duplicate symbols

本文介绍了一种常见的iOS开发中遇到的问题:重复符号错误。该问题通常发生在两个类中定义了相同名称的全局变量,文章提供了修改其中一个变量名作为解决方案。

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duplicate symbol _mCollecatView in:

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/MapViewController.o

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/DangerMapViewController.o

duplicate symbol _dangerInfoView in:

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/MapViewController.o

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/DangerMapViewController.o

duplicate symbol _dangerInfoBtn in:

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/MapViewController.o

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/DangerMapViewController.o

duplicate symbol _pointAnnotation in:

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/MapViewController.o

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/DangerMapViewController.o

duplicate symbol _userLocation in:

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/MapViewController.o

    /Users/Rubert/Library/Developer/Xcode/DerivedData/ChengDuHidengDangerManage-bktvlkdyhtfruecsycmmvjohrqul/Build/Intermediates/ChengDuHidengDangerManage.build/Debug-iphoneos/ChengDuHidengDangerManage.build/Objects-normal/arm64/DangerMapViewController.o

ld: 6 duplicate symbols for architecture arm64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

==============================================

这个问题是由于两个类中有2个相同的全局变量,把一个类中的变量名改下就可以了

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