FBConnect facebook.stream.publish with NSDictionary problems

Question

I have this code that can\'t send a Facebook request until now.

NSDictionary *firstDict = [NSDictionary dictionaryWithObjectsAndKeys:
    @\"image\", @\"Type\",         


        

Answer 1

If you're using latest iOS SDK For Facebook then using the below method you can publish image as a stream.

- (IBAction) publishStream: (id)sender {

  SBJSON *jsonWriter = [[SBJSON new] autorelease];

  NSDictionary* actionLinks = [NSArray arrayWithObjects:[NSDictionary dictionaryWithObjectsAndKeys:
                               @"Always Running",@"text",@"http://thinkdiff.net",@"href", nil], nil];

  NSString *actionLinksStr = [jsonWriter stringWithObject:actionLinks];
  NSDictionary* imageShare = [NSDictionary dictionaryWithObjectsAndKeys:
                                @"image", @"type",
                                @"http://thinkdiff.net/mahmud_small.jpg", @"src",
                                @"http://thinkdiff.net", @"href",
                                nil];

  NSDictionary* attachment = [NSDictionary dictionaryWithObjectsAndKeys:
                               @"a long run", @"name",
                               @"The Facebook Running app", @"caption",
                               @"it is fun", @"description",
                               @"http://itsti.me/", @"href",
                               [NSArray arrayWithObjects:imageShare, nil ], @"media",
                              nil];
  NSString *attachmentStr = [jsonWriter stringWithObject:attachment];
    NSLog(attachmentStr);
  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];
}

The image part should be another NSDictionary object.

NSDictionary* imageShare = [NSDictionary dictionaryWithObjectsAndKeys:
                                @"image", @"type",
                                @"http://thinkdiff.net/mahmud_small.jpg", @"src",
                                @"http://thinkdiff.net", @"href",
                                nil];

And in the attachment NSDictionary object must include imageShare object as array

[NSArray arrayWithObjects:imageShare, nil ]

This is because if you not include this as an array, Json parser avoid [] brackets as a result the publish functionality will not work. Remember the string needs to be a valid JSON string otherwise facebook api will not publish.

Answer 2

dataUsingEncoding: is a NSString method, so presumably, some object is expecting an instance of NSString where you passed an array. I presume that FBRequest cannot deal with the array you included in the attachment dictionary.

Answer 3

I couldn't find a way to send the dictionary with an array but there's another class that works for me:

FBStreamDialog

Which brings up a dialog before it sends the information and it's delegate methods lets you know about changes.

Answer 4

I modified your example a little and it works. Here's the working code:

NSString *att = @"{\"name\":\"i\'m bursting with joy\",\"caption\": \"User rated the lolcat 5 stars\", \"description\": \"a funny looking cat\"}";
NSDictionary *attachment = [NSDictionary dictionaryWithObject:att forKey:@"attachment"];
[[FBRequest requestWithDelegate:self] call:@"facebook.stream.publish" params:attachment];