1 duplicate symbol for architecture armv7

duplicate symbol _registerTag in:
    /Users/bear/Library/Developer/Xcode/DerivedData/CarShare-aocjqpzrgbdimnfzsvvibtngyved/Build/Intermediates.noindex/XXXX.build/Debug-iphoneos/XXXX.build/Objects-normal/armv7/XXXXX.o
    /Users/bear/Library/Developer/Xcode/DerivedData/CarShare-aocjqpzrgbdimnfzsvvibtngyved/Build/Intermediates.noindex/XXXX.build/Debug-iphoneos/XXXX.build/Objects-normal/armv7/XXXXX.o
ld: 1 duplicate symbol for architecture armv7

错解决方法：搜索后发现 两个.m 文件中 有 两个重复const 的变量 修改下就可以了