Salve… eu procurei esse erro em város e lugares e como não consegui nada decidi postar aqui… o código que eu crei para o celular é esse:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.*;
public class principal extends MIDlet implements CommandListener {
private boolean midletPaused = false;
double n1, n2, n3;
//<editor-fold defaultstate="collapsed" desc=" Generated Fields ">
private Form formInserir;
private TextField campo1;
private TextField campo3;
private TextField campo2;
private Alert alert;
private Command okCommand;
private Command exitCommand;
private Command okCommand1;
//</editor-fold>
public principal() {
}
//<editor-fold defaultstate="collapsed" desc=" Generated Methods ">
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Method: initialize ">
/**
* Initializes the application.
* It is called only once when the MIDlet is started. The method is called before the <code>startMIDlet</code> method.
*/
private void initialize() {
// write pre-initialize user code here
// write post-initialize user code here
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Method: startMIDlet ">
/**
* Performs an action assigned to the Mobile Device - MIDlet Started point.
*/
public void startMIDlet() {
// write pre-action user code here
switchDisplayable(null, getFormInserir());
// write post-action user code here
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Method: resumeMIDlet ">
/**
* Performs an action assigned to the Mobile Device - MIDlet Resumed point.
*/
public void resumeMIDlet() {
// write pre-action user code here
// write post-action user code here
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Method: switchDisplayable ">
/**
* Switches a current displayable in a display. The <code>display</code> instance is taken from <code>getDisplay</code> method. This method is used by all actions in the design for switching displayable.
* @param alert the Alert which is temporarily set to the display; if <code>null</code>, then <code>nextDisplayable</code> is set immediately
* @param nextDisplayable the Displayable to be set
*/
public void switchDisplayable(Alert alert, Displayable nextDisplayable) {
// write pre-switch user code here
Display display = getDisplay();
if (alert == null) {
display.setCurrent(nextDisplayable);
} else {
display.setCurrent(alert, nextDisplayable);
}
// write post-switch user code here
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: formInserir ">
/**
* Returns an initiliazed instance of formInserir component.
* @return the initialized component instance
*/
public Form getFormInserir() {
if (formInserir == null) {
// write pre-init user code here
formInserir = new Form("Inserir Contas", new Item[]{getCampo1(), getCampo2(), getCampo3()});
formInserir.addCommand(getOkCommand());
formInserir.addCommand(getExitCommand());
formInserir.setCommandListener(this);
// write post-init user code here
}
return formInserir;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: campo1 ">
/**
* Returns an initiliazed instance of campo1 component.
* @return the initialized component instance
*/
public TextField getCampo1() {
if (campo1 == null) {
// write pre-init user code here
campo1 = new TextField("Luz", null, 32, TextField.ANY);
// write post-init user code here
}
return campo1;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: campo2 ">
/**
* Returns an initiliazed instance of campo2 component.
* @return the initialized component instance
*/
public TextField getCampo2() {
if (campo2 == null) {
// write pre-init user code here
campo2 = new TextField("Agua", null, 32, TextField.ANY);
// write post-init user code here
}
return campo2;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: campo3 ">
/**
* Returns an initiliazed instance of campo3 component.
* @return the initialized component instance
*/
public TextField getCampo3() {
if (campo3 == null) {
// write pre-init user code here
campo3 = new TextField("Cartao", null, 32, TextField.ANY);
// write post-init user code here
}
return campo3;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Method: commandAction for Displayables ">
/**
* Called by a system to indicated that a command has been invoked on a particular displayable.
* @param command the Command that was invoked
* @param displayable the Displayable where the command was invoked
*/
public void commandAction(Command command, Displayable displayable) {
// write pre-action user code here
if (displayable == alert) {
if (command == okCommand1) {
// write pre-action user code here
switchDisplayable(null, getFormInserir());
// write post-action user code here
}
} else if (displayable == formInserir) {
if (command == exitCommand) {
// write pre-action user code here
exitMIDlet();
// write post-action user code here
} else if (command == okCommand) {
// write pre-action user code here
switchDisplayable(null, getAlert());
// write post-action user code here
}
}
// write post-action user code here
//Aqui a parte da conversao
String c1;
c1 = getCampo1().getString();
n1 = (Double.parseDouble(c1));
String c2;
c2 = getCampo2().getString();
n2 = (Double.parseDouble(c2));
String c3;
c3 = getCampo3().getString();
//float valorExtra = (Float.parseFloat(vlrExtra));
n3 = (Double.parseDouble(c3));
double res = n1 + n2 + n3;
String str = Double.toString(res);
System.out.println(str);
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: alert ">
/**
* Returns an initiliazed instance of alert component.
