添加依赖项时，“'Flutter ios”失败

Question

从零开始我..。

1. 在Android中创建新的颤振应用程序
2. 在pubspec.yaml

中添加font_awesome_flutter依赖项

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  font_awesome_flutter: ^8.12.0
  provider: ^5.0.0
  flutter:
    sdk: flutter

1. 在andriod模拟器上运行应用程序，运行良好，但是
2. 在iOS模拟器上运行应用程序，得到以下错误：

Running pod install...
CocoaPods' output:
↳
      CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only perfomed in repo update

Error output from CocoaPods:
↳
    /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:342:in `rescue in load': Couldn't load the Unicode tables for UTF8Handler (No such file or directory @ rb_sysopen - /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/values/unicode_tables.dat), ActiveSupport::Multibyte is unusable (IOError)
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:339:in `load'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:330:in `codepoints'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:152:in `block in decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `each'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `inject'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:278:in `normalize'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:166:in `installation_root'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:226:in `podfile_path'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/user_interface/error_report.rb:105:in `markdown_podfile'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/user_interface/error_report.rb:30:in `report'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:66:in `report_error'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:396:in `handle_exception'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:337:in `rescue in run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:324:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:52:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/bin/pod:55:in `<top (required)>'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `load'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `<main>'
    /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `initialize': No such file or directory @ rb_sysopen - /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/values/unicode_tables.dat (Errno::ENOENT)
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `open'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `load'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:330:in `codepoints'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:152:in `block in decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `each'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `inject'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:278:in `normalize'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:166:in `installation_root'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:226:in `podfile_path'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/user_interface/error_report.rb:105:in `markdown_podfile'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/user_interface/error_report.rb:30:in `report'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:66:in `report_error'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:396:in `handle_exception'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:337:in `rescue in run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:324:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:52:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/bin/pod:55:in `<top (required)>'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `load'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `<main>'
    /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:342:in `rescue in load': Couldn't load the Unicode tables for UTF8Handler (No such file or directory @ rb_sysopen - /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/values/unicode_tables.dat), ActiveSupport::Multibyte is unusable (IOError)
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:339:in `load'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:330:in `codepoints'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:152:in `block in decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `each'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `inject'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:278:in `normalize'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:166:in `installation_root'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:226:in `podfile_path'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:205:in `podfile'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:160:in `verify_podfile_exists!'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command/install.rb:46:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:52:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/bin/pod:55:in `<top (required)>'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `load'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `<main>'
    /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `initialize': No such file or directory @ rb_sysopen - /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/values/unicode_tables.dat (Errno::ENOENT)
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `open'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:340:in `load'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:330:in `codepoints'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:152:in `block in decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `each'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `inject'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:141:in `decompose'
        from /Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.4.5/lib/active_support/multibyte/unicode.rb:278:in `normalize'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:166:in `installation_root'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:226:in `podfile_path'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/config.rb:205:in `podfile'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:160:in `verify_podfile_exists!'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command/install.rb:46:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:52:in `run'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/gems/cocoapods-1.10.1/bin/pod:55:in `<top (required)>'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `load'
        from /usr/local/Cellar/cocoapods/1.10.1/libexec/bin/pod:23:in `<main>'

Error running pod install
Error launching application on iPhone 12 Pro.

尝试运行颤振医生，删除pods文件，在XCode中设置开发团队。什么都没有。

我还在多个项目中对多个依赖项进行了尝试，结果是相同的。出于某种原因，我的dev环境根本不允许我运行XCode项目。当我添加一个依赖项并运行，或者尝试在ios模拟器上运行时，问题总是会出现。我不知道该去哪里看看，也不知道该怎么纠正。我是全新的颤栗和移动的发展。我正在运行iOS Catalina 10.15.7。

Answer 1

我在将颤振1.17.5升级到颤振1.22之后出现了这个问题，你最近升级了颤振SDK吗？对我来说这起作用了。

我从目录中删除了ios/Flutter文件夹，并运行了这些命令，并将部署目标更改为11.0

-> flutter create .
-> flutter pub cache repair
-> cd ios 
-> pod init 
-> pod install 

在遵循这些命令之后，我可以在模拟器上构建iOS并创建归档文件。

为了更安全起见，请备份已删除的文件夹