How to post a photos on facebook through iPhone app?
<p>I am trying to post image on facebook but not successful yet,
my codes are:</p>

<pre><code>- (void)postToWall{

int im = 1;
NSData *myimgData; 
myimgData = [NSData dataWithContentsOfFile:saveImagePath];
//pstimg = myimgData;
NSArray *chunks = [pstimg componentsSeparatedByString: @"."];
NSString *atch= [chunks objectAtIndex: 0];



NSString *filePath = [[NSBundle mainBundle] pathForResource:atch ofType:@"jpg"];  


img  = [[UIImage alloc] initWithContentsOfFile:filePath];

//start

FBDialog* dialog = [[[FBStreamDialog alloc] init] autorelease];

NSString *str = @"Hello"; 
str = [str stringByReplacingOccurrencesOfString:@" " withString:@"+"];
dialog.cMessage=str;

dialog.userMessagePrompt = @"Enter your message:";


[dialog show];

NSData * findata;


    //edited from here


    if(im==1)
    {
        findata = myimgData;    

    }
    else
    {
        findata  = (NSData *)img;   

    }

    NSMutableDictionary * param = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   img, @"picture",
                                   nil];

    FBRequest *uploadPhotoRequest =[FBRequest requestWithDelegate:self] ;
    [uploadPhotoRequest call:@"facebook.photos.upload" params:param dataParam:myimgData];



    [img release];
</code></pre>

<p>}</p>

<p>But it not posted.</p>
