Label caption is not set in label background center - blackberry

Question

I am working on a logic where I have to align the label caption in vertically center but it's not working.
I have tried to set text padding but the whole label with background is shifting.Is there any way to solve this.
Here is my code:
final Bitmap tabBackGroundImage1 = Bitmap.getBitmapResource("box_img.png");
homeContentManager.setBorder( BorderFactory.createBitmapBorder(
new XYEdges(16,16,16,16), tabBackGroundImage));
//homeContentManager.setBorder(roundedBourder);
//HOME SCREEN HORIZONTAL MANAGER
buddiesLabel=new LabelField("Buddies");
_bitmap = EncodedImage.getEncodedImageResource("buddies.png");
final BitmapField buddiesBmp = new BitmapField(Constant.sizePic(_bitmap,
_bitmap.getHeight(), _bitmap.getWidth()));
buddiesBmp.setMargin(3,5,0,5);
if(BuddyListField.onlineBuddyCount < 1000) {
buddyCount=new LabelField(" "+BuddyListField.onlineBuddyCount+" "){
/*public void setText(String text,int offset,int length){
text = String.valueOf(BuddyListField.onlineBuddyCount);
offset = 200;
length = 5;
super.setText(text, offset, length);
}*/
public int getPreferredHeight() {
return tabBackGroundImage1.getHeight();
}
public int getPreferredWidth() {
return tabBackGroundImage1.getWidth();
}
protected void layout(int width, int height) {
super.layout(width, height);
setExtent(Math.min(width, tabBackGroundImage1.getWidth()), Math.min(height, tabBackGroundImage1.getHeight()));
}
protected void paint(Graphics graphics) {
int deviceWidth=net.rim.device.api.system.Display.getWidth();
int deviceHeight=net.rim.device.api.system.Display.getHeight();
graphics.clear();
graphics.drawBitmap(0, 0, deviceWidth,
deviceHeight, tabBackGroundImage1, 0, 0);
super.paint(graphics);
}
};
This is the output:
But I need to set zero to vertically center in background.

Answer 1

Try like this
protected void paint(Graphics graphics) {
int deviceWidth=net.rim.device.api.system.Display.getWidth();
int deviceHeight=net.rim.device.api.system.Display.getHeight();
graphics.clear();
graphics.drawBitmap(0, 0, deviceWidth,
deviceHeight, tabBackGroundImage1, 0, 0);
graphics.drawText((getPreferredWidth()-getText())/2,(getPreferredHeight()-graphics.getFont().getHeight())/2,getText);
// super.paint(graphics);
}