架构arm64错误的未定义符号是什么？ iOS Xcode

Question

I have a peculiar error when i try speech recognition framework in objective c

Undefined symbols for architecture arm64 :

"_OBJC_CLASS_$_SFSpeechAudioBufferRecognitionRequest", referenced from:
      objc-class-ref in test.o   "_OBJC_CLASS_$_SFSpeechRecognizer", referenced from:
      objc-class-ref in test.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

You need to add necessary framework to your project. Check all third party party framework and search its required framework for support. For eg if you add google analytic then you need to add CoreData , Foundation etc framework. There is some framework is missing for which third party framework needs.

Or you can-

1. Press "Cmd+Shift+K" to clean up, and quit Xcode.

2. Delete the cache Run "rm -rf ~/Library/Developer/Xcode/DerivedData" in terminal

3. Open the project and re-build it

Hope this will solve your problem.

Answer 2

转到构建阶段->将二进制文件与库链接，然后添加speech.framework。