TwitterAPI

-(void) logInWithTwitter
{
    // check Twitter is configured in Settings or not
    if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]){
        self.accountStore = [[ACAccountStore alloc] init]; //retain ACAccountStore
        ACAccountType *twitterAcc = [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
        [self.accountStore requestAccessToAccountsWithType:twitterAcc options:nil completion:^(BOOL granted, NSError *error){
             //permission is granted
             if (granted){
                 self.account = [[self.accountStore accountsWithAccountType:twitterAcc] lastObject];
                 NSDictionary* parameters = @{@"screen_name" : self.account.username};
                 NSURL* getUrl = [NSURL URLWithString:@"https://api.twitter.com/1.1/users/show.json"];
                 SLRequest *getRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:getUrl parameters:parameters];
                 getRequest.account=self.account;
                 [getRequest performRequestWithHandler:^(NSData *responseData,
                                                         NSHTTPURLResponse *urlResponse, NSError *error){
                      //NSLog([NSString stringWithFormat:@"%li",(long)urlResponse.statusCode]);
                      NSError *jsonError;
                      NSDictionary *acquiredData = [NSJSONSerialization JSONObjectWithData:responseData
                                                                                   options:NSJSONReadingAllowFragments
                                                                                     error:&jsonError];
                      if(acquiredData){
                          self.userDict = @{
                                            @"username":acquiredData[@"screen_name"],
                                            @"profilePic":acquiredData[@"profile_image_url_https"],
                                            @"name":acquiredData[@"name"],
                                            @"id":acquiredData[@"id_str"],
                                            @"location":acquiredData[@"location"]
                                            };
                          /*
                          UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"Log In Successful!" message:[NSString stringWithFormat:@"Welcome, %@", acquiredData[@"name"] ] delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles: nil];
                          [alert addButtonWithTitle:@"Thanks!"];
                          [alert show];
                           */
                          
                          [self performSegueWithIdentifier:@"Login" sender:self];
                      }else{
                          NSLog(@"JSON Error: %@", [jsonError localizedDescription]);
                      }
                  }];
             }
             //permission is not granted
             else{
                 if (error == nil) {
                     NSLog(@"User Has disabled your app from settings...");
                 }
                 else{
                     NSLog(@"Error in Login: %@", error);
                 }
             }
         }];
    }
    else{
        NSLog(@"Not Configured in Settings......"); // show user an alert view that Twitter is not configured in settings.
        UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"No Set Up" message:@"Your device is not yet set up with Twitter, please go to System Prefence > Twitter to connect your device with Twitter" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles: nil];
        [alert show];
    }
}