今天添加了一个新类(包括m,h,xib文件),还没有调用,-编译遇到如下错误,根据错误提示, duplicate symbol param1 in: /Users/xxxx/Library/Developer/Xcode/DerivedData/xxxx-ccqyiywbeowkgmaitropkiovpeou/Build/Intermediates/xxxx.build/Debug-iphonesimulator/xxxx.build/Objects-normal/x86_64/ClassA.…