==============================
DECLARATION FILE
==============================
@interface ScrollViewViewController : UIViewController <UIScrollViewDelegate, UITextFieldDelegate>
{
	UIScrollView *m_scrollView;
	UITextField *m_textField1;
	UITextField *m_textField2;
}
 
@property(nonatomic,retain) IBOutlet UIScrollView *m_scrollView;
@property(nonatomic,retain) IBOutlet UITextField *m_textField1;
@property(nonatomic,retain) IBOutlet UITextField *m_textField2;
 
- (void)scrollViewToCenterOfScreen:(UIView *)theView;
 
@end
 
==============================
IMPLEMENTATION FILE
==============================
- (void)viewDidLoad {
    [super viewDidLoad];
 
	m_scrollView.contentSize = CGSizeMake(320, 1000);
	[self.view addSubview:m_scrollView];
}
 
...
#pragma mark * TextField Delegate Methods
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
	[textField resignFirstResponder];
	return NO;
}
 
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
	[self scrollViewToCenterOfScreen:textField];
}
 
- (void)scrollViewToCenterOfScreen:(UIView *)theView 
{  
	CGRect keyboardBounds;
    CGFloat viewCenterY = theView.center.y;  
    CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame];  
 
    CGFloat availableHeight = applicationFrame.size.height - keyboardBounds.size.height;    // Remove area covered by keyboard  
 
    CGFloat y = viewCenterY - availableHeight / 2.0;  
    if (y < 0) {  
        y = 0;  
    }  
    m_scrollView.contentSize = CGSizeMake(applicationFrame.size.width, applicationFrame.size.height + keyboardBounds.size.height);  
    [m_scrollView setContentOffset:CGPointMake(0, y) animated:YES];
}