Facebook Connect on iOS - Picture doesn't display with wall post

Question

I've set up Facebook connect with my app using the demo project provided by Facebook. Everything works great, except for the last little step...

• First of all, I login and get permissions.

• Next, I upload a picture. This works great, I can see the picture in my Facebook album like I should be able to.

• When this picture is uploaded, I get it's URL (returned by the FBRequest delegate). Copy pasting this URL into a web browser takes me directly to the image, so I know that this URL is correct.

Here's where the problem is:

• I now want to present this picture alongside a wall post. The wall post is fine, but the picture just doesn't seem to attach and the status is left as a plain text message.

Here's the code I'm using for the last part:

- (void)request:(FBRequest *)request didLoad:(id)result {

    NSString* picUrl = [result objectForKey:@"src_big"];  //this definitely returns the right URL

    if (picUrl)
    {
        NSString *message = @"Test status";
        NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                       message, @"message", picUrl, @"picture", @"Look at my photo", @"name", nil];

        [facebook requestWithMethodName:@"facebook.Stream.publish" andParams:params
                          andHttpMethod:@"POST" andDelegate:self];
    }
}

Any ideas what I'm missing or doing wrong?

Answer 1

Fixed with the following code (after a lot of failed attempts). Facebook doesn't like the way I was trying it, you've got to do it all in just one step:

NSData *imageData = UIImagePNGRepresentation(image);

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                               @"Test message", @"message", imageData, @"source", nil];

[facebook requestWithGraphPath:@"/me/photos" andParams:params andHttpMethod:@"POST" andDelegate:self];