如何在MainActivity类中实现对话框布局与网格视图交互

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private GridView gridView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        showDialog();
        setupGridView();
    }

    private void showDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("对话框标题");
        builder.setMessage("对话框消息");

        // 设置对话框布局
        View dialogLayout = getLayoutInflater().inflate(R.layout.dialog_layout, null);
        builder.setView(dialogLayout);

        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 点击确定按钮的操作
                Toast.makeText(MainActivity.this, "点击了确定按钮", Toast.LENGTH_SHORT).show();
            }
        });

        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 点击取消按钮的操作
                Toast.makeText(MainActivity.this, "点击了取消按钮", Toast.LENGTH_SHORT).show();
            }
        });

        AlertDialog dialog = builder.create();
        dialog.show();
    }

    private void setupGridView() {
        gridView = findViewById(R.id.grid_view);

        // 设置网格视图的列数
        gridView.setNumColumns(3);

        // 设置网格视图的适配器
        MyAdapter adapter = new MyAdapter(this);
        gridView.setAdapter(adapter);

        // 设置网格视图的点击事件监听器
        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // 点击网格项的操作
                Toast.makeText(MainActivity.this, "点击了第 " + position + " 个网格项", Toast.LENGTH_SHORT).show();
            }
        });
    }
}