AbsoluteLayout.LayoutBounds position using Xamarin.form Xaml

Question

In Xamarin.form Xaml :When I am giving AbsoulteLayout layoutBounds(.5,.5,.5,.5) its coming on center but not for ios... and If I'm using (.75,.75,.5,.5) its coming on center for ios not for android in Xamarin form xaml page.....How to have same layoutBounds for both ios and android

Given Example:

<AbsoluteLayout BackgroundColor="#99000000"
                    HorizontalOptions="FillAndExpand"                   
                    IsVisible="{Binding xyz}"
                    VerticalOptions="FillAndExpand">

      <AbsoluteLayout x:Name="xyz"
                     AbsoluteLayout.LayoutBounds="0.5, 0.5, 0.5, 0.5"
                     AbsoluteLayout.LayoutFlags="All"
                       BackgroundColor="Transparent"
                       HorizontalOptions="CenterAndExpand"
                       VerticalOptions="CenterAndExpand" />
</AbsoluteLayout>

Answer 1

Thanks for replies. I have resolved the problem related to center alignment of in absolute layout, hope this is helpful

    <AbsoluteLayout Padding="0" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"    IsVisible="{Binding ShowPopup}">
        <BoxView Color="#99000000" AbsoluteLayout.LayoutBounds="0, 0, 1, 1" AbsoluteLayout.LayoutFlags="All" />
        <StackLayout x:Name="Popup" Padding="6" Orientation="Horizontal" BackgroundColor="Transparent" AbsoluteLayout.LayoutBounds="0.5, 0.5, -1, -1" AbsoluteLayout.LayoutFlags="PositionProportional">
        </StackLayout>
    </AbsoluteLayout>

Answer 2

You can use OnPlatform to have different values on different platforms.

Eg:

<ContentPage.Padding>
    <OnPlatform x:TypeArguments="Thickness">
      <OnPlatform.iOS>
        0, 20, 0, 0
      </OnPlatform.iOS>
      <OnPlatform.Android>
        0, 0, 0, 0
      </OnPlatform.Android>
      <OnPlatform.WinPhone>
        0, 0, 0, 0
      </OnPlatform.WinPhone>
    </OnPlatform>
  </ContentPage.Padding>

Modifying your code (untested) :

<AbsoluteLayout BackgroundColor="#99000000"
                    HorizontalOptions="FillAndExpand"                   
                    IsVisible="{Binding xyz}"
                    VerticalOptions="FillAndExpand">

      <AbsoluteLayout x:Name="xyz"                     
                       AbsoluteLayout.LayoutFlags="All"
                       BackgroundColor="Transparent"
                       HorizontalOptions="CenterAndExpand"
                       VerticalOptions="CenterAndExpand" >
            <AbsoluteLayout.LayoutBounds>
                     <OnPlatform x:TypeArguments="Rectangle">
                        <OnPlatform.iOS>
                              0.75, 0.75, 0.5, 0.5
                        </OnPlatform.iOS>
                        <OnPlatform.Android>
                              0.5, 0.5, 0.5, 0.5
                        </OnPlatform.Android>
                        <OnPlatform.WinPhone>
                              0, 0, 0, 0
                        </OnPlatform.WinPhone>
                     </OnPlatform>
            </AbsoluteLayout.LayoutBounds>
      </AbsoluteLayout>
</AbsoluteLayout>