Focus remains in Button when showing Form

Question

Hi all,
I have a Form into which there are Container, GridLayout, Label's, TextField's, and Button's.
Here is the code :
package hello;
import com.sun.lwuit.*;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.events.ActionListener;
import com.sun.lwuit.layouts.GridLayout;
import com.sun.lwuit.plaf.UIManager;
import com.sun.lwuit.util.Resources;
import javax.microedition.midlet.MIDlet;
import java.util.Hashtable;
import javax.microedition.rms.*;
public class HelloMIDlet extends MIDlet implements ActionListener {
private Form form;
private Command ajoutCommand,exitCommand;
private Container panel;
private GridLayout layout;
private Label cin,nom,prenom,adresse;
private TextField cinField,nomField,prenomField,adresseField;
private Button btnAjout, btnExit;
private Hashtable tTheme;
private RecordStore base;
private String dataDB;
public HelloMIDlet() {
public void startApp() {
Display.init(this);
try
Resources r = Resources.open("/resources.res");
tTheme = r.getTheme("Theme");
UIManager.getInstance().setThemeProps(tTheme);
catch (java.io.IOException e)
System.err.println("error reading resource file !");
try {
base = RecordStore.openRecordStore("LWUITBase", true);
catch (RecordStoreException ex) {
ex.printStackTrace();
form = new Form("test");
panel = new Container();
layout = new GridLayout(4,2);
panel.setLayout(layout);
ajoutCommand = new Command("Ajouter",1);
exitCommand = new Command("Exit", 2);
//form.addCommand(ajoutCommand);
//form.addCommand(exitCommand);
cin = new Label("CIN :");
cinField = new TextField();
//cinField.setConstraint(TextArea.NUMERIC);
nom = new Label("Nom :");
nomField = new TextField();
prenom = new Label("Prénom :");
prenomField = new TextField();
adresse = new Label("Adresse :");
adresseField = new TextField();
btnAjout = new Button(ajoutCommand);
btnAjout.addActionListener(this);
btnExit = new Button(exitCommand);
btnExit.addActionListener(this);
panel.addComponent(cin);
panel.addComponent(cinField);
panel.addComponent(nom);
panel.addComponent(nomField);
panel.addComponent(prenom);
panel.addComponent(prenomField);
panel.addComponent(adresse);
panel.addComponent(adresseField);
panel.addComponent(btnExit);
panel.addComponent(btnAjout);
cinField.setFocus(true);
form.addComponent(panel);
form.show();
public void pauseApp() {
public void destroyApp(boolean unconditional) {
notifyDestroyed();
public void actionPerformed(ActionEvent evt) {
if (evt.getCommand() == exitCommand)
destroyApp(false);
else
if (evt.getCommand() == ajoutCommand)
insert();
public synchronized void insert()
String record = cinField.getText() + ";" + nomField.getText() + ";" + prenomField.getText() + ";" + adresseField.getText();
byte[] bytes = record.getBytes();
try {
base.addRecord(bytes, 0, bytes.length);
cinField.setText("");
nomField.setText("");
prenomField.setText("");
adresseField.setText("");
catch (RecordStoreException ex) {
ex.printStackTrace();
RecordEnumeration enumRec = null;
try {
enumRec = base.enumerateRecords(null, null, false);
} catch (RecordStoreNotOpenException ex) {
ex.printStackTrace();
while(enumRec.hasNextElement())
try {
dataDB = new String(enumRec.nextRecord());
} catch (RecordStoreException ex) {
ex.printStackTrace();
Dialog.show("Confirm","data = "+dataDB,"Ok","Cancel");
So when running the application then the cursor is on the Exit button but not on the "cinField" field as I coded.
So how to make the cursor in the "cinField" field after showing the Form ?
Another problem : when I set a NUMERIC constraint to the "cinField" field then when I try to enter a value in it then I cannot type numbers , and I must click the T9 command ! So how to make the application ready to accept numbers in that situation ?
Thank you very much indeed

Answer 1

use button.requestFocus();