Xamarin表单:CollectionView在ios中不起作用 [英] Xamarin Forms: CollectionView is not working in ios

问题描述

我将CollectionView用于水平列表视图.它在android中工作正常，但在ios中，项目显示在另一个顶部.在下面附加屏幕截图:

I am using CollectionView for the horizontal listview. It is working fine in android but in ios, the items are showing on one top of another. Attaching a screenshot below:

XAML

<CollectionView 
             HeightRequest="30"
             SelectionMode="Single"
             SelectionChanged="ItemTapped"
        ItemsSource="{Binding Items}"
             x:Name="collectionview"
             ItemsLayout="HorizontalList">
             <CollectionView.ItemTemplate>
                   <DataTemplate>
                          <StackLayout Margin="5">
                                  <Label
                                       TextColor="Black"
                                       FontSize="Large"
                                       HorizontalTextAlignment="Center"
                                       VerticalTextAlignment="Center"
                                       Text="{Binding title}"/>
                             </StackLayout>
                        </DataTemplate>
                 </CollectionView.ItemTemplate>
          </CollectionView>

Xaml.cs

public async void ItemTapped(object sender, SelectionChangedEventArgs e)
        {
            var selectedItem = (e.CurrentSelection.FirstOrDefault() as MyModel);
            if (selectedItem != null)
            {
                //Do action
            }
        }

在调用Forms.Init之前，在iOS的AppDelegate类和Android的MainActivity类中添加以下代码:

Add below code in AppDelegate class on iOS and MainActivity class on Android, before calling Forms.Init:

Forms.SetFlags("CollectionView_Experimental");

我在IOS中缺少什么吗?

Am I missing something in IOS?

推荐答案

似乎是Xamarin.Forms的现有问题.解决方法是，您可以将Xamarin.Forms的版本更新为4.4 pre2.

It seems an existing issue of Xamarin.Forms . As workaround you can update the version of Xamarin.Forms to 4.4 pre2 .

您可以检查Xamarin.forms 发行说明.

And you can check the Xamarin.forms release notes .

这篇关于Xamarin表单:CollectionView在ios中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！