Objective-c – How programmatically move a UIScrollView to focus in a control above keyboard

iphoneobjective-cuser-interface

I have 6 UITextFields on my UIScrollView. Now, I can scroll by user request. But when the keyboard appear, some textfields are hidden.

That is not user-friendly.

How scroll programmatically the view so I get sure the keyboard not hide the textfield?

Best Solution

Here's what worked for me. Having an instance variable that holds the value of the UIScrollView's offset before the view is adjusted for the keyboard so you can restore the previous state after the UITextField returns:

//header
@interface TheViewController : UIViewController <UITextFieldDelegate> {
    CGPoint svos;
}


//implementation
- (void)textFieldDidBeginEditing:(UITextField *)textField {
    svos = scrollView.contentOffset;
    CGPoint pt;
    CGRect rc = [textField bounds];
    rc = [textField convertRect:rc toView:scrollView];
    pt = rc.origin;
    pt.x = 0;
    pt.y -= 60;
    [scrollView setContentOffset:pt animated:YES];           
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [scrollView setContentOffset:svos animated:YES]; 
    [textField resignFirstResponder];
    return YES;
}