title: No Visible @interface for 'NSString' declares the selector 'setText:'
body: <p>I tried to extract some values from a core data entry and assign them to NSStrings. So far my code looks like this:</p>
  
  <pre><code>#import "CopyToClipViewController.h"
  
  @interface CopyToClipViewController ()
  
  @end
  
  @implementation CopyToClipViewController
  @synthesize device;
  
  
  - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
  {
      self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
      if (self) {
          // Custom initialization
      }
      return self;
  }
  
  - (void)viewDidLoad
  {
      [super viewDidLoad];
      // Do any additional setup after loading the view.
  
      if (self.device) {
          NSString *namevalue;
          NSString *versionvalue;
          NSString *companyvalue;
          [namevalue setText:[self.device valueForKey:@"name"]];
          [versionvalue setText:[self.device valueForKey:@"version"]];
          [companyvalue setText:[self.device valueForKey:@"company"]];
      }
  }
  
  - (void)didReceiveMemoryWarning
  {
      [super didReceiveMemoryWarning];
      // Dispose of any resources that can be recreated.
  }
  
  @end
  </code></pre>
  
  <p>I am receiving the error, No Visible @interface for 'NSString' declares the selector 'setText:' for all three lines that try to set data to the NSStrings. Any ideas for solutions? Thanks in advance!</p>