ตอนที่ 8 : Xamarin กับ Android การใช้ SetContentView() ควบคุมการแสดง XML Layout (C#)

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

namespace myFirstApps
{
    [Activity(Label = "myFirstApps", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            ShowLayout1();

        }

        // Layout 1 (Main.axml)
        private void ShowLayout1()
        {
            SetContentView(Resource.Layout.Main);
            Button btn1 = FindViewById<Button>(Resource.Id.btn1);
            btn1.Click += delegate
            {
                ShowLayout2();
            };
        }

        // Layout 2 (Main2.axml)
        private void ShowLayout2()
        {
            SetContentView(Resource.Layout.Main2);
            Button btn2 = FindViewById<Button>(Resource.Id.btn2);
            btn2.Click += delegate
            {
                ShowLayout3();
            };
        }

        // Layout 3 (Main3.axml)
        private void ShowLayout3()
        {
            SetContentView(Resource.Layout.Main3);
            Button btn3 = FindViewById<Button>(Resource.Id.btn3);
            btn3.Click += delegate
            {
                ShowLayout1();
            };
        }

    }
}