для публикации изображения используйте следующий код (извлечено из демонстрационного приложения
- (IBAction) publishStream: (id)sender {
SBJSON *jsonWriter = [[SBJSON new] autorelease];
NSDictionary* actionLinks = [NSArray arrayWithObjects:[NSDictionary dictionaryWithObjectsAndKeys:
@"Always Running",@"text",@"http://itsti.me/",@"href", nil], nil];
NSString *actionLinksStr = [jsonWriter stringWithObject:actionLinks];
NSDictionary* attachment = [NSDictionary dictionaryWithObjectsAndKeys:
@"a long run", @"name",
@"The Facebook Running app", @"caption",
@"it is fun", @"description",
@"http://itsti.me/", @"href",
[NSArray arrayWithObjects:
[NSDictionary dictionaryWithObjectsAndKeys:
@"image", @"type",
@"http://www.gogle.com/", @"href",
@"http://a1.twimg.com/profile_images/457512510/iconoTwitter_bigger.gif", @"src",nil]
, nil ]
,@"media", nil];
NSString *attachmentStr = [jsonWriter stringWithObject:attachment];
NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
kAppId, @"api_key",
@"Share on Facebook", @"user_message_prompt",
actionLinksStr, @"action_links",
attachmentStr, @"attachment",
nil];
[_facebook dialog: @"stream.publish"
andParams: params
andDelegate:self];
}