Excessive Space In Global Header and Footer on iOS

[SMBened]

Found in version: 0.3.2

I'm currently working on an application that uses Virtual List Views to render lists of dynamic templated objects and for that I have no issues. However, I need to add a "floating button" that occludes the list, but at the same time leave enough space at the bottom of the list view so that the user can scroll all the way to the bottom of the list to see the entirety of the last item without the button covering it.

On Android, I was able to achieve this by adding a Global Header with a single grid row of height 0 and a Global Footer with a single row of the necessary height. This works beautifully.

<vlv:VirtualListView.GlobalHeader>  <!--Footer only appears if there is a header--> 
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="0"/>
        </Grid.RowDefinitions>
        <BoxView Background="Transparent" Grid.Row="0"/>
    </Grid>
          
</vlv:VirtualListView.GlobalHeader>
<vlv:VirtualListView.GlobalFooter>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="80"/>
        </Grid.RowDefinitions>
        <BoxView Background="Transparent" Grid.Row="0"/>
    </Grid>
</vlv:VirtualListView.GlobalFooter>

However, this same code is causing an excessive amount of dead space in the header and footer on iOS. @aritchie

[SMBened]

Possibly related https://github.com/Redth/Maui.VirtualListView/issues/42

[Redth]

Does it still happen if you use say a ContentView instead of a BoxView?

[Redth]

This will be fixed in #43

Though I'd suggest simplifying your controls used...

<vlv:VirtualListView.GlobalHeader>
    <ContentView HeightRequest="1" />
</vlv:VirtualListView.GlobalHeader>
<vlv:VirtualListView.GlobalFooter>
    <ContentView HeightRequest="80" />
</vlv:VirtualListView.GlobalFooter>

There's no need to use BoxView when a simple ContentView will suffice, also the Grid isn't really needed. I see that there needed to be a header to make both show, but this will also be fixed in the PR mentioned.

[Redth]

Fixed by #43