ButtonField personalized with images

Hi all

I am trying to create a custom ButtonField, I'm unable to remove the background gray color. Could someone tell me what's wrong with this code?

import net.rim.device.api.system.Bitmap;
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.FontFamily;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.component.ButtonField;

public class BigButtonField extends ButtonField{

    private int backgroundColour = Color.BLACK;
    private Bitmap button;
    private Bitmap on = Bitmap.getBitmapResource("onbutton.png");
    private Bitmap off = Bitmap.getBitmapResource("offbutton.png");
    private int fieldWidth = Graphics.getScreenWidth();
    private int fieldHeight = 31;
    private int buffer = (Graphics.getScreenWidth() - 105) / 2;
    private String text;
    private Font fieldFont;

    public BigButtonField(String _text) {
        super(Field.FOCUSABLE);
        this.text = _text;
        button = off;
        fieldFont = FieldFont();
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

    protected boolean navigationClick(int status, int time) {
        fieldChangeNotify(1);
        return true;
    }

    protected void onFocus(int direction){
        button = on;
        invalidate();
    }

    protected void onUnfocus(){
        button = off;
        invalidate();
    }

    public int getPreferredWidth() {
        return fieldWidth;
    }

    public int getPreferredHeight() {
        return fieldHeight;
    }

    protected void layout(int arg0, int arg1) {
        setExtent(getPreferredWidth(), getPreferredHeight());
    }

    public static Font FieldFont() {
        try {
            FontFamily theFam = FontFamily.forName("SYSTEM");
            return theFam.getFont(net.rim.device.api.ui.Font.BOLD, 14);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        return null;
    }

    protected void drawFocus(Graphics graphics, boolean on){
        //
    }

    protected void fieldChangeNotify(int context){
        try {
            this.getChangeListener().fieldChanged(this, context);
        } catch (Exception exception) {
        }
    }

    protected void paint(Graphics graphics) {
        graphics.drawRect(0, 0, fieldWidth, fieldHeight);
        graphics.fillRect(10, 0, fieldWidth-200, fieldHeight);
        graphics.drawBitmap(0, 0, fieldWidth, fieldHeight, button, 0, 0);
        graphics.setColor(Color.BLACK);
        graphics.setFont(fieldFont);
        graphics.drawText(text, ((fieldWidth - fieldFont.getAdvance(text))/ 2) - 70, (fieldHeight - fieldFont.getHeight()) / 2);
    }
}

Please provide your suggestion. If you have any other sample for buttonField customized by using bitmap then please share here.

Buzz.

Hi all

I found the solution myself.

1. I spread "Field" in my code, which removed the gray area of the background.

2. I added a FieldChanglistner to the customed button whenever I use it.

Yet once again thanks to you.

Buzz.

Tags: BlackBerry Developers

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