Question

I’m trying to use Google Drive in my iOS app. It authenticates and browses ok, but when I try to upload a file, I get the following error:

*** Assertion failure in -[GTLService uploadFetcherWithRequest:fetcherService:params:](), /google-api-objectivec-client-read-only/Source/Objects/GTLService.m:565

Here’s my relevant code:

GTLUploadParameters *uploadParameters = [GTLUploadParameters uploadParametersWithData:fileContent MIMEType:@"application/pdf"];

GTLDriveFile *file = [[GTLDriveFile alloc] init];
file.title = @"test.pdf";

GTLQueryDrive *query = [GTLQueryDrive queryForFilesInsertWithObject:file uploadParameters:uploadParameters];

[self.driveService executeQuery:query completionHandler:^(GTLServiceTicket *ticket,
                                                        GTLDriveFile *updatedFile,
                                                        NSError *error) {
  NSLog(@"Done");
}];

Has anyone run into this problem? Obviously I’m missing something somewhere in the setup I guess but I have no idea what.

Answer 1

I browsed through the source and the corresponding line is:

GTL_ASSERT(uploadClass != nil, @"GTMHTTPUploadFetcher needed");

A search for that on stackoverflow led to this answer:

It indicates that the class GTMHTTPUploadFetcher is not linked in to your application.
The class may be missing due to the class file not being linked in the debug or release build target, or due to the preprocessor define GDATA_INCLUDE_YOUTUBE_SERVICE not being set, as described under “Removing Unneeded Code” at http://code.google.com/p/gdata-objectivec-client/wiki/BuildingTheLibrary