构建应用程序时出现未知错误

Question

Undefined symbols for architecture i386:
  "_Assert", referenced from:
      -[GoogleDocs verifyAccountUsername:password:] in GoogleDocs.o
      -[GoogleDocs beginUploadData:withTitle:inFolder:replaceExisting:] in GoogleDocs.o
      -[GoogleDocs beginDownloadTitle:inFolder:] in GoogleDocs.o
      -[GoogleDocs beginFileRetitleFrom:toTitle:inFolder:] in GoogleDocs.o
      -[GoogleDocs beginFileDeleteTitle:inFolder:keepingNewest:] in GoogleDocs.o
      -[GoogleDocs beginFolderCheck:createIfNeeded:] in GoogleDocs.o
      -[GoogleDocs docListListFetchTicket:finishedWithFeed:] in GoogleDocs.o
      ...
     (maybe you meant: _AssertSelectorNilOrImplementedWithArguments)
  "_DebugLog", referenced from:
      -[GoogleDocs fetchDocListForFeed:title:username:password:] in GoogleDocs.o
      -[GoogleDocs docListListFetchTicket:finishedWithFeed:] in GoogleDocs.o
      -[GoogleDocs inputStream:hasDeliveredByteCount:ofTotalByteCount:] in GoogleDocs.o
      -[GoogleDocs uploadFileTicket:finishedWithEntry:] in GoogleDocs.o
      -[GoogleDocs uploadFileTicket:failedWithError:] in GoogleDocs.o
      -[GoogleDocs downloadEntry:] in GoogleDocs.o
      -[GoogleDocs retitleNextFile] in GoogleDocs.o
      ...
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status

我有一个示例项目用于从iphone sdk上传和下载文本到google doc，示例项目工作正常，但是我将这个项目集成到我的应用程序中我得到了上述错误。我已经将所有框架添加到其中，但没有运气。我在项目中添加了所有课程。任何人都对这个错误有任何想法请帮助我。 关心尼平。

Answer 1

检查您是否正在导入应用中不存在的标头文件。 您的应用无法找到符号。