Add Facebook to UIActivityViewController shares - ios

Question

I am trying to let my iOS app to share using the UIActivityViewController, my problem is i can only share with Message and Mail . In other words the apps that are appear in the UIActivityViewController are only the Message and Mail .
How could I add the FaceBook or Twitter to them .
Here is my code
UIButton *shareButton=(UIButton*)sender;
UIActivityViewController *activityVC=[[UIActivityViewController alloc] initWithActivityItems:
#[#"Programmatically Shared post Just for testing ",
[ [videosList objectAtIndex:shareButton.tag ]videoUrl]]
applicationActivities:nil];
I am already logged in with FaceBook App and it is shown when i trying
to share using another app.

Answer 1

You're probably not logged in to Facebook or Twitter in the devices Settings. They won't show up here unless the user is logged in.
Looks like you are not attaching the URL perfectly :
NSString *shareText = #"Text";
NSURL *shareURL = [NSURL URLWithString:#"http://somewebsite.com"];
NSArray *items = [NSArray arrayWithObjects:
shareText,
_shareImage,
shareURL, nil];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:items applicationActivities:nil];
[activityViewController setValue:shareText forKey:#"subject"];
[self presentViewController:activityViewController animated:YES completion:nil];

Answer 2

NSArray* dataToShare = #[NSURL fileURLWithPath:#"file url"];
// ...or whatever pieces of data you want to share.
UIActivityViewController* activityViewController= [[UIActivityViewController alloc] initWithActivityItems:dataToShare applicationActivities:nil];
[self presentViewController:activityViewController animated:YES completion:^{}];