Uploading photo with caption or status to Facebook on iPhone app

Question

I managed to implement Facebook connect on my iPhone app and allow the user to upload a status update via the app. I now want to include a feature to allow uploading of phot

Answer 1

This following snippet is taken from the facebook-ios-sdk. Assuming your class already has a facebook object, this method will upload a photo from a URL (change as needed):

-(IBAction) uploadPhoto: (id)sender {
  NSString *path = @"http://www.facebook.com/images/devsite/iphone_connect_btn.jpg";
  NSURL *url = [NSURL URLWithString:path];
  NSData *data = [NSData dataWithContentsOfURL:url];
  UIImage *img = [[UIImage alloc] initWithData:data];

  NSMutableDictionary * params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                  img, @"picture",
                                  nil];
  [facebook requestWithMethodName: @"photos.upload"
                         andParams: params
                     andHttpMethod: @"POST"
                       andDelegate: self];
  [img release];
}

In order to send a caption with the photo you must add the "message" parameter key followed by the caption text. Changing params like below should achieve this:

NSMutableDictionary * params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                img, @"picture", 
                @"my photo's caption text here.", @"message"
                                nil];

Answer 2

You can upload photo by using iOS Facebook SDK as follows:

    FBSDKSharePhoto *photo=[[FBSDKSharePhoto alloc]init];
    photo.image=slideImage;

    FBSDKSharePhotoContent *content = [[FBSDKSharePhotoContent alloc] init];
    content.photos = @[photo];

    [FBSDKShareDialog showFromViewController:self withContent:content delegate:self];

This works only if you configure iPhone Facebook settings.