颤动 - SWIFT_VERSION必须设置为支持的值

Question

尝试了库simple_permission,修复了pod错误,这就出现了,不知道如何继续.在Build Settings中没有为swift版本设置,我尝试添加它,但它没有用.

Launching lib/main.dart on iPhone X in debug mode...
Skipping compilation. Fingerprint match.
Running Xcode clean...
Starting Xcode build...
Xcode build done.
Failed to build iOS app
Error output from Xcode build:
?
** BUILD FAILED **

Xcode's output:
?
=== BUILD TARGET simple_permissions OF PROJECT Pods WITH CONFIGURATION             Debug ===
    The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported value for targets which use Swift. This setting can be set in the build settings editor.
Could not build the application for the simulator.
Error launching application on iPhone X.

Answer 1

检查这个答案.

当使用Swift对插件的iOS部分进行编码时,您必须对您的内容进行更改ios/Podfile.你必须添加use_frameworks!和config.build_settings['SWIFT_VERSION'] = '4.1'.

target 'Runner' do
  use_frameworks!  # required by simple_permission
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.1'  # required by simple_permission
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

您可以检查哪个SWIFT_VERSION是必需的,在该问题中,使用3.2解决问题.在我发布的答案中,4.1被推荐但4.0也有效.

Answer 2

通过在项目中创建一个空的 swift 文件来修复。

Answer 3

看看这个问题： https://github.com/flutter/flutter/issues/16049

它帮助我在没有添加快速功能然后添加地理定位插件的情况下创建的项目克服了这个问题。