SfChat does not scroll to most recent message when it loads
If the SfChat control's Messages property is bound to an observable collection that contains a large number of messages, it does not scroll to the most recent (last) message when it is first displayed.
It does not scroll to the bottom if the CanAutoScrollToBottom property is set to True, or if it is set to False.
This scenario can be reproduced by creating a view model that creates a collection of twenty messages:
public class ChatViewModel
{
public ChatViewModel()
{
for (var i = 0; i < 20; ++i)
{
Messages.Add(new TextMessage {
DateTime = new DateTime.Now.AddMonths(-1).AddDays(i),
Text = $"Message {i}" });
}
}
public ObservableCollection<object> Messages {get;} = new();
}
And a content page with an SfChat control, that uses the view model:
<ContentPage.BindingContext>
<local:ChatViewModel/>
</ContentPage.BindingContext>
<ContentPage.Content>
<StackLayout VerticalOptions="FillAndExpand">
<Label>SyncFusion Xamarin chat message loading</Label>
<sfChat:SfChat CanAutoScrollToBottom="True" Messages="{Binding Messages}"/>
</StackLayout>
</ContentPage.Content>
The SfChat control displays the first, and oldest message, and remains scrolled to the top.
If newer messages are added to the observable collection later, the control will scroll to the newest message, as expected.
The demo was built using SyncFusion.Xamarin.SfChat 20.1.0.58, Xamarin.Forms 5.0.0.2291, and run in the iOS Simulator on an iPhone 8 Plus on iOS 15.4.
This may be the same issue as was reported in this post, however that post was specifically referring to image and video messages. I believe this is occurring for all message types, as demonstrated by the code included in this post.
Hi Gustavo,
We have checked the scenario "SfChat does not scroll to recent message while loading" with the most recent weekly nuget version 20.2.0.38 and found that it works fine in our environment. Please ensure that you clear all bin and obj files in your projects after updating the nuget version to 20.2.0.38. We have attached a sample which we used to check the reported scenario for you reference. Please have a look at this sample and let us know if missed any customization you have done in your application or revert us with SfChat related code snippets and illustration video or image. It will be more helpful for us to provide timely solutions.
Reference Output with nuget version 20.2.0.38:
@Anthony - We are glad to know that the reported problem has been resolved at your end. We have updated the release notes when publishing our NuGet package. But sometimes it takes time to update and get refreshed in live.
Regards,
Suja
Attachment: GettingStarted_4_1c9a1f69.zip
