title: becomeFirstResponder resets contentOffset
body: <p>I have a UIScrollView in which inside of that I have a UITextField, so what I did is that on the third text field, which is password, I scrolled down the offset of the UIScrollView:</p>
  
  <pre><code>#pragma mark UITextFieldDelegate
  - (void)textFieldDidBeginEditing:(UITextField *)textField
  {
      if ((textField == self.emailTextField_ || textField == self.passwordTextField_)){
          if (self.scrollView_.contentOffset.y != self.emailTextField_.frameY - self.emailTextField_.frameHeight/2){
              shouldAdjustOffset = YES;
          } else {
              shouldAdjustOffset = NO;
          }
  
          if (shouldAdjustOffset){
              [self.scrollView_ setContentOffset:CGPointMake(0, self.emailTextField_.frameY - self.emailTextField_.frameHeight/2) animated:YES];
          }
      }
  }
  
  -(BOOL) textFieldShouldReturn:(UITextField *)textField
  {
      if (textField == self.firstNameTexField_){
          [self.firstNameTexField_ resignFirstResponder];
          [self.lastNameTextField_ becomeFirstResponder];
      } else if (textField == self.lastNameTextField_){
          [self.lastNameTextField_ resignFirstResponder];
          [self.emailTextField_ becomeFirstResponder];
      } else if (textField == self.emailTextField_){
          [self.emailTextField_ resignFirstResponder];
          [self.passwordTextField_ becomeFirstResponder];
      } else if (textField == self.passwordTextField_){
          [self signupButtonPressed:nil];
          [self.passwordTextField_ resignFirstResponder];
      }
  
      return YES;
  }
  </code></pre>
  
  <p>Now the issue is that when I am on the next text field it resets the content offset back to 0, when I do:</p>
  
  <pre><code> [self.emailTextField_ resignFirstResponder];
          [self.passwordTextField_ becomeFirstResponder];
  </code></pre>
  
  <p>. How can I prevent this from happening?</p>