scroller iPhone with bounce

BNig niggemann at
Tue Dec 7 19:11:54 EST 2010

You would want to look at the scroller on a real device. The simulator does
not scroll. Forgot to mention that in the previous post.


BNig wrote:
> I figured the scroller example in Livecode mobile 4.5.2 was not really
> complete so I set up the new scroller in a little stack: a list field with
> a bounce. The bounce was not obvious from the example so I hope this helps
> people to implement this. (look at the group "umscroll" with lockloc true
> and the list field)
> Almost all the code is in the card script. Except for a mouseUp handler in
> the list field to make the actual selection.
> The new scroller is a very nice object that really makes things a lot
> easier. It scrolls very smoothly even on my slow iPhone 3G. Selection is a
> lot easier since the operating system takes a lot of guesswork out of when
> a touch is the begin of a scroll and when a touch is a selection.
> There is one quirk in the current incarnation of the mobile engine:
> the scroll is really only starting to scroll if you slide the field up and
> then touch the network bar or whatever you call it. The top line of the
> screen where the battery is shown etc. This 'defrosts' the scrolling and
> from then on you can scroll and bounce like you expect it. Runrev is aware
> of the problem.
> the zipped version of the stack:
> regards
> Bernd
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