Nome schermata Twitter che restituisce un valore null in Parse

Question

Accesso tramite Twitter e tentativo di ottenere il nome di schermata degli utenti. Il nome dello schermo produce un valore null ogni volta. Qualche idea?

PFUser *currentUser = [PFUser currentUser]; 
    [PFTwitterUtils logInWithBlock:^(PFUser *user, NSError *error) { 
     if (!user) { 
      NSLog(@"Uh oh. The user cancelled the Twitter login."); 
      return; 
     } else if (user.isNew) { 
      twitterScreenName = [PFTwitterUtils twitter].screenName; 
      NSLog(@"%@",[PFTwitterUtils twitter].screenName); 
      NSString * requestString = [NSString stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@", twitterScreenName ]; 

             NSURL *verify = [NSURL URLWithString:requestString]; 
             NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:verify]; 
             [[PFTwitterUtils twitter] signRequest:request]; 

             [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { 
       NSError *error; 
       NSDictionary* result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error]; 
       if (!error) { 

        user.username =twitterScreenName; 
        user[@"name"]= result[@"name"]; 
        user[@"profileDescription"] = result[@"description"]; 
        user[@"imageURL"] = [result[@"profile_image_url_https"] stringByReplacingOccurrencesOfString:@"_normal" withString:@"_bigger"]; 
        [user saveEventually]; 
       } 
      }]; 
      [self performSegueWithIdentifier: @"username" sender: self]; 

     } 

Answer 1

Ecco come lo faccio:

[PFTwitterUtils logInWithBlock:^(BOOL succeeded, NSError *error) { 
    if ([PFTwitterUtils isLinkedWithUser:[PFUser currentUser]]) { 
     NSURL *info = [NSURL URLWithString:@"https://api.twitter.com/1.1/account/settings.json"]; 
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:info]; 
     [[PFTwitterUtils twitter] signRequest:request]; 
     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { 
      if (!!data) { 
       NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil]; 
       NSString *userName = dict[@"screen_name"]; 
       userName = [userName stringByReplacingOccurrencesOfString:@"Twitter:" withString:@""]; 

       PFUser *user = [PFUser currentUser]; 
       user[@"Twitter"] = userName; 
       [user saveEventually]; 
      } else { 
       //uh oh, no twitter response 
      } 
     }]; 
    } else { 
     //uh oh, failed login 
    } 
}]; 

Answer 2

provare a configurare questo nel portale Twitter. Ti fornirà le opzioni per le autorizzazioni della tua app (il che significa che potresti dover abilitare la restituzione di un nome utente manualmente dalla dashboard di Twitter).

Answer 3

- (IBAction)TWloginPress:(id)sender { 
    [activityview setHidden:NO]; 
    [activityview startAnimating]; 
    [[Twitter sharedInstance] logInWithCompletion:^ 
    (TWTRSession *session, NSError *error) { 
     if (session) { 
       [self signupUser:session.userName email:nil loggedinvia:@"TWITTER"]; 
     } else { 
      NSLog(@"error: %@", [error localizedDescription]); 
      UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"There was some problem with signing you with twitter. Please try again." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
      [alert show]; 
     } 
    }]; 
}