Could not build Objective-C module 'JSQMessagesViewController'
问题 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. 回答1: I fixed the problem by going through the following steps: Clean the project, including the build cache (Command-Option-Shift