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[assembly: ExportRenderer(typeof(Sample.CustomBoxView), typeof(SABoxViewRenderer))]
namespace Sample.Droid.UIRenderers
{
    public class SABoxViewRenderer : BoxRenderer
    {
        public SABoxViewRenderer(Android.Content.Context context) : base(context)
        {

        }
        protected override void OnElementChanged(ElementChangedEventArgs<BoxView> e)

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 /*
         how to use it 
          you have to design your xaml to fit your need 
          EX:
          <ColumnDefinition Width="{UIExtensions:UIDirection Type=GridLength,LTR=auto ,RTL=*}" />
           HorizontalTextAlignment="{UIExtensions:UIDirection Type=TextAlignment,LTR=Start,RTL=End}"
           HorizontalOptions="{UIExtensions:UIDirection Type=LayoutOption, LTR=Start, RTL=End}"
         */

using System;

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 /*
this class will help you to have bindable children with different sizes for the stacklayout with scrollview 
in you xaml add 
    <UIControls:SAStackLayout ItemsSource="{Binding YourDataSource}"  Orientation="Horizontal">
                            <DataTemplate>
                                <Grid>
                                    <Label Text="{Binding Name}" Margin="15,0" HorizontalOptions="Center" VerticalOptions="Center"    FontSize="Small"  VerticalTextAlignment="Center" HorizontalTextAlignment="Center" TextColor="White"/>
                                </Grid>
                            </DataTemplate>
   </UIControls:SAStackLayout>