Image Post on Facebook? - iphone

Question

In my application. I successfully post a image on my Facebook wall (image type JPEG Type). It's work fine in Simulator and and Device also.
But the problem is that When I Capture Image from my iPhone or select an image from library which is captured by camera. It is not Posted on Facebook Wall.
on other hand when i choose any jpeg image (downloaded by internet) from my iPhone library. It post on wall.
In my opinion there is image format problem. Please Guide me
Thanks
My code is here.
-(IBAction)clickButtonClicked
{
// For link post
NSString *Message = [NSString stringWithFormat:#"Testing Iphone App : \"http://www.google.com\" "];
DataClass *obj=[DataClass getInstance];
UIImage *image=[[UIImage alloc]init ];
image= obj.imgFinalImage;
NSMutableDictionary *params1 = [[NSMutableDictionary alloc]init];
[params1 setObject:image forKey:#"source"];
[params1 setObject:Message forKey:#"message"];
NSString *post=#"/me/photos";
[[appDelegate facebook] requestWithGraphPath:post andParams:params1 andHttpMethod:#"POST" andDelegate:self];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Message!" message:#"Invitation Send Sucessfully" delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
[alert release];
}

Answer 1

My guess is that you pass the image in the wrong property:
NSMutableDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
sobj.imgFinalImage, #"picture",
Message, #"caption",
nil];
[[appDelegate facebook] requestWithMethodName:#"photos.upload"
andParams:params
andHttpMethod:#"POST"
andDelegate:self];
Then make sure you implement the delegate of Facbook request to check if the image is uploaded.
With the graph API you can't send a UIImage directly, you need to send the NSData representation of the UIImage:
NSMutableDictionary *params1 = [[NSMutableDictionary alloc]init];
NSData *imageDate = UIImagePNGRepresentation(obj.imgFinalImage);
[params1 imageDate forKey:#"source"];
[params1 setObject:Message forKey:#"message"];
NSString *post=#"/me/photos";
[[appDelegate facebook] requestWithGraphPath:post andParams:params1 andHttpMethod:#"POST" andDelegate:self];