title: Unable to use class(swift) into objective c
body: <p>I am doing the same steps written in  apple documentation. But I am not able to access swift class in objective c file.</p>
  
  <p><strong>Code:</strong></p>
  
  <p><strong>Swift file</strong></p>
  
  <pre><code>import Foundation
  import UIKit
  @objc class checkk : UIViewController {
      func alertView ()
      {
          let al = UIAlertView(title: "HeLLo", message: "Working", delegate: nil, cancelButtonTitle: "OK", otherButtonTitles: "ww", "sdd")
  
          al.show()
  
      }
  }
  </code></pre>
  
  <p><strong>Objective C file</strong></p>
  
  <pre><code>#import "ViewController.h"
  
  #import "SwiftIntoObjectiveC-Bridging-Header.h"  // automatically generated by Xcode. Nothing is written in this.
  
  @interface ViewController ()
  
  @end
  
  @implementation ViewController
  
  - (void)viewDidLoad {
      [super viewDidLoad];
  
       checkk *ck =[checkk new];  // error : use of undeclared identifier check.
  
      // Do any additional setup after loading the view, typically from a nib.
  }
  
  - (void)didReceiveMemoryWarning {
      [super didReceiveMemoryWarning];
  
      // Dispose of any resources that can be recreated.
  }
  
  - (IBAction)Click:(id)sender {
  
  }
  @end
  </code></pre>
  
  <p><strong>Error</strong>: 
   use of undeclared identifier check.</p>