title: how to set UIFont bold in iphone application
body: <p>I  want to set the font of <code>UILabel</code> to <strong>helvetica bold</strong> but <strong>it just shows normal font.</strong></p>
  
  <p>I am using below code</p>
  
  <pre><code>UILabel *labelHeadingOne = [[UILabel alloc] initWithFrame:CGRectMake(22,260, 504, 20)];
  labelHeadingOne.backgroundColor = [UIColor clearColor];
  
  labelHeadingOne.font=[UIFont fontWithName:@"Helvetica" size:16];
  
  labelHeadingOne.text=@"Pre-emergent herbicide with residual control for warm-season turf";
  </code></pre>