Does Kanban have a Footer template or something similar?

Question

I want to add a Add button in the end of every Column in Kanban, does it have a footer just like the Header?

SaiGanesh Sakthivel · Accepted Answer

Hi
Felipe,#Regarding
HeaderTemplate does not work correctlyWe
are glad to announce that our Essential Studio 2022 Volume 4 Main Release
V20.4.0.38 is rolled out and the reported issue fix is available for download
under the following link.https://www.syncfusion.com/forums/179561/essential-studio-2022-volume-4-main-release-v20-4-0-38-is-available-for-downloadFeedback: https://www.syncfusion.com/feedback/38075/card-template-height-and-header-template-doesnt-update-correctly
Release note: https://help.syncfusion.com/xamarin/release-notes/v20.4.0.38?type=all#sfkanban-bug-fixesWe thank you for your support and appreciate your patience in
waiting for this release. Please get in touch with us if you would require any
further assistance.#Regarding
Drag a card it causes an exception in iOS when using the Html text typeThe
reported scenario is the framework issue. Currently, we have logged an issue
report for the same with framework side, kindly refer the following link for
the same,https://github.com/xamarin/xamarin-macios/issues/17099We
are having following the reported bug, once we got the solution from the
Xamarin team, we will update you the further details. We appreciate your
patience until then.Regards,SaiGanesh Sakthivel

SaiGanesh Sakthivel · Answer

Hi
Felipe,As
per the implementation of SfKanban, we do not have footer template support for
the column in the SfKanban. As of now, we have header template support for the
column in the SfKanban.Regards,
SaiGanesh Sakthivel

Felipe · Answer

I'm trying to put a button on the End of the Header using HorizontalOptions but it doesn't work properly. First Column doesn't show properly

                    
                        
                                                              BackgroundColor="#F5F5F5">
                                                                       Grid.ColumnSpan="2"
                                       Grid.Row="0"
                                       MaxLines="1"
                                       LineBreakMode="TailTruncation"
                                       FontAttributes="Bold"
                                       FontSize="24"
                                       TextColor="#000" />
                                                                       Grid.Row="1"
                                       Grid.Column="0"
                                       TextColor="#B3000000"
                                       FontSize="14" />
                                                                       Grid.Column="1"
                                       Grid.Row="1"
                                       HorizontalOptions="EndAndExpand">

Felipe · Answer

I could make it work as I wish, just using constant values in Column Definitions and HorizontalOptions="StartAndExpand"But for some reason, when I use the other code, the first column doesn't fit correctly

SaiGanesh Sakthivel · Answer

Hi
Felipe,#Regarding
HeaderTemplate does not work correctly We
could not replicate the reported scenario from our end. We have prepared the
sample as per the information and checked the sample from our side. Please
refer to the tested sample in the following locations.Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/KanbanXamarin1776739090Please
check the sample and let us know if you still facing the same issue? If not,
please modify the sample based on your scenario and revert us back with
the following details, Modify our sample to
reproduce the issue.Share the issue
replicate platform details.It
will be helpful for us to check on it and provide you with the solution as soon as possible. 
  Regards,
SaiGanesh Sakthivel

Felipe · Answer

Sorry for delay, I was figuring out why the problem is happening and trying to repliace in a sample.

When I navigate using Prism from one page to another that have Kanban view, breaks header template, for example if in App.xaml OnInitialized method I navigate to KanbanPage:

NavigationService.NavigateAsync("MenuPage/NavigationPage/KanbanPage");

The problem doesn't happens at all, but if I navigate to any other page then navigate to KanbanPage, the problem happens:

NavigationService.NavigateAsync("MenuPage/NavigationPage/MainPage");

Then:

navigationService.NavigateAsync("KanbanPage");

Attachment: KanbanColumnBugSample_62fa915e.rar

SaiGanesh Sakthivel · Answer

Hi
Felipe,#Regarding
HeaderTemplate does not work correctlyCurrently,
we are validating the reported scenario from our end. We will update you with
the further details on October 10, 2022. We appreciate the patience until
then.Regards,
SaiGanesh Sakthivel

SaiGanesh Sakthivel · Answer

Hi
Felipe,#Regarding
HeaderTemplate does not work correctlyCurrently,
we are analyzing the reported scenario in our source level. We will update you
with further details on October 12, 2022. We appreciate the patience until
then.Regards,SaiGanesh Sakthivel

Felipe · Answer

Another problem, but that time is in IOS, I'm using iOS simulator and I got some problems in the sample.

