移动后端入门 - iOS客户端（App Engine） [英] Mobile Backend Starter - iOS client (App Engine)

问题描述

从谷歌的Mobile Backend Starter编译iOS Client时，有人得到下面的错误？
的Xcode 5.02，iPhone的iOS 7

 重复符号_kCloudBackendClientID在：
 /用户/保罗/库/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o 
 /用户/保罗/库/开发/的Xcode /DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o 
重复符号_kCloudBackendClientSecret in：
 / Users / paolo / Library / Developer / Xcode / DerivedData / CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym / Build / Intermediates / CloudBackendIOSClient.build / Debug-iphoneos / CloudBackendIOSClient.build / Objects-normal / armv7 / MessagesTableViewController.o 
 / Users / paolo / Library / Developer /的xcode / DerivedData / CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym / B uild /中间体/ CloudBackendIOSClient.build /调试-的iPhoneOS / CloudBackendIOSClient.build /目标正常/ ARMv7的/ Constants.o 
重复的符号_kCloudBackendChainName在：
 /用户/保罗/库/开发商/ Xcode中/ DerivedData /CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o 
 / Users / paolo / Library / Developer / Xcode / DerivedData / CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym /Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o 
重复的符号_kCloudBackendServiceURL在：
 /用户/保罗/库/开发商/ Xcode中/ DerivedData / CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym /编译/中间体/ CloudBackendIOSClient.build /调试-的iPhoneOS / CloudBackendIOSClient.build /目标正常/ ARMv7的/ MessagesTableViewController.o 
 /用户/保罗/库/开发/ X代码/ DerivedData / CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym / Build / Intermediates / CloudBackendIOSClient.build / Debug-iphoneos / CloudBackendIOSClient.build / Objects-normal / armv7 / Constants.o 
 ld：7个符号，用于架构armv7 
铛：error：linker command failed with exit code 1（use -v to see invocation）
  

解决方案

在文件MessagesTableViewController.m中，

更改：

  #importConstants.m
  

到：

  #importConstants.h
  

anyone got the error below when compiling the "iOS Client" from google "Mobile Backend Starter"? Xcode 5.02, iPhone iOS 7.

duplicate symbol _kCloudBackendClientID in:
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o
duplicate symbol _kCloudBackendClientSecret in:
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o
duplicate symbol _kCloudBackendChainName in:
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o
duplicate symbol _kCloudBackendServiceURL in:
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/MessagesTableViewController.o
    /Users/paolo/Library/Developer/Xcode/DerivedData/CloudBackendIOSClient-gjhkqbarudkpudeeytxgowaihtym/Build/Intermediates/CloudBackendIOSClient.build/Debug-iphoneos/CloudBackendIOSClient.build/Objects-normal/armv7/Constants.o
ld: 7 duplicate symbols for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

解决方案

In file MessagesTableViewController.m

Change:

#import "Constants.m"

to:

#import "Constants.h"

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