import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.MenuItem;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
public class Calc extends UiApplication {
public Calc() {
pushScreen(new Operaciones());
}
public static void main(String[] args) {
Calc app = new Calc();
app.enterEventDispatcher();
}
}
final class Operaciones extends MainScreen{
private ObjectChoiceField choiceField;
private int select;
private int a, b, r;
public Operaciones()
{
//Invoke the MainScreen constructor.
super();
a = b = r = 0;
//Add a screen title.
LabelField title = new LabelField("Calculador Básico by PGCG.89",
LabelField.ELLIPSIS |
LabelField.USE_ALL_WIDTH);
setTitle(title);
//Add a text label.
add(new RichTextField("Ingrese dos números"));
//Add a drop-down list with the names of three cities as choice items:
//Los Angeles, Chicago, or New York.
String choices[] = {"Sumar", "Restar", "Multiplicar", "Dividir"};
choiceField = new ObjectChoiceField("Tipo Operación", choices);
add(choiceField);
select = choiceField.getSelectedIndex();
LabelField lf = new LabelField();
BasicEditField N1 = new BasicEditField("N1: ", null, 20,
Field.EDITABLE);
BasicEditField N2 = new BasicEditField("N2: ", null, 20,
Field.EDITABLE);
BasicEditField R = new BasicEditField("R: ", null, 50,
Field.READONLY);
add(lf);
add(new SeparatorField());
add(N1);
add(N2);
add(R);
a = Integer.parseInt(N1.getText());
b = Integer.parseInt(N2.getText());
//Populate fields with data for the city the BlackBerry device user
//selects. The 'select' variable stores the value for the city.
if (select == 0)
{
r = a + b;
lf.setText("La suma es: ");
R.setText(Integer.toString(r));
}
else if (select == 1)
{
r = a - b;
lf.setText("La resta es: ");
R.setText(Integer.toString(r));
}
else if (select == 2)
{
r = a * b;
lf.setText("La multiplicación es: ");
R.setText(Integer.toString(r));
}
else if (select == 3)
{
lf.setText("La división es: ");
if (b != 0){
r = a / b;
R.setText(Integer.toString(r));}
else
R.setText("División entre cero");
}
}
public boolean onClose()
{
Dialog.alert("Goodbye!");
System.exit(0);
return true;
}
//Create a menu item for BlackBerry device users to click to see more
//information about the city they select.
private MenuItem _viewItem = new MenuItem("Seleccionar", 110, 10)
{
public void run()
{
//Store the index of the city the BlackBerry device user selects
select = choiceField.getSelectedIndex();
}
};
//Create a menu item for BlackBerry device users to click to close the
//BlackBerry device application.
private MenuItem _closeItem = new MenuItem("Close", 200000, 10)
{
public void run()
{
onClose();
}
};
//To add menu items to the menu of the BlackBerry device application,
//override the makeMenu method.
protected void makeMenu( Menu menu, int instance )
{
menu.add(_viewItem);
menu.add(_closeItem);
}
}
i cant run this app!.. the error is with the variables integers
Lo siento!