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#if WINDOWS
using Microsoft.UI;
using Microsoft.UI.Windowing;
using Windows.Graphics;
#endif

    const int WindowWidth = 540;
    const int WindowHeight = 1000;
    
        Microsoft.Maui.Handlers.WindowHandler.Mapper.AppendToMapping(nameof(IWindow), (handler, view) =>

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Approaching a Xamarin.Android Bindings Case

1. Investigation

One of the best ways to investigate a problematic Xamarin.Android Binding is to first ensure you have the proper tooling available:

• Diagnostic MSBuild Output Enabled(Instructions)
• Java Decompiler(http://jd.benow.ca/)
• .NET Decompiler(https://www.jetbrains.com/decompiler/)
• Binding SDK Documentation

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using UIEffects = ScrollView.UI.Effects;

[assembly: ResolutionGroupName(Constants.EffectsNamespace)]
[assembly: ExportEffect(typeof(ScrollBarColorEffect), nameof(ScrollBarColorEffect))]

namespace ScrollView.Droid.Effects
{
    public class ScrollBarColorEffect : PlatformEffect
    {
        protected override void OnAttached()

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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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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;

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https://github.com/daniel-luberda/DLToolkit.Forms.Controls/tree/master/FlowListView

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<AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

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<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard1.6</TargetFramework>
    <PackageTargetFallback>$(PackageTargetFallback);portable-win+net45+wp8+win81+wpa8</PackageTargetFallback>
    <DebugType>Full</DebugType>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Xamarin.Forms" Version="2.5.0.121934" />

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public class BotRequest
{
    public string @object { get; set; }
    public List<BotEntry> entry { get; set; }
}

public class BotEntry
{
    public string id { get; set; }
    public long time { get; set; }

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.Linq;
using System.Windows.Input;
using Xamarin.Forms;