UIScrollView won't scroll!

To scroll, you have to make the scrollview's frame smaller than it's content, the contained image or view.

I placed all the content of my scrollview in IB. (buttons, labels, text fields, etc). The full size is 500 tall. I then resized it to 436 tall in IB.

Then in code, I put this is viewDidLoad:

optionsScrollView.contentSize = CGSizeMake(320,500);

So that leaves 64 pixels that I can scroll. It works perfectly.

I also placed "UIScrollViewDelegate" in the <> braces of @interface for my .h file and tied the delegate outlet of the scrollview to File's owner in IB.

Scroll view works with this:
Frame
then
contentSize
views or objects etc...

If your frame is set to your content size then it won't scroll. So set your frame ( in IB right panel -> second last tab 'Size Inspector") to the length of your app ( in my case it is 367 as i have a navbar and a tab bar) then programatically set the contentSize to - yup you guessed it ... more than your frame so it can scroll.

Happy days!!

This might be obvious to most, but I spent ages wondering why my UIScrollView wouldn't scroll so I'm posting what was stopping me in case it helps anyone else:

The UIScrollView has to be of the dimensions of the visible area in which you wish it to be presented and not the size of it's contents.

Ridiculous on my behalf I know, but just in case it helps someone.

As mentioned in the accepted answer, you must set the UIScrollView's contentSize property.

This can be done in Interface Builder.

1. Select the scroll view
2. Select the 'identity inspect' in Utilities pane on the right
3. Under 'User Defined Runtime Attributes' click the '+' button
4. Set the 'Key Path' value to 'contentSize'
5. Set the 'Type' value to 'Size'
6. Set the 'Value' value to '{width, height}' (eg: '{320, 600}')

Build and run and your scroll view will scroll.

The content inset does not affect scrolling. See What's the UIScrollView contentInset property for?

more, did you enable scrolling? look at the property

@property(nonatomic, getter=isScrollEnabled) BOOL scrollEnabled