CollectionView on Android does not provide height, width, logical children once loaded, works fine on Windows #14364
Description
Description
CollectionView on Android does not provide height, width, logical children once loaded, works fine on Windows
watch on android
on windows
code:
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
}
private void mycollectionview_Loaded(object sender, EventArgs e)
{
var h1 = mycollectionview.Height;
var h2 = mycollectionview.DesiredSize.Height;
var h3 = mycollectionview.Frame.Height;
var numberOfVisibleItems = ((IElementController)mycollectionview).LogicalChildren.Count;
}
}
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="CollectionViewLoadedBug.MainPage">
<Grid
x:Name="myGrid"
HeightRequest="300"
WidthRequest="200"
BackgroundColor="Gray">
<CollectionView
Loaded="mycollectionview_Loaded"
Grid.Row="2"
x:Name="mycollectionview"
BackgroundColor="Green"
VerticalScrollBarVisibility="Never">
<CollectionView.ItemsLayout>
<LinearItemsLayout
ItemSpacing="0"
Orientation="Vertical"
SnapPointsAlignment="Center"
SnapPointsType="MandatorySingle"/>
</CollectionView.ItemsLayout>
<CollectionView.ItemTemplate>
<DataTemplate >
<Frame
HasShadow="True"
WidthRequest="50"
Padding="0"
BorderColor="Orange"
Background="blue"
CornerRadius="5">
<Label
Text="{Binding}"
FontAttributes="Bold"
Padding="0"
Margin="0"
TextColor="Pink"
FontSize="18"
HorizontalOptions="Center"/>
</Frame>
</DataTemplate>
</CollectionView.ItemTemplate>
<CollectionView.ItemsSource>
<x:Array Type="{x:Type x:Int32}">
<x:Int32>1</x:Int32>
<x:Int32>2</x:Int32>
<x:Int32>3</x:Int32>
<x:Int32>4</x:Int32>
<x:Int32>5</x:Int32>
<x:Int32>6</x:Int32>
<x:Int32>7</x:Int32>
<x:Int32>8</x:Int32>
<x:Int32>9</x:Int32>
<x:Int32>10</x:Int32>
<x:Int32>11</x:Int32>
<x:Int32>12</x:Int32>
<x:Int32>13</x:Int32>
<x:Int32>14</x:Int32>
<x:Int32>15</x:Int32>
<x:Int32>16</x:Int32>
<x:Int32>17</x:Int32>
<x:Int32>18</x:Int32>
<x:Int32>19</x:Int32>
<x:Int32>20</x:Int32>
</x:Array>
</CollectionView.ItemsSource>
</CollectionView>
</Grid>
</ContentPage>
Steps to Reproduce
just copy paste code and run
Link to public reproduction project repository
https://github.com/KWodarczyk/MauiBugs/tree/main/CollectionViewLoadedBug
Version with bug
7.0.100
Last version that worked well
Unknown/Other
Affected platforms
Android
Affected platform versions
Android
Did you find any workaround?
No response
Relevant log output
No response