相关疑难解决方法(0)

我试图在Xcode中自动创建NSManagedObject子类(2个相关实体).它们是这样生成的:

但是,在我做任何进一步操作之前,当我尝试构建并运行它时,会发生链接错误,如下所示:

duplicate symbol _OBJC_CLASS_$_Photo in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photo+CoreDataClass.o duplicate symbol _OBJC_METACLASS_$_Photo in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photo+CoreDataClass.o duplicate symbol _OBJC_CLASS_$_Photography in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photography+CoreDataClass.o duplicate symbol _OBJC_METACLASS_$_Photography in: /Users/Kefeng/Library/Developer/Xcode/DerivedData/Photomania-aellrakjngugnzcgrleiytvrfvyt/Build/Intermediates/Photomania.build/Debug-iphonesimulator/Photomania.build/Objects-normal/x86_64/Photography+CoreDataClass.o ld: 4 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

我曾多次尝试创建新项目并做同样的事情.我的初衷是将一些自定义方法添加到子类中.但是当我添加任何东西时,例如Photo+CoreData.h/m,出现与上面相同的错误.

我找到了一些关于"双重包含"或"将文件保存到错误的目录"的答案,但我没有这样做.有人对此有任何想法吗？

奇怪的是,我似乎无法让Archive在XCode中工作,但如果我不尝试存档而只是构建一个发行版本,那么构建成功而没有重复符号的错误.该项目也适用于设备.

我已经搜索过这个主题并尝试禁用可测试性,并将项目设置中的"No Common Blocks"设置为NO,但到目前为止还没有运气.

该项目是一个基于React Native 0.40的项目,同时安装了CocoaPods.PodFile就是这样

# You Podfile should look similar to this file. React Native currently does not support use_frameworks!
source 'https://github.com/CocoaPods/Specs.git'

platform :ios, '8.0'

# Change 'AirMapsExplorer' to match the target in your Xcode project.
target 'StreetSmart' do
  pod 'React', path: '../node_modules/react-native', :subspecs => [
    'Core',
    'RCTActionSheet',
    'RCTAnimation',
    'RCTGeolocation',
    'RCTImage',
    'RCTLinkingIOS',
    'RCTNetwork',
    'RCTSettings',
    'RCTText',
    'RCTVibration',
    'RCTWebSocket'
  ]

  pod 'GoogleMaps'  # <~~ remove this line if you do not want to support GoogleMaps on iOS

# when …

我发现我的项目设置了

GCC_NO_COMMON_BLOCKS = NO 

在Apple LLVM编译器3.1 - 代码生成设置下,为"无公共块"

我想知道:那个国旗用的是什么？

非常感谢

我正在打开.xcworkspace我的Ionic 3项目并尝试在我的设备上运行它,但我突然在Xcode中收到以下错误:

Ld /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/MyApp.app/MyApp normal arm64
    cd /Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios
    export IPHONEOS_DEPLOYMENT_TARGET=9.0
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk -L/Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos -L/Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios/MyApp/Plugins/cordova-plugin-google-analytics -F/Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos -F/Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios/Pods/OneSignal/iOS_SDK/OneSignalSDK/Framework -FMyApp/Plugins/com.googlemaps.ios -filelist /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/MyApp.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -miphoneos-version-min=9.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/MyApp_lto.o -Xlinker -no_deduplicate -fobjc-arc -fobjc-link-runtime -ObjC -ObjC -framework OneSignal -framework SystemConfiguration -framework UIKit -framework UserNotifications /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/libCordova.a -framework Accelerate -framework CoreData -framework CoreLocation -framework CoreText -framework GLKit -framework ImageIO -lc++ -lz -framework OpenGLES -framework QuartzCore -framework SystemConfiguration -framework UIKit -framework GoogleMapsBase -framework GoogleMaps -framework GoogleMapsCore -framework …

我已经从 codecanyon 下载了一个应用程序模板。

当我在模拟器上运行时，它运行良好。但是当我尝试在真实设备或 iOS 通用设备上构建时，它失败并显示以下错误：

> duplicate symbol l123 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFAppLinkReturnToRefererView.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFTask.o)
>     duplicate symbol l028 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFTaskCompletionSource.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFMeasurementEvent.o)
>     duplicate symbol l029 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFTaskCompletionSource.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFExecutor.o)
>     duplicate symbol l152 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFWebViewAppLinkResolver.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/GoogleSignIn.framework/GoogleSignIn(GIDAuthentication.o)
>     duplicate symbol l153 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFWebViewAppLinkResolver.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/GoogleSignIn.framework/GoogleSignIn(GIDAuthentication.o)
>     duplicate symbol l154 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFWebViewAppLinkResolver.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/GoogleSignIn.framework/GoogleSignIn(GIDAuthentication.o)
>     duplicate symbol l155 in:
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/Bolts.framework/Bolts(BFWebViewAppLinkResolver.o)
>         /Users/sagar/Downloads/123/FoodDelivery/FoodDelivery/Resources/Frameworks/GoogleSignIn.framework/GoogleSignIn(GIDAuthentication.o)
>     .....

ld：架构 arm64 clang 的 91 个重复符号：错误：链接器命令失败，退出代码为 1（使用 -v 查看调用） …

我有一个BConstants.h文件,我把我的项目的所有常量.该文件如下:

#ifndef asdf_BConstants_h
#define asdf_BConstants_h

typedef NS_ENUM(NSUInteger, BTheme) {
    kField
};

typedef NS_ENUM(NSUInteger, BItem) {
    kBox
};

typedef NS_ENUM(NSUInteger, BMovementState) {
    kTouchUp,
    kTouchDown
};

#endif

当我将以下三行添加到此文件时,我会在将文件#import编辑到另一个.m文件时收到后续错误

...

NSString * const kHero = @"Hero";
NSString * const kCount = @"Count";

#endif

错误:

duplicate symbol _kHero in:
...list of .o files
duplicate symbol kCount in:
...list of .o files
2 duplicate symbols for architecture arm64

我已经查看过已经发布的问题,我说我compile sources的应用程序中可能有重复的文件target,但是我检查过,我发现没有重复的文件.这个问题还来自哪里,是否在BConstants.h文件中包含了这两个NSString常量？