help using sflistview

[Jose Augusto]

i have this error.

this is the xaml

SelectionMode="Multiple"

SelectionGesture="Tap"

SelectionBackgroundColor="Gold"

ItemsSource="{Binding BookInfo}"

SelectedItem="{Binding SelectedItem}">

and the viewmodel 

public ObservableCollection SelectedItem

{

get => _selectedItem;

set => SetProperty(ref _selectedItem, value);

}

[Lakshmi Natarajan]

Hi Jose, 

 

Thank you for using Syncfusion products. 

 

We have checked the reported query “NullReference exception occurs in SfListView” from our side.  We have analyzed the provided code snippets and we would like to inform you that SelectedItem is used to programmatically select the ListViewItem when SelectionMode is Single. Could you please bind the observable collection to the SfListView.SelectedItems property and let us know the issue resolved or not? 

 

Please refer to our documentation regarding the same from the following link, 

UG link: https://help.syncfusion.com/xamarin/listview/selection#programmatic-selection 

 

Also, if issue reproduced in iOS platform kindly ensure the SfListViewRenderer is initialized in the AppDelegate class. Please refer to our documentation from the following link, 

UG link: https://help.syncfusion.com/xamarin/listview/getting-started#launching-the-sflistview-on-each-platform 

 

If you still facing the same issue, please revert us back with the following details which would be helpful for us to check on it and provide you the solution as soon as possible, 

• Share ListView XAML code snippets
• Share issue replication procedure
• Share the stack trace of the crash
• Share issue reproducing platform and device configuration details
• Share Syncfusion and Xamarin.Forms version

 

Regards, 

Lakshmi Natarajan