I'd like to post on user's wall from my iOS app. The message I am posting may contain another user's name as a link (same as when we use @ on facebook). This is my code:
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
[NSString stringWithFormat:@"This is my message @[%@:1:%@]", facebookManager.userId,facebookManager.userName], @"message",nil];
but this code doesn't work. Does any one know if graph api supports @mention? I didn't find a document to negate it.
No, it does not support that.
There are several older questions regarding that topic here on SO, but they all come to the conclusion that it is not possible.