Facebook in iOS6.0 use SLRequest to upload a photo failed anyway - objective-c

Question

Here Comes my Objc code:
ACAccountStore *facebookaccount = [[ACAccountStore alloc] init];
ACAccountType *facebookaccountType = [facebookaccount accountTypeWithAccountTypeIdentifier: ACAccountTypeIdentifierFacebook];
// Specify App ID and permissions
NSDictionary *options = #{ ACFacebookAppIdKey: #"1234567899876543", ACFacebookPermissionsKey: #[#"publish_stream"], ACFacebookAudienceKey: ACFacebookAudienceFriends };
[facebookaccount requestAccessToAccountsWithType:facebookaccountType options:options completion:^(BOOL granted, NSError *error) {
if(granted) {
NSArray *accountsArray = [facebookaccount accountsWithAccountType:facebookaccountType];
if ([accountsArray count] > 0) {
ACAccount *facebookAccount = [accountsArray objectAtIndex:0];
NSString *sendmessage = #"Face";
NSData *myImageData = UIImagePNGRepresentation(imageSource);
SLRequest *facebookRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook requestMethod:SLRequestMethodPOST URL:[NSURL URLWithString:#"https://graph.facebook.com/me/photos"] parameters:nil];
[facebookRequest addMultipartData:myImageData withName:#"source" type:#"multipart/form-data" filename:nil];
[facebookRequest addMultipartData:[sendmessage dataUsingEncoding:NSUTF8StringEncoding] withName:#"message" type:#"multipart/form-data" filename:nil];
[facebookRequest setAccount:facebookAccount];
[facebookRequest performRequestWithHandler:^(NSData* responseData, NSHTTPURLResponse* urlResponse, NSError* error) {
if (error == nil) {
NSLog(#"responedata:%#", [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
}else{
NSLog(#"%#",error.description);
}
}
}
else
{
NSLog(#"error description : %#",[NSString stringWithFormat:#"%#", error.localizedDescription]);
}
}];
Finally I get these respone data:
responedata:{"error":{"message":"(#324) Requires upload file","type":"OAuthException","code":324}}
Help me please!!!

Answer 1

I can successfully upload a photo by including a file name in addMultipartData and by passing the message as part of the SLRequest options.
code:
NSDictionary *parameters = #{#"message": sendmessage};
SLRequest *facebookRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodPOST
URL:[NSURL URLWithString:#"https://graph.facebook.com/me/photos"]
parameters:parameters];
[facebookRequest addMultipartData: myImageData
withName:#"source"
type:#"multipart/form-data"
filename:#"TestImage"];
facebookRequest.account = facebookAccount;
[facebookRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
{
// Log the result
}];