在Xamarin中动态创建按钮

Question

我是Xamarin的新手，以前曾与android一起工作过，现在我正在尝试制作板子类，但似乎无法动态创建按钮。

我正在尝试生成按钮，由于某种原因，我现在在尝试动态制作按钮时遇到了这个问题... 希望你能帮助我：）

处于活动中：

using Android.App;
using Android.OS;
using Android.Support.V7.App;
using Android.Runtime;
using Android.Widget;
using Android.Content;
using Android.Views;

namespace App2
{
    [Activity(Label = "@string/app_name", Theme = "@style/AppTheme", MainLauncher = true)]
    public class MainActivity : AppCompatActivity
    {
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            // Set our view from the "main" layout resource

            Board board = new Board(this);
            SetContentView(Resource.Layout.activity_main);

        }
    }
    class Board
    {
        RelativeLayout layout;
        Context context;
        const int length = 8;
        Button[,] buttons;


        public Board(Context context)
        {
            layout = (context as MainActivity).FindViewById<RelativeLayout>(Resource.Id.root_layout);
            this.context = context;
            Init();
        }
        private void Init()
        {
            //Initializing the board
            buttons = new Button[length, length];
            for (int i = 0; i < length; i++)
            {
                for (int j = 0; j < length; j++)
                {
                    buttons[i, j] = new Button(context);
                    buttons[i, j].Text = (i + j).ToString();
                    buttons[i, j].SetX(50 * i);
                    buttons[i, j].SetY(20 * j);
                    layout.AddView(buttons[i, j]);

                }
            }

        }
    }

}

在 axml 中：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id = "@+id/root_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:theme="@android:style/Theme.NoTitleBar">
</RelativeLayout>

Answer 1

处于活动中：

using Android.App;
using Android.OS;
using Android.Support.V7.App;
using Android.Runtime;
using Android.Widget;
using Android.Content;
using Android.Views;

namespace App2
{
    [Activity(Label = "@string/app_name", Theme = "@style/AppTheme", MainLauncher = true)]
    public class MainActivity : AppCompatActivity
    {
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            // Set our view from the "main" layout resource

            Board board = new Board(this);
            SetContentView(Resource.Layout.activity_main);

        }
    }
    class Board
    {
        RelativeLayout layout;
        Context context;
        const int length = 8;
        Button[,] buttons;


        public Board(Context context)
        {
            layout = (context as MainActivity).FindViewById<RelativeLayout>(Resource.Id.root_layout);
            this.context = context;
            Init();
        }
        private void Init()
        {
            //Initializing the board
            buttons = new Button[length, length];
            for (int i = 0; i < length; i++)
            {
                for (int j = 0; j < length; j++)
                {
                    buttons[i, j] = new Button(context);
                    buttons[i, j].Text = (i + j).ToString();
                    buttons[i, j].SetX(50 * i);
                    buttons[i, j].SetY(20 * j);
                    layout.AddView(buttons[i, j]);

                }
            }

        }
    }

}

在 axml 中：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id = "@+id/root_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:theme="@android:style/Theme.NoTitleBar">
</RelativeLayout>

ps ：我运行了它，可以运行，但是按钮重叠，因此在计算代码中Button的位置时可能会出现问题。