我正在使用 Xamarin 的 CollectionView 和 Stacklayout,我正在尝试以集合视图的形式显示来自不同来源的项目列表。但是,下面显示的代码的输出是我没想到的。第一个集合视图的结果显示在一个小窗口中,并且可以通过滚动读取所有剩余项目。但是,我想在不使用滚动条的情况下全部显示它们,如果在代码中添加更多集合视图,同样应该可以工作。我在这里有什么遗漏吗?
<?xml version="1.0" encoding="UTF-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
Title="Arhoo"
x:Class="Arhoo.Pages.MainFeedPage">
<StackLayout>
<StackLayout VerticalOptions="FillAndExpand">
<CollectionView x:Name="ItemsListView"
ItemsSource="{Binding Hotels}"
VerticalOptions="FillAndExpand" Margin="10" Visual="Material">
<CollectionView.Header>
<StackLayout BackgroundColor="LightGray" HeightRequest="50" >
<Label Visual="Material" Text="Hotels" FontSize="Medium" FontAttributes="Bold" />
</StackLayout>
</CollectionView.Header>
<CollectionView.ItemsLayout>
<GridItemsLayout Orientation="Vertical" Span="2"/>
</CollectionView.ItemsLayout>
<CollectionView.EmptyView>
<StackLayout>
<Label HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand" Text="Loading Hotels"/>
</StackLayout>
</CollectionView.EmptyView>
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout Visual="Material">
<ContentView Padding="10">
<Frame HasShadow="false" OutlineColor="#2f2f2f" Padding="0" CornerRadius="2">
<Grid BackgroundColor="#f2f2f2" MinimumHeightRequest="400">
<Image Source="{Binding Image}" Aspect="AspectFill"/>
<BoxView BackgroundColor="#000000" Opacity="0.4"/>
<Label Text="{Binding Text}" Margin="15" TextColor="White" VerticalOptions="End"
VerticalTextAlignment="End" LineBreakMode="NoWrap" FontSize="18" />
</Grid>
</Frame>
</ContentView>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</StackLayout>
<StackLayout VerticalOptions="FillAndExpand">
<CollectionView x:Name="TOsListView"
ItemsSource="{Binding TourOperators}"
VerticalOptions="FillAndExpand" >
<CollectionView.Header>
<StackLayout BackgroundColor="LightGray" HeightRequest="20" >
<Label Margin="10,0,0,0" Text="Tour Operators" FontSize="Medium" FontAttributes="Bold" />
</StackLayout>
</CollectionView.Header>
<CollectionView.ItemsLayout>
<GridItemsLayout
Orientation="Vertical"
Span="2"/>
</CollectionView.ItemsLayout>
<CollectionView.EmptyView>
<StackLayout>
<Label
HorizontalOptions="CenterAndExpand"
VerticalOptions="CenterAndExpand"
Text="Loading TOs"/>
</StackLayout>
</CollectionView.EmptyView>
<CollectionView.ItemTemplate>
<DataTemplate>
<ContentView Padding="10" >
<Frame HasShadow="false"
OutlineColor="#2f2f2f"
Padding="0"
CornerRadius="2">
<Grid BackgroundColor="#f2f2f2">
<Image Source="{Binding Image}"
Aspect="AspectFill"/>
<BoxView BackgroundColor="#000000"
Opacity="0.4"/>
<Label Text="{Binding Text}"
Margin="15"
TextColor="White"
VerticalOptions="End"
VerticalTextAlignment="End"
LineBreakMode="NoWrap"
FontSize="18" />
</Grid>
</Frame>
</ContentView>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</StackLayout>
</StackLayout>
</ContentPage>