HeaderTemplate doesn't show for some seconds in IOS for some reason;
When I try to Drag a card it causes an exception.

Drag exception:

Foundation.MonoTouchException: 'Objective-C exception thrown.  Name: NSRangeException Reason: *** -[__NSArrayM objectAtIndexedSubscript:]: index 1 beyond bounds [0 .. 0]
Native stack trace:
0   CoreFoundation                      0x00007fff203feba4 __exceptionPreprocess + 242
1   libobjc.A.dylib                     0x00007fff201a1be7 objc_exception_throw + 48
2   CoreFoundation                      0x00007fff2047ef64 _CFThrowFormattedException + 194
3   CoreFoundation                      0x00007fff202fbd15 -[__NSArrayM removeAllObjects] + 0
4   UIKitCore                           0x00007fff246fa5ed -[UICollectionViewFlowLayout _getSizingInfosWithExistingSizingDictionary:] + 1537
5   UIKitCore                           0x00007fff246fc0cc -[UICollectionViewFlowLayout _fetchItemsInfoForRect:] + 228
6   UIKitCore                           0x00007fff246f54c6 -[UICollectionViewFlowLayout collectionViewContentSize] + 48
7   UIKitCore                           0x00007fff246ee8ec -[UICollectionViewData _validateContentSize] + 72
8   UIKitCore                           0x00007fff246f0d75 __45-[UICollectionViewData validateLayoutInRect:]_block_invoke.88 + 32
9   UIKitCore                           0x00007fff246ef8fd -[UICollectionViewData validateLayoutInRect:] + 538
10  UIKitCore                           0x00007fff246b108f -[UICollectionView layoutSubviews] + 217
11  UIKitCore                           0x00007fff2561d2b1 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2962
12  QuartzCore                          0x00007fff289e2d2e _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 548
13  QuartzCore                          0x00007fff289edebf _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 65
14  QuartzCore                          0x00007fff28929c86 _ZN2CA7Context18commit_transactionEPNS_11TransactionEdPd + 700
15  QuartzCore                          0x00007fff28961853 _ZN2CA11Transaction6commitEv + 699
16  QuartzCore                          0x00007fff28962bd4 _ZN2CA11Transaction25flush_as_runloop_observerEb + 60
17  CoreFoundation                      0x00007fff2036bc67 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
18  CoreFoundation                      0x00007fff2036648c __CFRunLoopDoObservers + 541
19  CoreFoundation                      0x00007fff20366a3c __CFRunLoopRun + 1126
20  CoreFoundation                      0x00007fff203660f3 CFRunLoopRunSpecific + 567
21  UIFoundation                        0x00007fff2435566c -[NSHTMLReader _loadUsingWebKit] + 1753
22  UIFoundation                        0x00007fff24356557 -[NSHTMLReader attributedString] + 22
23  UIFoundation                        0x00007fff242d353e _NSReadAttributedStringFromURLOrData + 9230
24  UIFoundation                        0x00007fff242d10bb -[NSAttributedString(NSAttributedStringUIFoundationAdditions) initWithData:options:documentAttributes:error:] + 144
25  KanbanXamarin.iOS                   0x00000001088c8449 xamarin_dyn_objc_msgSend + 217
26  ???                                 0x0000000115d53c6e 0x0 + 4661263470
'

But I don't know if it happens because of iOS simulator or Kanban

Felipe · Answer

I found out that exception is caused because of a label of TextType Html inside CardTemplate, but it only happens in iOS. The problem with HeaderTemplate I think is something with

await Task.Delay(500).ConfigureAwait(false);

