Java Development

[yswddd]

I have to use ObjectChoiceField,but the default ObjectChoiceField is not good looking,who can help me for some code ,thanks

[BBDeveloper]

Describe, How do you want to see your ObjectChoiceField.

[yswddd]

When I focus the focus on,it didn't have any change . I think it should be highlight or else,tell me how to do this issue,thanks

[BBDeveloper]

When you have a ObjectChoiceField, you can set the index to display the selected item. Looks depends on the Theme of BB device. For ObjectChoiceField Label you can paint the background or change the color of the text.

[yswddd]

Here is my code:

class MyChoiceField extends ObjectChoiceField{
 
 MyChoiceField (String label, Object[] choices,long style,int choice){
  super(label,  choices,choice,style);
  //this.setExtent(getContentWidth()+50, getHeight());
 }
 
 public void layout(int width, int height){
        super.layout(width, height);
        setExtent(getWidth() + 10, getPreferredHeight());       
        //setVirtualExtent(width, managerHeight);              
    }
 

    

    
 public void paint(Graphics graphics){
  graphics.setColor(Color.WHITE);
  graphics.fillRect(0, 0, getWidth(), getHeight());
  graphics.setColor(Color.BLACK);
        int w = 10;
        int h = w>>1;       
        for (int i=0; i<=h; i++) {
         graphics.invert(i, i,  w - (i << 1), 1);
            //System.out.println(i + "~~~~  " + i + " " + i + " " + (w - (i << 1)) + " 1");
        }       
        graphics.drawRect(1, 0, getWidth()-1, getHeight());


        super.paint(graphics);

    }

public void drawFocus(Graphics graphics,boolean on){
       super.drawFocus(graphics, on);     
 }

but when the item is focused on ,  there is no change happen,not like the text or eles,help me.

[yswddd]

And another question: how to change color of the background or text., override the paint method just as my code or else? thanks.

[BBDeveloper · Accepted solution]

Hi I modified ur code this way to check the focusChange and changing text.

    class MyChoiceField extends ObjectChoiceField
    {
        boolean onFocuss;
        MyChoiceField (String label, Object[] choices,int choice,long style)
        {
            super(label,  choices,choice,style);

        }
        
        public void paintBackground(Graphics graphics)
        {
            if(onFocuss)
            {
                graphics.clear();
                int color = graphics.getColor();
                graphics.setColor( 0x00FF00 );
            }
            else
            {
                graphics.clear();
                int color = graphics.getColor();
                graphics.setColor( 0x000000 );
            }
        }

    
        public void onFocus(int dir)
        {
            onFocuss = true;
            invalidate();
        }
        
        public void onUnfocus()
        {
            onFocuss = false;
            invalidate();
        }
    }