ListField item background Color - blackberry

Question

I just want to know how can I change ListField's item background color. I have two items in my ListField like this one.
|First One|Second One.................|
I need to change first one's background color.
My drawListRow(..) method looks like this
public void drawListRow(ListField listField, Graphics graphics,
int index, int y, int width) {
int oldColor = 0;
try {
oldColor = graphics.getColor();
String txt = (vector.elementAt(index)).toString();
int xPos = 15;
int yPos = 5 + y;
//graphics.clear();
graphics.setColor(Color.GREEN);
graphics.fillRect(0, y, (Display.getWidth()*10/100), yPos);
graphics.drawText(txt, xPos, yPos);
//graphics.fillRect(0,(index*Display.getHeight()/10),Display.getWidth(),Display.getHeight()/10);
} finally {
graphics.setColor(oldColor);
}
}
But this is not working.

Answer 1

Though you have attached an image, I am still confused. The image didn't answer some question, for example, how it will look on a row get focused (I didn't understand actually).
But you can check following output and code. I think you can customize the look as you wish if you check the code.
Generated Output
How to use
public class MyScreen extends MainScreen {
private Vector listElements;
public MyScreen() {
setTitle("Custom ListField Demo");
// data for the ListField
listElements = new Vector();
for (int i = 0; i < 4; i++) {
listElements.addElement("Some text for row " + i);
}
ListField taskList = new ListField() {
// disable default focus drawing
protected void drawFocus(Graphics graphics, boolean on) {
};
};
taskList.setCallback(new ListCallback(listElements));
taskList.setSize(listElements.size());
taskList.setRowHeight(40);
add(taskList);
}
}
ListCallback implementation
class ListCallback implements ListFieldCallback {
final int COLOR_INDEX_NORMAL_BG = 0x1D6789;
final int COLOR_INDEX_FOCUSED_BG = 0x0E8CB3;
final int COLOR_NORMAL_BG = 0x2A2A2A;
final int COLOR_FOCUSED_BG = 0x1F1F1F;
private Vector listElements;
public ListCallback(Vector listElements) {
this.listElements = listElements;
}
public void drawListRow(ListField list, Graphics graphics, int index, int y,
int width) {
int rowHeight = list.getRowHeight(index);
boolean isSelectedRow = (list.getSelectedIndex() == index);
int indexBgColor = isSelectedRow ? COLOR_INDEX_FOCUSED_BG : COLOR_INDEX_NORMAL_BG;
int rowBgColor = isSelectedRow ? COLOR_FOCUSED_BG : COLOR_NORMAL_BG;
final int indexWidth = width / 10;
// draw row background
fillRectangle(graphics, rowBgColor, 0, y, width, rowHeight);
// draw index background
fillRectangle(graphics, indexBgColor, 0, y, indexWidth, rowHeight);
// set text color, draw text
Font font = list.getFont();
graphics.setColor(Color.WHITE );
graphics.setFont(font);
String indexText = "" + (index + 1);
String textToDraw = "";
try {
textToDraw = (String) listElements.elementAt(index);
} catch (Exception exc) {
}
int xText = (indexWidth - font.getAdvance(indexText)) / 2;
int yText = (rowHeight - font.getHeight()) / 2;
graphics.drawText(indexText, xText, y + yText, 0, indexWidth);
final int margin = 5;
int availableWidth = (width - indexWidth) - 2 * margin;
xText = indexWidth + margin;
yText = (rowHeight - font.getHeight()) / 2;
graphics.drawText(textToDraw, xText, y + yText, DrawStyle.ELLIPSIS, availableWidth);
}
private void fillRectangle(Graphics graphics, int color, int x, int y, int width, int height) {
graphics.setColor(color);
graphics.fillRect(x, y, width, height);
}
public Object get(ListField list, int index) {
// not implemented
return "";
}
public int indexOfList(ListField list, String prefix, int string) {
// not implemented
return 0;
}
public int getPreferredWidth(ListField list) {
return Display.getWidth();
}
}

Answer 2

If you need to change onFocus Background color than add drwFocus method on your ListField.
protected void drawFocus(Graphics graphics, boolean on) {
//get the focus rect area
XYRect focusRect = new XYRect();
getFocusRect(focusRect);
boolean oldDrawStyleFocus = graphics.isDrawingStyleSet(Graphics.DRAWSTYLE_FOCUS);
try {
if (on) {
//set the style so the fields in the row will update its color accordingly
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, true);
int oldColour = graphics.getColor();
try {
graphics.setColor(0xc8d3db); //set the color and draw the color
graphics.fillRect(focusRect.x, focusRect.y,
focusRect.width, focusRect.height);
} finally {
graphics.setColor(oldColour);
}
//to draw the row again
drawListRow(this, graphics, getSelectedIndex(),
focusRect.y, focusRect.width);
// drawRow(graphics, focusRect.x,focusRect.y, focusRect.width,focusRect.height);
}
} finally {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, oldDrawStyleFocus);
}
}

Answer 3

Check the edited answer,
protected void drawFocus(Graphics graphics, boolean on) {
XYRect focusRect = new XYRect();
getFocusRect(focusRect);
boolean oldDrawStyleFocus = graphics.isDrawingStyleSet(Graphics.DRAWSTYLE_FOCUS);
try {
if (on) {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, true);
int oldColour = Color.BLACK;
try {
graphics.fillRect(focusRect.x, focusRect.y,
focusRect.width, focusRect.height);
} finally {
graphics.setColor(oldColour);
}
//to draw the row again
drawListRow(this, graphics, getSelectedIndex(),
focusRect.y, focusRect.width);
}
} finally {
graphics.setDrawingStyle(Graphics.DRAWSTYLE_FOCUS, oldDrawStyleFocus);
}
}