Xcode 命令/Developer/Platforms失败，退出代码为1
ld:duplicate symbol_OBJC_METACLASS_$\u ipadcategoritytableviewcontroller in/Users/cilat/Library/Developer/Xcode/DerivedData/CommonChineseCharacters cstedjbqaisoopbqvizbwrsniyda/Build/Intermediates/CommonChineseCharacters.Build/Objects normal/i386/ipadcategoritytableviewcontroller.o和/Users/cilat/Library/Developer/Xcode/DerivedData/CommonChineseCharacters cstedjbqaisoopbqvizbwrsniyda/Build/Intermediates/CommonChineseCharacters.Build/Debug iphonesimulator/CommonChineseCharacters.Build/Objects normal/i386/CategoryTableViewController.o用于体系结构i386Xcode 命令/Developer/Platforms失败，退出代码为1,xcode,Xcode,ld:duplicate symbol_OBJC_METACLASS_$\u ipadcategoritytableviewcontroller in/Users/cilat/Library/Developer/Xcode/DerivedData/CommonChineseCharacters cstedjbqaisoopbqvizbwrsniyda/Build/Intermediates/CommonChineseCharacters.Build/Objects normal/i386/ipa
命令/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-gcc-4.2失败，退出代码为1。很可能您在项目中两次包含了一个引用文件 请在下面重新检查您的文件
项目->构建阶段->编译源代码那么，问题是什么？