Bug 60543 - Gap between ListView.Header and Toolbar in iOS 11.1
Summary: Gap between ListView.Header and Toolbar in iOS 11.1
Status: CONFIRMED
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.5.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2017-11-06 23:32 UTC by wadalo73
Modified: 2017-11-14 01:25 UTC (History)
3 users (show)

Tags: ios 11, listview, header, toolbar, ac
Is this bug a regression?: ---
Last known good build:


Attachments
broken behavior in ios 11.1 (14.62 KB, image/png)
2017-11-06 23:32 UTC, wadalo73
Details
Expected behavior on iOS <= 10.3 (17.05 KB, image/png)
2017-11-06 23:37 UTC, wadalo73
Details


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Status:
CONFIRMED

Description wadalo73 2017-11-06 23:32:11 UTC
Created attachment 25573 [details]
broken behavior in ios 11.1

On iOS 11.1 in Xamarin Forms 2.4 latest (also on 2.5-pre), there is a gap between the toolbar and the first element, and that element is cut off. On iOS 10.3, the gap is not there. See attached screenshots.

The behavior seems similar to a question on Stack Overflow that was reported as far back as iOS 7, with workarounds provided. https://stackoverflow.com/questions/19111451/ios-7-uitableview-how-to-remove-space-between-navigation-bar-and-first-cell


<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             Title="My App"
             x:Class="MyApp.MainPage">

    <ContentPage.ToolbarItems>
        <ToolbarItem Text="Settings" Command="{Binding OpenSettingsCommand}"></ToolbarItem>
    </ContentPage.ToolbarItems>

    <StackLayout VerticalOptions="Fill" HorizontalOptions="Fill">
        <ListView x:Name="ViewModelsListView" ItemsSource="{Binding ViewModels}" RowHeight="75" Margin="20">
            
        <ListView.Header>
            <TableView HeightRequest="50">
                <TableRoot>
                    <TableSection>
                        <SwitchCell
                            Text="My switch: "
                            IsEnabled="{Binding SwitchBinding}" />
                    </TableSection>
                </TableRoot>
            </TableView>
        </ListView.Header>

... 
       </ListView>
     </StackLayout>
</ContentPage>
Comment 1 wadalo73 2017-11-06 23:37:13 UTC
Created attachment 25574 [details]
Expected behavior on iOS <= 10.3

This is what I expect it to look like. It works in iOS 10.3 and lower.