UIScrollview help

sregorcinimod · 03-27-2011, 04:16 PM

Firstly I am not a developer by trade, just a BA/Consultant filling a gap.

I am looking to create multiple scrollviews to scroll as a background, but at different speeds. Just like the background of a level in angry birds.

I have managed to get all the scrollviews to appear and scroll together but now i need to scroll them at different speeds I know I need to use the UIScrollViewDelegate commands in order to interact and register when a scroll has occured, but have been hitting my head against a brick wall.

Is there anyone out there that has a sample project with different scrollviews scrollinf at different speeds, so that i can look at it and break down so that I can understand the mechanics of the scrollviews and delegate etc.

Thanks in advance

BrianSlick · 03-27-2011, 04:32 PM

How are you making them scroll now?

sregorcinimod · 03-27-2011, 07:57 PM

Quote:

Originally Posted by BrianSlick

How are you making them scroll now?

By having ScrollEnabled = YES
and then adding them as subviews of the main view

BrianSlick · 03-27-2011, 07:58 PM

No, that allows them to scroll. How are you making them scroll?

And/or, if I'm not understanding the scenario correctly, how have you linked them?

sregorcinimod · 03-28-2011, 12:17 AM

I'm making through scroll through user interaction.

In terms of linking them I add the UIScrollViews in Interface builder and structure them such that they make a heirarchy. This is because the images sit on top of each other and therefore have to be in a certain order

BrianSlick · 03-28-2011, 06:24 AM

Oh, so you're really only scrolling one of them.

You're going to have to use the scroll view delegate methods. When one scrolls by 1 pixel, move the next by, say, 2 pixels, and so on.