AFNetworking報錯"_UTTypeCopyPreferredTagWithClass", referenced from: _AFContentTypeForPathExtens,chromeextens

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AFNetworking報錯"_UTTypeCopyPreferredTagWithClass", referenced from: _AFContentTypeForPathExtens,chromeextens

問題: 在和Unity互動的過程中,從Unity開發工具打包出來的專案檔,在添加AFNetworking庫,運行時報出以下錯誤:

Undefined symbols for architecture armv7:

  "_kUTTagClassMIMEType", referenced from:

      -[AFStreamingMultipartFormData appendPartWithFileURL:name:error:] in AFURLRequestSerialization.o

  "_kUTTagClassFilenameExtension", referenced from:

      -[AFStreamingMultipartFormData appendPartWithFileURL:name:error:] in AFURLRequestSerialization.o

  "_UTTypeCreatePreferredIdentifierForTag", referenced from:

      -[AFStreamingMultipartFormData appendPartWithFileURL:name:error:] in AFURLRequestSerialization.o

  "_UTTypeCopyPreferredTagWithClass", referenced from:

      -[AFStreamingMultipartFormData appendPartWithFileURL:name:error:] in AFURLRequestSerialization.o

ld: symbol(s) not found for architecture armv7

clang: error: linker command failed with exit code 1 (use -v to see invocation)

 

 

原因是未添加 MobileCoreServices.framework(此架構定義統一類型標識符 (UTIs)使用的底層類型)

解決:Build Phase ->Link Binary With Libraries()下添加 MobileCoreServices.framework。添加成功後運行程式成功。

 

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