Share image on facebook using FBConnect - iphone

Question

After searching 2 days on it m finally posting my code.
Application Description: I am choosing an image through imagePicker and after editing it I want to share it on Facebook.
Problem: I can post the text on my wall but not the image, as i dont have any URL i cant find another way to post image on my wall.
here is the code ( which i stole from another application) of my PostToWall
FBStreamDialog* dialog = [[[FBStreamDialog alloc] init] autorelease];
dialog.userMessagePrompt = #"Enter your message:";
dialog.actionLinks = #"[{\"Get DowntownLA!\",\"href\":\"http://www.facebook.com/DowntownLA.com/\"}]";
dialog.attachment = [NSString stringWithFormat:
#"{ \"name\":\"%#\","
"\"href\":\"%#\","
"\"caption\":\"%#\",\"description\":\"%#\","
"\"media\":[{\"type\":\"image\","
"\"src\":\"%#\","
"\"href\":\"%#\"}],"
"\"properties\":{\"%#\":{\"text\":\"%#\",\"href\":\"%#\"}}}", #"name: priya",#"href nothing",#"cation nothing",#"description nothin", #"imageSource nothing ", #"imageHref nothing", #"linkTitle nothing", #"linkText nothing", #"linkHref nothing"];
[dialog show];
Please tel me wher m going wrong !!!!!
The error m getting on simulator is : Application Response Error - The post action links must be valid URls. You can see this because you are one of the developers of the app.

Answer 1

i have upload image in this way
- (void) postOnFBWall
{
NSMutableDictionary *variables = [NSMutableDictionary dictionaryWithCapacity:2];
//create a UIImage (you could use the picture album or camera too)
UIImage *picture = imgUploadPhoto.image;
//create a FbGraphFile object insance and set the picture we wish to publish on it
FbGraphFile *graph_file = [[FbGraphFile alloc] initWithImage:picture];
//finally, set the FbGraphFileobject onto our variables dictionary....
[variables setObject:graph_file forKey:#"file"];
NSString * messageValue = [NSString stringWithFormat:#"Menu Name: %#, Restaurant: %#, Category: %#, Comment: %#",txtNameofMenu.text,txtRestaurant.text,categoryLbl.text,txtViewComment.text];
[variables setObject:[NSString stringWithFormat:#"%#",messageValue] forKey:#"message"];
//the fbGraph object is smart enough to recognize the binary image data inside the FbGraphFile
//object and treat that is such.....
FbGraphResponse *fb_graph_response = [[FBRequestWrapper defaultManager] doGraphPost:#"me/photos" withPostVars:variables];
NSLog(#"postPictureButtonPressed: %#", fb_graph_response.htmlResponse);
}