CustomButton Field not aligning in the center - blackberry

Question

I have created a custom button and i am placing the bunch of Custombuttons in a verticalfieldManager , I have aligned the verticalField Manager in the center. when i am creating a default buttonField then verticalfield Manager is able to align the buttonfield in the center. but when i am assigning custombuttonfield in the verticalField Manager it's not aligning in the center.
here is my custombuttoncode
public CustomButtonField(String label,long style) {
super(style);
this.label = label;
onPicture = Bitmap.getBitmapResource(onPicturePath);
font = getFont();
this.setPadding(5,5, 5, 5);
}
public String getLabel() {
return label;
}
public int getPreferredHeight() {
return onPicture.getHeight();
}
public int getPreferredWidth() {
return onPicture.getWidth();
}
protected void layout(int width , int height) {
setExtent(Math.min(width, Display.getWidth()), Math.min(height,getPreferredHeight()));
}
protected void paint(Graphics graphics) {
int texty =(getHeight()-getFont().getHeight())/2;
if (isFocus()) {
graphics.setColor(Color.BLACK);
graphics.drawBitmap(0, 0, getWidth(), getHeight(),onPicture , 0, 0);
graphics.setColor(Color.WHITE);
graphics.setFont(font);
graphics.drawText(label,0,texty,DrawStyle.ELLIPSIS,getWidth());
} else {
graphics.drawBitmap(0, 0, getWidth(), getHeight(),onPicture , 0, 0);
graphics.setColor(Color.WHITE);
graphics.setFont(font);
graphics.drawText(label,0,texty,DrawStyle.ELLIPSIS,getWidth());
}
}
public boolean isFocusable() {
return true;
}
protected void onFocus(int direction) {
super.onFocus(direction);
invalidate();
}
protected void onUnfocus() {
super.onUnfocus();
invalidate();
}
protected boolean navigationClick(int status, int time) {
fieldChangeNotify(0);
return true;
}
protected boolean keyChar(char character, int status, int time) {
if (character == Keypad.KEY_ENTER) {
fieldChangeNotify(0);
return true;
}
return super.keyChar(character, status, time);
}
}

Answer 1

When you create the button you need to pass the Field.FIELD_HCENTER flag as one of your style flags.
CustomButtonField button = new CustomButtonField("TestLabel", Field.FIELD_HCENTER);