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.

[adamhongmy]

I'm using ResponseDetective (1.2.0) in xcode 9.0.1 using Objective C. Xcode even gave me "Use of undeclared identifier 'RDTResponseDetective'".

[akashivskyy]

Did you try doing what the error suggests to do? :)

[adamhongmy]

Hi, sorry for late reply. I thought the setting it mentioned is the framework. I will try tomorrow.

[adamhongmy]

I had configure it and it works. Thanks for your patience. Cheers

[adamhongmy]

Hello, can you set the swift language version on your end? It is getting tedious to reset it every time.

[akashivskyy]

Hi @adamhongmy, I'm not sure what you mean. Swift Version build setting is set up here.

[adamhongmy]

Weird, everytime I run pod install in the terminal, I always get this error in xcode and I have to manually reconfigure it.

[adamhongmy]

As an alternative, I use Carthage instead. It doesn't seem to be having the error.

[akashivskyy]

What's your version of CocoaPods?

[adamhongmy]

Allo, sorry for the delay. My version is 1.3.1

[akashivskyy]

Okay, last question: is the error thrown for ResponseDetective target in Pods.xcodeproj or for your own app target?

[adamhongmy]

It is from Pods.xcodeproj.

[akashivskyy]

I can't reproduce this error – I created a brand new project in Xcode 9.2, added ResponseDetective as CocoaPods dependency, installed it and built the project successfully. Please make sure you're not modifying any targets auto-created by CocoaPods and use a compatible version of ResponseDetective.

I'm closing the issue for now. If you still believe that the error lies on the side of ResponseDetective, please open a new issue and provide more information, such as a sample project with failing configuration.