从Xcode得到一个奇怪的问题，没有代码问题，我不知道如何处理这个问题。我也使用谷歌并看到类似的问题，但答案对我没用。
duplicate symbol _OBJC_IVAR_$_Level._name in:
..../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build /Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C98F33E28EFA5297.o
/Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C635B4AD47A32079.o
duplicate symbol _OBJC_IVAR_$_Level._type in:
...../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C98F33E28EFA5297.o
...../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C635B4AD47A32079.o
duplicate symbol _OBJC_IVAR_$_Level._binaryImage in:
...../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C98F33E28EFA5297.o
..../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C635B4AD47A32079.o
duplicate symbol _OBJC_CLASS_$_Level in:
..../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C98F33E28EFA5297.o
... ../Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C635B4AD47A32079.o
duplicate symbol _OBJC_METACLASS_$_Level in:
...Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C98F33E28EFA5297.o
......Library/Developer/Xcode/DerivedData/MobileMaps-bfaaljugbcgusoazfkvdbpbdyiqf/Build/Intermediates/MobileMaps.build/Debug-iphonesimulator/MobileMaps.build/Objects-normal/i386/Level-C635B4AD47A32079.o
ld: 5 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
答案 0 :(得分：1)
从我所看到的，这个问题有很多不同的原因，因此许多不同的解决方案，但也许有人会像我一样做愚蠢的事情，这将有助于他们。我很确定这不是OP遇到的问题，因为我的重复符号是以不同名称的.o文件。
在输入#import语句时，基本上要非常小心自动更正。我不小心导入了.m文件而不是正确的.h文件，结果输出类似于OP发布的内容。
希望这有助于某人！