How to get the field on focus in blackberry - blackberry

Question

Hello Sir I m making an app in which i got stuck in a problem please help me out ...
in one page i m getting the data from server and displaying that data on the page now i m use Focusable for highlighting them ...now my requirement is that when focus come on any data the it should change the field ie exmple: printing the name on which focus is present ..
following is the code which is showing the data on the page now it is working on field change where i need to click the label field ....
package com.Tally.app;
import com.Tally.screenParams.BankList;
import com.Tally.screenParams.CrDrList;
import com.Tally.screenParams.SearchList;
import net.rim.device.api.system.Display;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.DrawStyle;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Manager;
import net.rim.device.api.ui.MenuItem;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.component.Menu;
import net.rim.device.api.ui.container.HorizontalFieldManager;
import net.rim.device.api.ui.container.VerticalFieldManager;
import net.rim.device.api.ui.decor.BackgroundFactory;
public class LowerCreditors extends VerticalFieldManager implements
FieldChangeListener {
// class Lower extends
static LabelField[] CrDrLabels;
public LowerCreditors() throws Exception {
super(VerticalFieldManager.VERTICAL_SCROLL);
CrDrLabels = new LabelField[CrDrList.VendorNameArr.length];
for (int i = 0; i < CrDrLabels.length; i++) {
final int t = i;
VerticalFieldManager hfm = new VerticalFieldManager(USE_ALL_WIDTH) {
protected void sublayout(int Width, int Height) {
// TODO Auto-generated method stub
super.sublayout(Width, Height);
setPositionChild(getField(0), 15, 0);
setPositionChild(getField(1), Display.getWidth()
- getFont().getAdvance(CrDrList.VendorValArr[t])
- 10, 0);
}
};
CrDrLabels[i] = new LabelField(CrDrList.VendorNameArr[i],
LabelField.FOCUSABLE ) {
public int getPreferredWidth()
{
return 210; // fix width
}
protected boolean navigationClick(int status, int time) {
fieldChanged(this, 0);
return true;
};
};
LabelField Value = new LabelField(CrDrList.VendorValArr[i]);
hfm.add(CrDrLabels[i]);
hfm.add(Value);
add(hfm);
}
}
protected void paintBackground(Graphics g) {
// TODO Auto-generated method stub
g.setColor(0xB8E0B8);
g.fillRect(0, 0, net.rim.device.api.system.Display.getWidth(),
net.rim.device.api.system.Display.getHeight() + 2000);
g.setColor(Color.BLUE);
super.paintBackground(g);
}
protected void paint(Graphics graphics) {
graphics.setColor(0xB8E0B8);
graphics.fillRect(0, 0, Display.getWidth(), 20);
graphics.setColor(Color.BLACK);
super.paint(graphics);
}
protected void sublayout(int maxWidth, int maxHeight) {
// TODO Auto-generated method stub
setExtent(net.rim.device.api.system.Display.getWidth(),
net.rim.device.api.system.Display.getHeight());
super.sublayout(net.rim.device.api.system.Display.getWidth(),
net.rim.device.api.system.Display.getHeight());
}
public void fieldChanged1(Field field, int context) {
// TODO Auto-generated method stub
}
protected boolean abc(int status, int time) {
navigationClick(1, 1);
Dialog.alert("Called......");
return false;
}
public void fieldChanged(Field field, int context) {
// TODO Auto-generated method stub
for (int i = 0; i < CrDrList.VendorNameArr.length; i++) {
if (field == CrDrLabels[i]) {
String LN = CrDrLabels[i].getText();
// SearchList.cname=cn;
CrDrList.cname1 = LN;
LabelField cname1 = CrDrLabels[i];
System.out.println("cnnnnnnnnnnnnnn : "+ cname1);
CrDrList.selLad = CrDrLabels[i];
System.out.println("Creddddddddddddddrrrrrrr"+CrDrList.selLad);
abc(i, i);
}
}
}
}
waitng for reply ..

Answer 1

Couple things you could do:
You can set a FocusChangeListener on each Field and do whatever needs done in the focusChanged() method.
Use getFieldWithFocus() or getLeafWithFocus()
Override each LabelField's onFocus() method
Edit for comment
Overriding onFocus() on your LabelField. Just add this to the other methods you're overriding:
protected void onFocus(int direction) {
//do things that need done when the label gets focus
}
And if it needs to do something when it loses focus
protected void onUnfocus() {
//do things that need done when the label loses focus
}

Answer 2

on navigation movment try this.
protected boolean navigationMovement(int dx, int dy, int status, int time){
System.out.println("field name with focus is...."+getLeafFieldWithFocus());
return super.navigationMovement(dx,dy,status,time);
}