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/2.0.0/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/2.10.2/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/2.2.2/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/2.5/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/3.0.0/FlutterMacOS.podspec.json Response:
      Timeout was reached, retries: 4
      CDN: trunk URL couldn't be downloaded: https://cdn.jsdelivr.net/cocoa/Specs/4/2/c/FlutterMacOS/3.13.0/FlutterMacOS.podspec.json Response:

Answer 1

CrazyCodeBoy 2024-11-13 22:33:34

这个问题通常是因为网络连接问题导致无法从 CDN 下载 FlutterMacOS 的依赖。以下是一些解决方法，您可以尝试来解决此问题：

解决方法

1. 使用代理

如果您可以访问代理服务器或 VPN，可以尝试使用它来提升网络连接速度，避免请求超时。

2. 修改 CocoaPods 源

您可以将 CocoaPods 的源从 cdn.jsdelivr.net 切换到 https://gems.ruby-china.com/，这是国内的镜像源，通常会更快一些。

在终端中执行以下命令：

pod repo remove trunk
pod repo add trunk https://gems.ruby-china.com/

然后再次尝试运行：

flutter clean
flutter pub get
flutter run

3. 使用 pod install 并禁用 CDN

可以在项目的 ios 文件夹中手动运行 pod install 并禁用 CDN 使用，从而直接从 CocoaPods 的源拉取依赖。

执行以下命令：

cd ios
pod install --repo-update

4. 更新 Flutter 和 CocoaPods

确保您使用的是最新版本的 Flutter 和 CocoaPods，因为新版本可能会修复一些网络超时问题。

升级 Flutter：

flutter upgrade

升级 CocoaPods：

sudo gem install cocoapods

5. 检查网络连接

如果您在公司网络环境中运行，可能存在防火墙限制，导致请求被阻断。您可以尝试切换到其他网络，比如家庭网络或移动热点，再次运行命令。

6. 使用 flutter pub get 后重试

如果您的问题出现在 flutter run 的时候，可以尝试先运行：

flutter pub get
flutter clean
flutter run

以上方法中，国内用户通常可以通过设置镜像源来解决此类超时问题。试试这些方法，看看是否能解决您的问题。

• 提问者 前世定今生 #1

  按照你的命令修改国内镜像会报这个异常
  [!] Repo name `trunk` is reserved for CocoaPods' main spec repo accessed via CDN.
  
  查了一下，好像新版本默认这个trunk使用的几是官方的cdn

• 提问者 前世定今生 #2

  老师，我网上找了别的办法，如果有其他同学遇到可以参照我这个方法，在ios下Podfile文件（没有则pod init生成）下，第一行增加了一个镜像
  source 'https://mirrors.tuna.tsinghua.edu.cn/git/CocoaPods/Specs.git'
  
  然后就可以了。之前那个报错的问题也莫名其妙的就好了。

• CrazyCodeBoy 回复 提问者 前世定今生 #3

  嗯，应该还是镜像的问题