Need XML for this android code

Hello

I need to make apk from this android code… Can I get help..

import android.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private int cartCount=0;
    private int totalPrice=0;


@Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
    @Override
public boolean onCreateOptionsMenu(Menu menu)
    {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
}

    public void AddBaby(View view) {
        TextView editText = (TextView) findViewById(R.id.tvBDPrice);
        int price = Integer.parseInt(editText.getText().toString());
totalPrice = totalPrice + price;

TextView tvCartCount = (TextView) findViewById(R.id.tvTotal);
cartCount = cartCount + 1;
tvCartCount.setText(String.valueOf(cartCount));
}

    public void AddJunior(View view){
        TextView editText = (TextView) findViewById(R.id.tvJDPrice);
        int price = Integer.parseInt(editText.getText().toString());
totalPrice = totalPrice+price;

TextView tvCartCount= (TextView) findViewById(R.id.tvTotal);
cartCount=cartCount+1;
tvCartCount.setText(String.valueOf(cartCount));
}

    public void AddAdult(View view)
    {
        TextView editText = (TextView) findViewById(R.id.tvADPrice);
        int price = Integer.parseInt(editText.getText().toString());
totalPrice = totalPrice+price;

TextView tvCartCount= (TextView) findViewById(R.id.tvTotal);
cartCount=cartCount+1;
tvCartCount.setText(String.valueOf(cartCount));
}
    public void CheckOut(View view)
    {
        if (cartCount==0)
        {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Please add atleast one item to the cart before checkout");
setTitle ("Empty cart");
AlertDialog alert= builder.create();
alert.show();
}
        else
{
            EditText editText= (EditText) findViewById(R.id.etShipping);
String shippingInfo= editText.getText().toString();

AlertDialog.Builder builder= new AlertDialog.Builder(this);
builder.setMessage("You have purched" + cartCount + "Item.nTotal price:"+ totalPrice + ".nShipping Instruction:"+ shippingInfo+ ".");
setTitle("Checkout Sucess");

AlertDialog alert=builder.create();
alert.show();
}
    }
    public int getCartCount(){
        return cartCount;
}
    public void setCartCount(int cartCount)
    {
        this.cartCount=cartCount;
}

    public int getTotalPrice() {
        return totalPrice;
}

    public void setTotalPrice(int totalPrice) {
        this.totalPrice = totalPrice;
}
}