Unable to post an article with Facebook SDK on iOS with UIActivityViewController? - ios

Question

Building an iOS app for reading articles. I’m using Facebook SDK to share the article link and image on Facebook.
This is the process:
1.After clicking on bar button item on top right, UIActivityViewController gets opened on the bottom of the screen which gives option to share via fb, google , linked in etc.
2.On clicking the Facebook button in UIActivityVIewController, default screen opens for sharing but ideally fb SDK code should get executed.
The following "if condition” does not executed.
[AVC setCompletionHandler:^(NSString *activityType, BOOL completed)
{
if([activityType isEqualToString: UIActivityTypePostToFacebook]){
FBLinkShareParams *params = [[FBLinkShareParams alloc] init];
3.But when clicked on the cancel button of the default screen, “if condition" gets executed and app is able to share the article as expected.
Here is the code.
- (IBAction)ysshareAction:(id)sender {
NSURL *Imageurl = [NSURL URLWithString:_DetailModal1[2]];
NSData *data = [NSData dataWithContentsOfURL:Imageurl];
UIImage *image = [[UIImage alloc] initWithData:data];
NSURL *linkURL = [NSURL URLWithString:_DetailModal1[4]];//article url
NSMutableAttributedString *stringText = [[NSMutableAttributedString alloc] initWithString:_DetailModal1[0]];//_DetailModal1[0] contain article title////
[stringText addAttribute:NSLinkAttributeName value:linkURL range:NSMakeRange(0, stringText.length)];
NSArray *itemArrany = #[stringText,image,];//title is displayed but not as hyperlink.
UIActivityViewController *AVC = [[UIActivityViewController alloc] initWithActivityItems:itemArrany applicationActivities:nil];
AVC.excludedActivityTypes=#[];
[AVC setCompletionHandler:^(NSString *activityType, BOOL completed)
{
if([activityType isEqualToString: UIActivityTypePostToFacebook]){
FBLinkShareParams *params = [[FBLinkShareParams alloc] init];
params.link = [NSURL URLWithString:#"https://www.youtube.com/watch?v=pa8lsBNG31c"];
// // If the Facebook app is installed and we can present the share dialog
if ([FBDialogs canPresentShareDialogWithParams:params]) {
// Present share dialog
[FBDialogs presentShareDialogWithLink:params.link
handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
// Success
NSLog(#"result %#", results);
}
}];
// If the Facebook app is NOT installed and we can't present the share dialog
} else {
// FALLBACK: publish just a link using the Feed dialog
// Put together the dialog parameters
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
#"YourStory", #"name",
_DetailModal1[0], #"caption",
_DetailModal1[4], #"link",
_DetailModal1[2], #"picture",
nil];
// Show the feed dialog
[FBWebDialogs presentFeedDialogModallyWithSession:nil
parameters:params
handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
if (result == FBWebDialogResultDialogNotCompleted) {
// User canceled.
NSLog(#"User cancelled.");
} else {
// Handle the publish feed callback
// NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
// if (![urlParams valueForKey:#"post_id"]) {
// User canceled.
NSLog(#"User cancelled.");
// } else {
// User clicked the Share button
// NSString *result = [NSString stringWithFormat: #"Posted story, id: %#", [urlParams valueForKey:#"post_id"]];
//
}
}
}];
}
}
}];
[self presentViewController:AVC animated:YES completion:nil];
}
Any help is really appreciated.