duplicate symbol _OBJC_IVAR_$_CDataScanner.data ......... for architecture i386此错误解决方法

文件一直运行不了，还报错：duplicate symbol _OBJC_IVAR_$_CDataScanner.data   ......... for architecture i386

如图：

 


 

 

 

 

ld: duplicate symbol_OBJC_IVAR_$_CDataScanner.data in/Users/apple/Library/Developer/Xcode/DerivedData/ClothesTry-aikecqhjtelboafozutskstpysag/Build/Intermediates/ClothesTry.build/Debug-iphonesimulator/ClothesTry.build/Objects-normal/i386/CDataScanner-B4B7702B3EA4AD5A.oand/Users/apple/Library/Developer/Xcode/DerivedData/ClothesTry-aikecqhjtelboafozutskstpysag/Build/Intermediates/ClothesTry.build/Debug-iphonesimulator/ClothesTry.build/Objects-normal/i386/CDataScanner-E9BE2B102ABA04A.ofor
architecture i386

collect2: ld returned 1 exit status

Command/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-gcc-4.2failed with exit code 1

 

 

 

最后解决办法：

如图：



因为文件夹“Source”在工程里重复了，导致报错以上的错误。只要将其中一个文件夹删去就行了。