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POObjective-C Google Web Albums API - Strange error when trying to upload image
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copied!<p>I'm using the Objective-C version of the API.</p> <p>I've copied the code from the example project almost exactly, but am getting this error every time I try to upload a picture: "failedWithStatus:400 data:Photo data must not be empty.".</p> <p>Here's my code:</p> <pre><code>- (void)uploadToPicasa { // make a new entry for the photo GDataEntryPhoto *newEntry = [GDataEntryPhoto photoEntry]; // set a title, description, and timestamp [newEntry setTitleWithString:@"Title!"]; [newEntry setPhotoDescriptionWithString:@"Description!"]; [newEntry setTimestamp:[GDataPhotoTimestamp timestampWithDate: [NSDate date]]]; // attach the NSData and set the MIME type for the photo UIImage *earth_image = [UIImage imageNamed:@"earth.jpg"]; NSData *earth_data = UIImageJPEGRepresentation(earth_image, 1.0); [newEntry setPhotoData:earth_data]; NSString *mimeType = @"image/jpeg"; [newEntry setPhotoMIMEType:mimeType]; // the slug is just the upload file's filename [newEntry setUploadSlug:@"earth.jpg"]; // make service tickets call back into our upload progress selector GDataServiceGooglePhotos *service = [self googlePhotosService]; SEL progressSel = @selector(ticket:hasDeliveredByteCount:ofTotalByteCount:); [service setServiceUploadProgressSelector:progressSel]; // Get URL for Picasa NSURL *uploadURL = [GDataServiceGooglePhotos photoFeedURLForUserID:@"CORRECT_USERNAME" albumID:nil albumName:nil photoID:nil kind:nil access:nil]; // insert the entry into the album feed GDataServiceTicket *ticket; ticket = [service fetchEntryByInsertingEntry:newEntry forFeedURL:uploadURL delegate:self didFinishSelector:@selector(addPhotoTicket:finishedWithEntry:error:)]; // no need for future tickets to monitor progress [service setServiceUploadProgressSelector:nil]; } // progress callback - (void)ticket:(GDataServiceTicket *)ticket hasDeliveredByteCount:(unsigned long long)numberOfBytesRead ofTotalByteCount:(unsigned long long)dataLength { NSLog([NSString stringWithFormat:@"%d", numberOfBytesRead / dataLength]); } // photo add callback - (void)addPhotoTicket:(GDataServiceTicket *)ticket finishedWithEntry:(GDataEntryPhoto *)photoEntry error:(NSError *)error { if (error == nil) { NSLog(@"SHOULD BE UPLOADED MAYBE"); } else { NSLog(@"THERE WAS AN ERROR"); } } - (GDataServiceGooglePhotos *)googlePhotosService { static GDataServiceGooglePhotos* service = nil; if (!service) { service = [[GDataServiceGooglePhotos alloc] init]; [service setShouldCacheResponseData:YES]; [service setServiceShouldFollowNextLinks:YES]; } // update the username/password each time the service is requested NSString *username = @"CORRECT_USERNAME"; NSString *password = @"CORRECT_PASSWORD"; if ([username length] && [password length]) { [service setUserCredentialsWithUsername:username password:password]; } else { [service setUserCredentialsWithUsername:nil password:nil]; } return service; } </code></pre> <p>I used a breakpoint to confirm that NSData is not nil, and is the image in question, so I'm not sure what "failedWithStatus:400 data:Photo data must not be empty." could mean. Please help!</p>

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