[iOS] RadListView scrolls items out of view when the list view resizes

4 posts, 0 answers
  1. Patrick
    Patrick avatar
    12 posts
    Member since:
    Sep 2016

    Posted 30 Oct 2018 Link to this post

    This does not happen on Android.

    RadListView is in a star-sized grid row.  In the same grid, there is an auto-sized row that contains a control who's height changes as the user interacts with the view.  The RadListView uses an item template selector, and items have different heights.

    When the auto-sized row changes height, the star-sized row, which contains the RadListView, changes height.  When this occurs, the items that were visible in the RadListView scroll out of view.  The distance that the RadListView scrolls seems to increase the farther down the list the control is.  It seems that the grid is redrawing itself completely and is trying to maintain the scroll position but is calculating the position incorrectly -- maybe using some default item height instead of the actuall scroll position in pixels.

  2. Yana
    Admin
    Yana avatar
    5013 posts

    Posted 31 Oct 2018 Link to this post

    Hello Patrick,

    Thank you for providing the detailed explanation.

    I was able to observe the described issue with RadListView on iOS and logged it in our public portal, you could subscribe for status changes at the link below:
    https://feedback.telerik.com/Project/168/Feedback/Details/258670-listview-ios-changing-listview-size-does-not-retain-scroll-position-properly

    I've updated your points as a small sign of gratitude for your involvement.

    Regards,
    Yana
    Progress Telerik
    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
  3. Patrick
    Patrick avatar
    12 posts
    Member since:
    Sep 2016

    Posted 31 Oct 2018 in reply to Yana Link to this post

    Thank you.  I'm eagerly looking forward to a fix.  I'm currently in the process of refactoring an app to go back to the XF ListView because of this, but I really would prefer to use the RadListView.
  4. Yana
    Admin
    Yana avatar
    5013 posts

    Posted 01 Nov 2018 Link to this post

    Hi Patrick,

    Thank you for your input on this and I am sorry to hear this issue is a show-stopper for you.  We'll definitely have it in mind when planning our next iterations.

    Regards,
    Yana
    Progress Telerik
    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
Back to Top