Hi,
in our Xamarin-Forms Project, I use a Telerik ListView (LinearLayout) with swiping. For some cells, i want to disable swiping. In your manual [1] i read, that by setting the Cancel-property of the ItemSwipeStartingEventArgs to false in the StartSwiping-Event:
public void OnItemSwipeStarting(object sender, ItemSwipeStartingEventArgs e)
{
var swipedItem = e.Item as OurItem;
if (swipedItem.HasACertainProperty == true)
{
// For some items, we want to "disable" the swiping
e.Cancel = false;
}
}
This does not work, but when i set e.Cancel to true, then
in iOS - swiping is disabled as expected.
in Android - we get a NullPointerException: (Java.Lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Rect.height()' on a null object reference)
in UWP - the CellContent disapears and never comes back again :'-(
The question is: is it possible to "disable" swiping for some cells in the Telerik ListView? If the answer is yes, how could I do this?
Thank you very much in advance.
All the best,
Ivo
[1] http://docs.telerik.com/devtools/xamarin/controls/listview/gestures/listview-gestures-cell-swipe
3 Answers, 1 is accepted
Thank you for contacting us.
Indeed, there is an issue with canceling the item swipe. I have logged a bug report in our feedback portal where you can track the status of the issue. I have also updated your Telerik points as a token of gratitude for bringing this issue to our attention.
Regards,
Rosy Topchiyska
Telerik by Progress
Rank 1
Hi Rosy,
thank you very much for your Reply - since you have a bugfix for this, I use the ItemSwiping-Event as a workaround for this bug:
public void OnItemSwiping (object sender, ItemSwipingEventArgs e)
{
//Workaround, that prevents swiping
// as e.Cancel does not work properly in UWP and Droid
if (Device.OS != TargetPlatform.iOS)
{
var swipedItem = e.Item as OurItem;
if (swipedItem.IsYellowNoteCapable) { listView.EndItemSwipe(); } } }
Rank 1