GDataServiceGooglePicasaWeb* service =
 [[GDataServiceGooglePicasaWeb alloc] init];

[service setUserCredentialsWithUsername:@"my.account@gmail.com"
 password:@"mypasswd"];

// get the URL for the album
NSURL *albumURL = [GDataServiceGooglePicasaWeb
 picasaWebFeedURLForUserID:@"my.account" albumID:nil
 albumName:@"MyBestPhotos" photoID:nil kind:nil access:nil];

// set a title and description for the new photo
GDataTextConstruct *title, *desc;
title = [GDataTextConstruct textConstructWithString:@"Sunset Photo"];
desc = [GDataTextConstruct textConstructWithString:@"A nice day"];

GDataEntryPhoto *newPhoto = [GDataEntryPhoto photoEntry];
[newPhoto setTitle:title];
[newPhoto setPhotoDescription:desc];

// attach the photo data
NSData *data = [NSData dataWithContentsOfFile:@"/SunsetPhoto.jpg"];
[newPhoto setPhotoData:data];
[newPhoto setPhotoMIMEType:@"image/jpeg"];

// now upload it
GDataServiceTicket *ticket;
ticket = [service fetchPicasaWebEntryByInsertingEntry:newPhoto
 forFeedURL:albumURL
 delegate:self
 didFinishSelector:@selector(addPhotoTicket:finishedWithEntry:)
 didFailSelector:@selector(addPhotoTicket:failedWithError:)];