Blackberry custom ButtonField with icon and text - blackberry

Question

How would I go about creating a custom ButtonField that includes an icon? I have found several different sources for a ButtonField with a custom background Bitmap, but I want to have a button with an Icon and text under it. I can not find anyt informaiton about this, maybe someone here could help me out?
Cheers

Answer 1

Try this
package com.MYAPP.controls;
import com.MYAPP.bll.Log;
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.system.Characters;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.Graphics;
public class ButtonControl extends Field {
private Bitmap selectedBitmap;
private Bitmap unSelectedBitmap;
private String _label;
protected boolean focus = false;
protected int bWidth = 0;
protected int bHeight = 0;
int padding = 0;
Font font=Font.getDefault();
public ButtonControl(String icon, String label) {
super(Field.FOCUSABLE);
_label = label;
try {
selectedBitmap = Bitmap.getBitmapResource(icon + "_focus.png");
unSelectedBitmap =Bitmap.getBitmapResource(icon + ".png");
padding = 0;
} catch (Exception ex) {
Log.Error(ex, "Cannot load icon {" + icon + "}");
}
bWidth = selectedBitmap.getWidth();
bHeight = selectedBitmap.getHeight();
}
protected void onFocus(int direction) {
focus = true;
invalidate();
}
protected void onUnfocus() {
focus = false;
invalidate();
}
public void drawFocus(Graphics g, boolean on) {
// do nothing... this is handled in paint...
}
protected int moveFocus(int amount, int status, int time) {
// This ensures background is redrawn properly if this control is
// the first or last in a series (eliminate white background issue)
invalidate();
return super.moveFocus(amount, status, time);
}
protected void moveFocus(int x, int y, int status, int time) {
// This ensures background is redrawn properly if this control is
// the first or last in a series (eliminate white background issue)
invalidate();
super.moveFocus(x, y, status, time);
}
int _labelWidth;
int posbitmapX=0;
int x=0;
int y = 0;
protected void paint(Graphics g) {
int oldColor = g.getColor();
Font oldFont = g.getFont();
g.setFont(getTextFont());
x = (getWidth() - bWidth) / 2;
if (focus) {
g.setColor(Color.WHITE);
g.drawBitmap(x, y, bWidth, bHeight, selectedBitmap, 0, 0);
} else {
g.setColor(Color.BLACK);
g.drawBitmap(x, y, bWidth, bHeight, unSelectedBitmap, 0, 0);
}
g.setFont(getTextFont());
_labelWidth = getTextFont().getAdvance(_label);
g.drawText(_label, 0, bHeight + 2, Graphics.HCENTER, getWidth());
g.setColor(oldColor);
g.setFont(oldFont);
}
protected void layout(int width, int height) {
setExtent(getPreferredWidth(), getPreferredHeight());
}
private Font getTextFont() {
return font;
}
public int getPreferredWidth() {
return selectedBitmap.getWidth();
}
public int getPreferredHeight() {
return (bHeight + 2 + font.getHeight() + 2);
}
protected boolean keyChar(char key, int status, int time) {
if (key == Characters.ENTER) {
return this.navigationClick(status, time);
}
return super.keyChar(key, status, time);
}
protected boolean navigationClick(int status, int time) {
fieldChangeNotify(1);
return true;
}
protected void fieldChangeNotify(int context) {
try {
this.getChangeListener().fieldChanged(this, context);
} catch (Exception e) {
Log.Debug("Error responding to field change: " + e);
}
} }