我在将文件上传到 Google 云端硬盘时遇到问题。我仔细按照说明进行操作，并且能够登录并验证用户身份，但是当我上传文件时，我遇到了以下断言：
*断言失败 -[GTMHTTPUploadFetcher connectionDidFinishLoading:], /Users/.../google-api-objectivec-client-read-only/Source/HTTPFetcher/GTMHTTPUploadFetcher.m:399
我仔细检查并确保 -ObjC -all_load 在其他链接器标志中。
这是我正在使用的代码，它基本上只是 Google 在他们的示例中使用的代码的副本。
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *localPath = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/%@",
localPath,fileNameString];
NSData *myFileData = [NSData dataWithContentsOfFile:filePath];
GTLDriveFile *file = [GTLDriveFile object];
file.title = fileNameString;
file.descriptionProperty = fileNameString;
file.mimeType = @"application/pdf";
GTLUploadParameters *uploadParameters = [GTLUploadParameters
uploadParametersWithData:myFileData
MIMEType:@"application/pdf"];
GTLQueryDrive *query = [GTLQueryDrive queryForFilesInsertWithObject:file
uploadParameters:uploadParameters];
[self.driveService executeQuery:query
completionHandler:^(GTLServiceTicket *ticket,
GTLDriveFile *updatedFile,
NSError *error) {
if (error == nil) {
NSLog(@"file uploaded");
} else {
NSLog(@"upload failed");
}
}];
以下是断言发生时突出显示的代码：
// The initial response of the resumable upload protocol should have an
// empty body
//
// This assert typically happens because the upload create/edit link URL was
// not supplied with the request, and the server is thus expecting a non-
// resumable request/response.
NSAssert([[self downloadedData] length] == 0,
@"unexpected response data (uploading to the wrong URL?)");
有谁知道他们指的是什么网址？我还没有看到用于在任何地方上传新文件的 URL。