如何将 swift 2.3 项目更新到最新的 swift 4

Question

I am having too many cocoapods installed. It shows too many compile time errors. How to solve this? I am new to swift so looking for help. Thanks

Answer 1

• Choose auto upgrade after opening the project in Xcode 9.

• In Podfile refer to the framework built in swift 4. Add below script in your Podfile and do a pod install, which will set the swift version of all pod targets to 4.

  post_install do |installer|

   installer.pods_project.targets.each do |target| target.build_configurations.each do |config| config.build_settings['SWIFT_VERSION'] = '4' end end

  end

Hope this helps in proceeding in upgrading the application to swift4