Control scrollview programmatically — Objective-c

Question

I have an scrollview with some buttons on it. When one button is clicked I want it to be on top of the screen so that the button.frame.origin.y is the self.view.frame.origin.y. How do I do this?

Answer 1

You can do this

- (void)buttonPressed:(UIButton*)sender
{
    [scrollView setContentOffset:sender.frame.origin animated:YES];
}

Answer 2

Use the - (void)scrollRectToVisible:(CGRect)rect animated:(BOOL)animated method.

To scroll the view to the desired frame when the button is pressed.

For example:

- (void)buttonPressed:(UIButton*)sender
{
    [scrollView scrollRectToVisible:desireFrameFromButton];
}