Clever Geek Handbook

Departure behind the application panel

If you want your app to expand to full screen (including status bar and app bar), you need to do the following:

var applicationView = Windows.UI.ViewManagement.ApplicationView.GetForCurrentView();
applicationView.SetDesiredBoundsMode(Windows.UI.ViewManagement.ApplicationViewBoundsMode.UseCoreWindow);

Then, if you want to have a popup in your app bar or elsewhere in your app, they'll appear behind the app bar:

    <Page.BottomAppBar>
        <CommandBar>
            <AppBarButton Icon="Preview" Label="Preview">
                <AppBarButton.Flyout>
                    <MenuFlyout>
                        <MenuFlyoutItem Text="Fit width" />
                        <MenuFlyoutItem Text="Fit height" />
                        <MenuFlyoutItem Text="Fit page" />
                    </MenuFlyout>
                </AppBarButton.Flyout>
            </AppBarButton>
        </CommandBar>
    </Page.BottomAppBar>

Result:

http://i.stack.imgur.com/oWAj9.png

Same as list item popups. They will be displayed behind the app bar:

enter image description here

How do I display pop-ups over the app bar?

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1 answer


I cannot solve my problem (or someone who can help). So I did it like this, in case it might help someone:

<Page.BottomAppBar>
        <CommandBar>
            <AppBarButton Icon="Preview" Label="Preview">
                <AppBarButton.Flyout>
                    <MenuFlyout Opened="MenuFlyout_Opened" Closed="MenuFlyout_Closed">
                        <MenuFlyoutItem Text="Fit width" />
                        <MenuFlyoutItem Text="Fit height" />
                        <MenuFlyoutItem Text="Fit page" />
                    </MenuFlyout>
                </AppBarButton.Flyout>
            </AppBarButton>
        </CommandBar>
    </Page.BottomAppBar>

private void MenuFlyout_Opened(object sender, object e)
{
  BottomAppBar.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}

private void MenuFlyout_Closed(object sender, object e)
{
  BottomAppBar.Visibility = Windows.UI.Xaml.Visibility.Visible;
}


Now my popup appears completely as there is no more application bar. For mvvm list view items, I did this in behavior:

<DataTemplate x:Key="MvvmItemTemplate">
        <Grid>

            <i:Interaction.Behaviors>
                <icore:EventTriggerBehavior EventName="Holding">
                    <local:OpenFlyoutAction />
                </icore:EventTriggerBehavior>
            </i:Interaction.Behaviors>

            <FlyoutBase.AttachedFlyout>
                <MenuFlyout>
                    <MenuFlyoutItem ..... Command="{Binding MarkRead}" />
                    <MenuFlyoutItem ..... Command="{Binding MarkUnread}" />
                    <MenuFlyoutItem ..... Command="{Binding PinToStart}" />
                </MenuFlyout>
            </FlyoutBase.AttachedFlyout>
        </Grid>
    </DataTemplate>




public class OpenFlyoutAction : DependencyObject, IAction
    {
        public object Execute(object sender, object parameter)
        {
            // Show menu
            FlyoutBase.ShowAttachedFlyout((FrameworkElement)sender);

            // sometimes the appbar is stuck behind the appbar, so hide the appbar
            (sender as FrameworkElement).GetFirstAncestorOfType<Page>().BottomAppBar.Visibility = Visibility.Collapsed;

            // show the appbar again when flyout is closed
            var flyout = FlyoutBase.GetAttachedFlyout((FrameworkElement)sender);
            EventHandler<object> showBar = null;
            showBar = delegate (object s, object e)
            {
                (sender as FrameworkElement).GetFirstAncestorOfType<Page>().BottomAppBar.Visibility = Visibility.Visible;
                // unsubscribe handler:
                flyout.Closed -= showBar;
            };
            flyout.Closed += showBar;

            return null;
        }
    }
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