Variable item size does not rearrange subviews about icarousel

[nicklockwood]

Are you using the carouselItemWidth delegate method, and if so are you also updating the value returned by this method when you rotate the screen?

Nick

(Sent from my iPhone)

On 20 Jul 2011, at 15:40, rpitting [email protected] wrote:

I am not sure if I'm missing something or it's a feature not implemented:

I have a carousel that uses two different item-sizes for portrait and landscape, with the langscape size being smaller.

Therefore, all items shrink in landscape mode. At the moment I call layoutSubviews and reloadData and in didRotateFromInterfaceOrientation.

Unfortunately, this leads to gaps between the items when rotating the device from portrait to landscape, as the subviews do not seem to be rearranged with the new item size (their anchor point just stays where it was).

So does the component not yet support a variable item size? And if it does, what's the right order of calling layoutSubviews etc.?

Or is the (animated) change of the item size currently not possible?

Reply to this email directly or view it on GitHub:
https://github.com/demosthenese/iCarousel/issues/18

[rpitting]

Yes, actually returning two different values in the delegate method carouselItemWidth will work, sorry for this error in my description.

To apply the new size, call reloadData.

Although, the items are not not animated between their two sizes, they jump. But, I admit, animating the size is quite a custom request.

I guess the best way to do this is to get the visible views via iCarousel.visibleViews and animate their centers yourself.

Or is there a smarter way?

[nicklockwood]

This seems like an oversight on my part. I'll see what's involved in adding this feature.

Nick

(Sent from my iPhone)

On 21 Jul 2011, at 09:30, rpitting [email protected] wrote:

Yes, actually returning two different values in the delegate method carouselItemWidth will work, sorry for this error in my description.

To apply the new size, call reloadData.

Although, the items are not not animated between their two sizes, they jump. But, I admit, animating the size is quite a custom request.

I guess the best way to do this is to get the visible views via iCarousel.visibleViews and animate their centers yourself.

Or is there a smarter way?

Reply to this email directly or view it on GitHub:
https://github.com/demosthenese/iCarousel/issues/18#issuecomment-1622121

[nicklockwood]

I'm having trouble reproducing this issue. It seems to work as expected if you simply call reloadData on didRotateFromInterfaceOrientation and then return views of a different size from your viewForItemAtIndex method. Calling layoutSubviews explicitly shouldn't be necessary, so maybe by calling it you are somehow preventing the layout from working correctly?

If you still can't get it working, post the code you are using and I'll investigate further.

[nicklockwood]

Actually, I may have misunderstood what you are trying to do. Are you using the view autoresizingmask to scale your views automatically in response to the screen rotation?

If so, there's a fork here that tweaks the autoresizingmask of the container views so they scale automatically:

https://github.com/veritech/iCarousel

If that solves your problem I might look at rolling it into the main branch.