Alamofire compiled with older version of Swift language (2.0) than previous files (3.0) for architecture x86_64

Question

When I move my program to the XCode8, I got this error: Alamofire compiled with older version of Swift language (2.0) than previous files (3.0) for architecture x86_64. I have update Alamofire to version 4.0, and set the Use Legacy Swift Language Version to NO. What's the matter?

Answer 1

Update your cocoa pods and clear your derive data folder and try to run again.

In xcode 8 derived data folder changed,

Go to File -> Workspace setting -> then see this image,

Click on -> on path and clear that derived data folder.

Answer 2

Uninstall pods and install it again. Use below commands to install the pods in app

1) pod repo update (make sure you are at root folder)

2) sudo gem install cocoapods --pre (make sure you are at root folder)

3) move to your application folder and run following command:

pod init

4) pod install

Remove derived data folder, clean the app and run it.

Answer 3

If you are using Carthage, try run:

carthage update --no-use-binaries