Enless sroll

[OfficeHeart]

Hello,

The loading image don't stop when endless scrolling is used: http://jsbin.com/eqisip/17/edit

I know that  something changed in the behaviour. But how can I get this smooth?
And in some cases my list has 2 items. Then I also see the loading image.

Thanks,
Martin

[Petyo]

Hi Martin,

The loading image is visible due to page size being not enough, as described in our documentation. In case your list features 2 items, you should make sure that the schema total method returns the correct number, too.

Regards,
Petyo
Telerik

[OfficeHeart]

Hi Peyto,

My total scheme returns the correct number of items (2). But the loading image is still shown.

Thanks,
Martin

[Petyo]

Hello Martin,

I think I managed to reproduce the problem (http://jsbin.com/eqisip/20/edit); we will try to address it as soon as possible. Please let me know if your case is the same.

Regards,
Petyo
Telerik

[OfficeHeart]

Hello Petyo,

This is exactly what I mean.

Thanks in advance,
Martin

[Petyo]

Hello Martin,

The issue is fixed and available in our latest internal build, published on Friday.

Regards,
Petyo
Telerik

[OfficeHeart]

Hi Peyto,

Thank you for fixing the issue. I don't know why the beheavior from Endless scrolling is changed because it was working perfectly.

I have still the following issue:
When srolling down and back up, there is an empty space, with does not disappear. I demostrated this in the following http://screencast.com/t/Avq0ZNBvXv
and this is the source: http://jsbin.com/eqisip/46/edit

And the endless scrolling is ony smooth when I set the pagesize to 50.....thats a lot!

-Martin

[Petyo]

Hello,

The change of the implementation was due to performance reasons - a listview with 150+ items easily crashed the app due to amount of DOM elements. If you have fewer items to display, you may show them right away, in fact.

The 1/2 items being displayed behavior you observe is described in our documentation. In general, this should not be a problem on a mobile device screen. 

Regards,
Petyo
Telerik

[OfficeHeart]

Hi Petyo,

Actually I have the same problem on mobile devices! I tested this on Iphone 4 with the latest IOS 6 version.

You can reproduce it when your load the Endless scrolling demo (http://demos.kendoui.com/mobile/listview/endless-scrolling.html#/).

Scroll down a few times and backup. The endless scrolling is not smooth, de scroller jumps! 
And sometimes there is an empty area above (see the attached screenshot). As shown in the screencast.

I have these problems only on iphone so far.

Thanks,
Martin

[Petyo]

Hello Martin,

Your sample has a total set of 100. The demos page has it set to 77. I suspect this to be the problem you are facing. 

Regards,
Petyo
Telerik

[OfficeHeart]

Hi Petyo,

The endless scrolling demo does not work smooth on Iphone. Please try your own demos on a iphone device.

Scroll down a few times and backup. The endless scrolling is not smooth, de scroller jumps! 
And sometimes there is an empty area above (see the attached screenshot). 

Thanks in advance,
Martin

[Petyo]

Hi Martin,

Did my recommendation about the total configuration work for your case? 

Regards,
Petyo
Telerik

[OfficeHeart]

Hi Petyo,

This is about your own demo: http://demos.kendoui.com/mobile/listview/endless-scrolling.html#/

Please have a look at this problem on a iphone device.

Thanks,
Martin

[Petyo]

Hello Martin,

I tested the demo on iPhone 4s and iPhone 5 (the latter performing better, obviously). I could not reproduce the empty area from the screenshot. The empty area is reproducible only in your example, and this is due to incorrect total configuration. 

Regards,
Petyo
Telerik

[KSBA Techie]

 I installed the latest build and the endless scroll is still acting funky...

• The scrolling image would show and stay on the screen on page load.
• It would not show all the items but would cut it off after 5 items in a 35 item list and show the loading icon...

I've resolved to go back to the previous build for my iPhone/iPad app...  I've started using the Flat design on my Android app but I will have to revert that as well if this issue is not resolved...

Thanks,
Nathan

[Petyo]

Hello Tech Admin,

This forum thread (and the other 5 threads you posted in) feature detailed explanations, links and working samples that illustrate the changes we introduced in the new release, as well as what is needed in order for the newly introduced virtual mode to work as expected. Please look through the resources mentioned.

In case the suggestions provided do not work in your case, you may file a support ticket with a runnable sample attached. 

Regards,
Petyo
Telerik