I have two projects which both use JSQMessagesViewController, however in one of them I am getting the error: "Could not build Objective-C module 'JSQMessagesViewController'", whereas the other one works fine...There is virtually no difference between the two projects, how do I get JSQMessagesViewController to work because it is essential to my application. Thanks.
I fixed the problem by going through the following steps:
- Clean the project, including the build cache (Command-Option-Shift-K)
- Removing the pod.lock file and the pods.xcodeproj files
- And then closing Xcode and running pod update again
- Then building again.
try to install the latest version of JSQMessagesViewController which is on develop right now through (pod 'JSQMessagesViewController', :git => 'https://github.com/jessesquires/JSQMessagesViewController.git', :branch => 'develop') it worked for me ..
来源：https://stackoverflow.com/questions/38076495/could-not-build-objective-c-module-jsqmessagesviewcontroller