iOS6 social framework bring up No Account Alert - ios

Question

Similar to iOS 6 Social framework not going to settings or no alert but i am trying to use SLRequest:
I am trying to bring up the alert "No Facebook Account" when the user has not logged in to Facebook in the Settings. I have found that the alert appear AFTER you present the SLComposeViewController, rather than inside the if statement.
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook])
{
SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
//setup controller and callback code
[self presentViewController:controller animated:YES completion:nil];
}
However, I am trying to use SLRequest and i dont want to present the SLComposeViewController, but instead, after checking the accounts, popup the alert. My code is here:
- (void)postImageFB
{
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
NSLog(#"can post");
} else {
NSLog(#"cant post");
}
ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
NSArray *accountsArray = [accountStore accountsWithAccountType:accountType];
NSLog(#"accounts: %i", [accountsArray count]);
// Is it possible to popup the alert here if accounts = 0?
NSDictionary *options = #{ ACFacebookAppIdKey: #"123456789", ACFacebookPermissionsKey: #[#"publish_stream"], ACFacebookAudienceKey: ACFacebookAudienceFriends };
[accountStore requestAccessToAccountsWithType:accountType options:options completion:^(BOOL granted, NSError *error) {
if(granted) {
NSArray *accountsArray = [accountStore accountsWithAccountType:accountType];
if ([accountsArray count] > 0) {
ACAccount *facebookAccount = [accountsArray objectAtIndex:0];
NSDictionary *parameters = #{#"message": #"testing"};
SLRequest *facebookRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodPOST
URL:[NSURL URLWithString:#"https://graph.facebook.com/me/photos"]
parameters:parameters];
[facebookRequest addMultipartData: [self getImageDataFromPlistWithFilename:#"image1.png"]
withName:#"source"
type:#"multipart/form-data"
filename:#"TestImage"];
facebookRequest.account = facebookAccount;
[facebookRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
{
if (error) {
NSLog(#"%#",error.description);
} else {
NSLog(#"responedata:%#", [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
}
}];
}
}
}];
}

Answer 1

Ok, I have discovered that isAvailableForServiceType always returns true?
so started testing on the device.
I figured that using an invisible SLComposeViewController to bring up the Alert seems to be a suitable workaround:
if (![SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
controller.view.hidden = YES;
[self presentViewController:controller animated:NO completion:nil];
} else {
// Put posting code here: SLComposeViewController or SLRequest
}