* @return the initialized component instance
*/
public Alert getAlert() {
if (alert == null) {
// write pre-init user code here
alert = new Alert("Total", "Calculo OK", null, null);
alert.addCommand(getOkCommand1());
alert.setCommandListener(this);
alert.setTimeout(Alert.FOREVER);
// write post-init user code here
campo1.setString(" ");
campo2.setString(" ");
campo3.setString(" ");
}
return alert;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: okCommand ">
/**
* Returns an initiliazed instance of okCommand component.
* @return the initialized component instance
*/
public Command getOkCommand() {
if (okCommand == null) {
// write pre-init user code here
okCommand = new Command("Calcular", Command.OK, 0);
// write post-init user code here
}
return okCommand;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: exitCommand ">
/**
* Returns an initiliazed instance of exitCommand component.
* @return the initialized component instance
*/
public Command getExitCommand() {
if (exitCommand == null) {
// write pre-init user code here
exitCommand = new Command("Sair", Command.EXIT, 0);
// write post-init user code here
}
return exitCommand;
}
//</editor-fold>
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: okCommand1 ">
/**
* Returns an initiliazed instance of okCommand1 component.
* @return the initialized component instance
*/
public Command getOkCommand1() {
if (okCommand1 == null) {
// write pre-init user code here
okCommand1 = new Command("Salvo", Command.OK, 0);
// write post-init user code here
}
return okCommand1;
}
//</editor-fold>
/**
* Returns a display instance.
* @return the display instance.
*/
public Display getDisplay() {
return Display.getDisplay(this);
}
/**
* Exits MIDlet.
*/
public void exitMIDlet() {
switchDisplayable(null, null);
destroyApp(true);
notifyDestroyed();
}
/**
* Called when MIDlet is started.
* Checks whether the MIDlet have been already started and initialize/starts or resumes the MIDlet.
*/
public void startApp() {
if (midletPaused) {
resumeMIDlet();
} else {
initialize();
startMIDlet();
}
midletPaused = false;
}
/**
* Called when MIDlet is paused.
*/
public void pauseApp() {
midletPaused = true;
}
/**
* Called to signal the MIDlet to terminate.
* @param unconditional if true, then the MIDlet has to be unconditionally terminated and all resources has to be released.
*/
public void destroyApp(boolean unconditional) {
}
}e o erro que dá é esse:
[quote]
TRACE: <at java.lang.NumberFormatException>, Exception caught in Display class
java.lang.NumberFormatException
at java.lang.FloatingDecimal.readJavaFormatString(), bci=24
at java.lang.Double.parseDouble(Double.java:510)
at principal.commandAction(principal.java:179)
at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46
at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74
at com.sun.midp.chameleon.layers.SoftButtonLayer.commandSelected(), bci=11
at com.sun.midp.chameleon.layers.MenuLayer.keyInput(), bci=436
at com.sun.midp.chameleon.CWindow.keyInput(), bci=38
at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17
at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277
at com.sun.midp.events.EventQueue.run(), bci=179
at java.lang.Thread.run(Thread.java:662)
TRACE: <at java.lang.NumberFormatException>, Exception caught in Display class
java.lang.NumberFormatException
at java.lang.FloatingDecimal.readJavaFormatString(), bci=24
at java.lang.Double.parseDouble(Double.java:510)
at principal.commandAction(principal.java:179)
at javax.microedition.lcdui.Alert$1.commandAction(), bci=78
at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46
at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74
at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37
at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36
at com.sun.midp.chameleon.CWindow.keyInput(), bci=38
at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17
at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277
at com.sun.midp.events.EventQueue.run(), bci=179
at java.lang.Thread.run(Thread.java:662)
TRACE: <at java.lang.NumberFormatException>, Exception caught in Display class
java.lang.NumberFormatException
at java.lang.FloatingDecimal.readJavaFormatString(), bci=24
at java.lang.Double.parseDouble(Double.java:510)
at principal.commandAction(principal.java:179)
at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46
at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74
at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37
at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36
at com.sun.midp.chameleon.CWindow.keyInput(), bci=38
at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17
at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277
at com.sun.midp.events.EventQueue.run(), bci=179
at java.lang.Thread.run(Thread.java:662)[/quote]
O que será que pode ser? já que ele nem chega a mostrar no console do netbeans (mas se colocar essa conversão num arquivo java simples - J2SDK - vai!)…
Obrigado desde já.
Ricardo