title: How to use textFieldShouldReturn method as selector action?
body: <p>On the right is picker view toolbar button 'Next' and want to call <code>textFieldShouldReturn</code> method on its action via <code>@selector</code>. But it gives me error <code>Undeclared Selector</code>.
  This is button's code,</p>
  
  <pre><code> UIBarButtonItem *nextBtn = [[UIBarButtonItem alloc] initWithTitle:@"Next" style:UIBarButtonItemStylePlain target:self action:@selector("textFieldShouldReturn here")]; 
  </code></pre>
  
  <p>And this is my textFieldShouldReturn method,</p>
  
  <pre><code>-(BOOL)textFieldShouldReturn:(UITextField *)textField
  {
  [textField resignFirstResponder];
  self.addScrollView.contentSize = CGSizeMake(320, 1800);
  [self.addScrollView setContentOffset:CGPointMake(0, 0 ) animated:NO];
  
   if (textField == industryTxtField) {
      [subIndustryTxtField becomeFirstResponder];
  }
  else if (textField == subIndustryTxtField) {
      [address1TxtField becomeFirstResponder];
  }
  </code></pre>
  
  <p><a href="http://i.stack.imgur.com/SpHAG.png" rel="nofollow">ScreenShot</a></p>