No content in share dialog when calling presentShareDialogWithParams:clientState:handler - ios

Question

I have followed Facebook's guide, found here, for sharing a link from within an iOS app, but when the share dialog opens in the facebook app, there is no link, or preview, or pictures. This is all I see:
If I enter a comment there, I can post it, but only the comment is visible in the post, not the content I am commenting on. Above my comment it says "2 hours ago via ..." and the name of my app.
I have of course created a facbook app, and it is "live" (not in developement mode). I hva also called [FBSettings setDefaultAppID:]; and [FBAppEvents activateApp]; in applicationDidBecomeActive.
This is my code:
NSString *name = #"Name here";
NSString *url = #"https://google.com/";
NSString *url = #"Caption here";
NSString *linkDescription = #"Description here";
NSString *imageUrl = #"http://i.imgur.com/zLS0g9Z.jpg";
//*
// Check if the Facebook app is installed and we can present the share dialog
FBLinkShareParams *params = [[FBLinkShareParams alloc] init];
params.link = [NSURL URLWithString:url];
params.name = name;
params.caption = caption;
params.linkDescription = linkDescription;
params.picture = [NSURL URLWithString:imageUrl];
// If the Facebook app is installed and we can present the share dialog
if ([FBDialogs canPresentShareDialogWithParams:params]) {
// Present the share dialog
[FBDialogs presentShareDialogWithParams:params clientState:nil 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);
}
}];
} else {
// Fallback: Present the feed dialog
}
The same thing also happens when i try to share an Open Graph story (here).

Answer 1

I figured it out. My url contained some special characters (I replaced the actual url in my code with https://google.com/ before posting the code here). Simply adding the line:
url = [url stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
resolved my issue :)