But I'm not sure

SaiGanesh Sakthivel · Answer

Hi
Felipe,Thank
you for the update. We will check and update you on the further details on
October 12, 2022. We appreciate the patience until then.Regards,SaiGanesh
Sakthivel

SaiGanesh Sakthivel · Answer

Hi
Felipe,#Regarding
HeaderTemplate doesn’t work correctly and Drag a card it causes an exception in
iOSWe
have logged the issue report for the same. We will fix the issue and include
the issue fix in our Weekly nuget release which is expected to roll out on November
1, 2022. We appreciate your patience until then.You
can track the status of this report through the following feedback link,https://www.syncfusion.com/feedback/38075/card-template-height-and-header-template-doesnt-update-correctlyNote: The provided
feedback link is private, you need to login to view this feedback.Regards,SaiGanesh
Sakthivel

Felipe · Answer

What about the the HeaderTemplate not rendering when usingawait Task.Delay(500).ConfigureAwait(false);Is there a workaround?

SaiGanesh Sakthivel · Answer

Hi Felipe,#Regarding HeaderTemplate is not rendering in iOSThe reported scenario occurs when we add the columns for the kanban inside the OnNavigatedTo override method in the KanbanPageViewModel class. As of now, we suggest you add the columns inside the KanbanPageViewModel constructor to overcome this reported scenario as the workaround. Please refer to the following code snippet for your reference.Code snippet public KanbanPageViewModel(INavigationService navigationService) : base(navigationService) { var columns = new KanbanColumnCollection(); columns.Add(new KanbanColumn() { Title = "To Do", Categories = new List

Felipe · Answer

Thanks, but that wont work for me, because I have an option to change the Kanban content dynamically. It strange how It happens only in iOS.

Maybe an inportant thing is that making an drag and drop renders the header, and It works with default Header

SaiGanesh Sakthivel · Answer

Hi
Felipe,Thank
you for the update. We will let you know once the reported issue fix is rolled
out. We appreciate the patience until then.Regards,
SaiGanesh Sakthivel

SaiGanesh Sakthivel · Answer

We
regret to inform you that due to the complexity in fixing the issue, we could
not include the fix in this weekly nuget release as promised. We will fix the
reported issue and include it in our upcoming Weekly nuget release which is
planned to roll out on November 15, 2022. We will let you once the release is rolled out and appreciate your patience until then.

SaiGanesh Sakthivel · Answer

#Regarding
HeaderTemplate does not work correctlyWe
have fixed the issue from our end. Due to the testing phase, we have prepared
patch including the fix. Before installing the patch, kindly remove bin and obj
folders from all the projects of solution and clear NuGet cache.Please
refer our following KB document to clear nuget cache.https://www.syncfusion.com/kb/6987/how-to-clear-nuget-cache   Set
Up: https://syncfusion.com/Installs/support/patch/20.3.0.56/1484308/F177730/SyncfusionPatch_20.3.0.56_1484308_11152022012618200_F177730.exe   Custom
Assemblies:
https://syncfusion.com/Installs/support/patch/20.3.0.56/1484308/F177730/SyncfusionPatch_20.3.0.56_1484308_11152022012618200_F177730.zipNuget:
https://syncfusion.com/Installs/support/patch/20.3.0.56/1484308/F177730/SyncfusionNuget_20.3.0.56_1484308_11152022012618200_F177730.zipDisclaimer:    Please
note that we have created this patch for version 20.3.0.47 specifically to
include the issue.We
will include the implemented feature in our upcoming 2022 Volume 4
release which is expected to roll out in Month of December, 2022. We appreciate
your patience until then.  #Regarding
Drag a card it causes an exception in iOS when using the Html text typeWe suspect that the reported scenario is a framework-level issue. We are trying to fix the reported scenario from our end. We will
fix and include the issue fix in our upcoming 2022 Volume 4 release
which is expected to roll out in Month of December, 2022. We appreciate your
patience until then.