I have a button field. its color is red. when i click on it color the button should change to black how to do it?
How to change the color of the button on clicking it
738 Views Asked by chaitu2408 At
5
There are 5 best solutions below
0

You can try with "Tutorial: Creating a custom button" of the official RIM docs.
I think it is what your looking for
0

use this -
image1 is red color image button and image2 is black
reg_can_btn editprofile = new reg_can_btn("", Field.FOCUSABLE |FIELD_HCENTER, image1, image2, 0x102839);
then
public class edit_profile_btn extends Field {
private String _label;
private int _labelHeight;
private int _labelWidth;
private Font _font;
private Bitmap _currentPicture;
private Bitmap _onPicture;
private Bitmap _offPicture;
int color;
public edit_profile_btn(String text, long style ,String img, String img_hvr, int color){
super(style);
_offPicture = Bitmap.getBitmapResource(img);
_onPicture = Bitmap.getBitmapResource(img_hvr);
_font = getFont();
_label = text;
_labelHeight = _onPicture.getHeight();
_labelWidth = _onPicture.getWidth();
this.color = color;
_currentPicture = _offPicture;
}
/**
* @return The text on the button
*/
String getText(){
return _label;
}
/**
* Field implementation.
* @see net.rim.device.api.ui.Field#getPreferredHeight()
*/
public int getPreferredHeight(){
return _labelHeight;
}
/**
* Field implementation.
* @see net.rim.device.api.ui.Field#getPreferredWidth()
*/
public int getPreferredWidth(){
return _labelWidth;
}
/**
* Field implementation. Changes the picture when focus is gained.
* @see net.rim.device.api.ui.Field#onFocus(int)
*/
protected void onFocus(int direction) {
_currentPicture = _onPicture;
invalidate();
}
/**
* Field implementation. Changes picture back when focus is lost.
* @see net.rim.device.api.ui.Field#onUnfocus()
*/
protected void onUnfocus() {
_currentPicture = _offPicture;
invalidate();
}
/**
* Field implementation.
* @see net.rim.device.api.ui.Field#drawFocus(Graphics, boolean)
*/
protected void drawFocus(Graphics graphics, boolean on) {
// Do nothing
}
/**
* Field implementation.
* @see net.rim.device.api.ui.Field#layout(int, int)
*/
protected void layout(int width, int height) {
setExtent(Math.min( width, getPreferredWidth()),
Math.min( height, getPreferredHeight()));
}
/**
* Field implementation.
* @see net.rim.device.api.ui.Field#paint(Graphics)
*/
protected void paint(Graphics graphics){
// First draw the background colour and picture
//graphics.setColor(this.color);
graphics.setBackgroundColor(Color.BLACK);
graphics.fillRect(0, 0, getWidth(), getHeight());
graphics.drawBitmap(0, 0, getWidth(), getHeight(), _currentPicture, 0, 0);
// Then draw the text
graphics.setColor(Color.BLACK);
graphics.setFont(_font);
graphics.drawText(_label, 4, 2,
(int)( getStyle() & DrawStyle.ELLIPSIS | DrawStyle.HALIGN_MASK ),
getWidth() - 6 );
}
/**
* Overridden so that the Event Dispatch thread can catch this event
* instead of having it be caught here..
* @see net.rim.device.api.ui.Field#navigationClick(int, int)
*/
protected boolean navigationClick(int status, int time){
fieldChangeNotify(1);
return true;
}
}
0

try this it is work,
public int checkBoxFlag1 = 0;
public int checkBoxFlag2 = 0;
public int checkBoxFlag3 = 0;
final Bitmap focuscheckButton = Bitmap.getBitmapResource("checkbox_tickmark.png");
final Bitmap unfocuscheckButton = Bitmap.getBitmapResource("checkbox.png");
HorizontalFieldManager checkBoxFieldManager = new HorizontalFieldManager();
BitmapField checkBox1 = new BitmapField(unfocuscheckButton,Field.FOCUSABLE)
{
protected void paint(Graphics graphics)
{
// TODO Auto-generated method stub
if(checkBoxFlag1==0)
{
this.setBitmap(unfocuscheckButton);
}
else
{
this.setBitmap(focuscheckButton);
}
super.paint(graphics);
}
protected boolean navigationClick(int status, int time)
{
// TODO Auto-generated method stub
if(checkBoxFlag1==0)
{
checkBoxFlag1=1;
}
else
{
checkBoxFlag1=0;
}
return super.navigationClick(status, time);
}
};
checkBox1.setMargin(0,20,0,20);
checkBoxFieldManager.add(checkBox1);
Have you tried out this tutorial "Blackberry Custom Button Field" or you can also make a Bitmap Field with the background set to one color and have a custom paint method implemented for the required changes.