Mini-calculadora v0.2 by xerpi

package pongdroid.com;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.MultiAutoCompleteTextView;
import android.widget.TextView;

import com.minicalculadora.R;

public class PongDroidActivity extends Activity implements OnClickListener {
    private Button sumar,restar,multiplicar,dividir,buttonIva;
    private TextView resultado,textIva;
    private MultiAutoCompleteTextView numberone,numbertwo,precio;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            sumar = (Button) findViewById(R.id.buttonSumar);
            restar = (Button) findViewById(R.id.buttonRestar);
            multiplicar = (Button) findViewById(R.id.buttonMultiplicar);
            dividir = (Button) findViewById(R.id.buttonDividir);
            buttonIva = (Button) findViewById(R.id.buttonIva);
            resultado = (TextView) findViewById(R.id.resultado);
            textIva = (TextView) findViewById(R.id.textIva);
            numberone = (MultiAutoCompleteTextView) findViewById(R.id.numberone);
            precio = (MultiAutoCompleteTextView) findViewById(R.id.precio);
            numbertwo = (MultiAutoCompleteTextView) findViewById(R.id.numbertwo);
            sumar.setOnClickListener(this);
            restar.setOnClickListener(this);
            multiplicar.setOnClickListener(this);
            dividir.setOnClickListener(this);
            buttonIva.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        Button view = (Button) v;
        double result = 0;
        if (view.getId() == R.id.buttonIva){
            result = calcIVA(Double.valueOf(precio.getText().toString()));
            textIva.setText(String.valueOf(result));
        } else{
                double num1 = 0,num2 = 0;
                num1 = Double.valueOf(numberone.getText().toString());
                num2 = Double.valueOf(numbertwo.getText().toString());
                 switch(view.getId()){
                  case R.id.buttonSumar:
                        result = num1+num2;
                        break;
                  case R.id.buttonRestar:
                        result = num1-num2;
                        break;
                  case R.id.buttonMultiplicar:
                        result = num1*num2;
                        break;
                  case R.id.buttonDividir:
                        result = num1/num2;
                        break;
                  }
                 resultado.setText(String.valueOf(result));
        }
    }

    public double calcIVA(double price) {
        return (price+(price*0.18));
    }


}