Missing RadJumpList or how to display grouped data?

[Seznam]

Hi, another related question when porting my WP8 app to WP8.1 Universal - previously I was using RadJumpList for displaying data in groups. RadJumpList even supported incremental loading in WP8 project.

RadJumpList is not present in the new UI controls for universal apps so I was wondering, is it possible to display grouped data using the RadDataBoundListBox with working incremental loading?
Thanks

[Tsvyatko]

Hi Martin,

Thank you for contacting us!

Currently we do not offer direct JumpList equivalent for WP 8.1 Universal. A possible solution would be to feed DataBoundListBox with flatten data where some of the items represents groups and display them with different data template.

Also, it might be interesting to mention that we are working on data control (ListView) for Windows Universal, that will be capable of displaying group data, support different layouts and data shaping operations. We have scheduled to release it with our next official release early next year.

Regards,
Tsvyatko
Telerik

 

 

[Seznam]

Hi,
If this new ListView you are developing supports Grouping and incremental loading, just like JumpList supported in WP8, then I am looking forward to try it once it's released!

[Tsvyatko]

Hi Martin,

The new ListView control will support Incremental loading with API similar to the one used in RadDataGrid - http://www.telerik.com/help/windows-8-xaml/raddatagrid-datavirtualization.html as well as grouping support + frozen group headers.




Regards,
Tsvyatko
Telerik

 

 

[Seznam]

And additional question, can we expect support for Pull-to-refresh in this new list as well?

Also for your design consideration, this is the use case we have in our app:
The goal is displaying all episodes of selected TV series, grouped by seasons, starting with either the latest or the oldest one. The list should look similarly to the old LongListSelector from WP8 with a sticky group header. This list won't be loaded all at once, because there can be quite a lot of episodes in some series, so ideally first 20 episodes or so will be displayed, and once user scrolls down to the bottom, additional episodes will be loaded.

[Tsvyatko]

Hello Martin,

Indeed, RadListView control will support pull-to-refresh feature as well. The described scenario is one of the essential ones for the ListView.

Regards,
Tsvyatko
Telerik

 

 

[shree]

Hi,

Im using RadListView (windows Universal 2015) and set listView.IncrementalLoadingMode = BatchLoadingMode.Auto andalso used item template selectror,GroupHeaderTemplate, GroupDescriptors. when groupGroupDescriptors is added , control shows a button at the bottom to load the next page. It Totally removes listView.IncrementalLoadingMode = BatchLoadingMode.Auto settings. 

With then same settings scrollItemIntoView is also not working.

[Tsvyatko]

Hi Martin,

Thank you for contacting us! In grouped scenarios Incremental loading mode switches to explicit mode. The reason for that is the fact that as the groups starts supporting collapsing it will not be possible to fill the view port through automatic loading as the items will not be displayed (as part of the collapsed group). Using auto in such scenario could force loading of all items from the remote source.

Currently, if you wish to load more data without pressing the load more items button you can use LoadMoreAsync method as shown in the sample attached.

Regarding the scroll to item - would it be possible to elaborate more on the scenario in with you encounter the issue described.

Regards,
Tsvyatko
Telerik