Java Development

[mrdialect2012]

Hi Guys,

Pretty quick one here,

I am looking to draw a circle on the main screen of a phone app i am creating.

So far on the main screen I have drawn 9 rectangles. But on  a keypress event I want

to paint on top of these rectangles my circle.

I've used java before to do this op using repaint but am not sure how to 

repaint/refresh so i can draw on top of an already drawn shape which happens onload.

Darren

[simon_hain]

welcome to the support forums.

everything on the screen is drawn in paint (or paintBackground).
you will have to redraw your rectangles and add the circle.

[mrdialect2012]

how would I redraw, repaint doesnt seem to call the paint method again and dopaint doesnt either when I call it. 

 public MyScreen()
    {        
        super( MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR );        
        setTitle("MyTitle"); 

    }
    
     public boolean keyChar(char key, int status, int time) {
    	if(key == 'e')
    	{
         	
         // Here I want to draw a new circle
        
    	} 
    	else 
    	{
    	
    	}
    	return true;
    	}

    protected void paint(Graphics g)
    {	
    	g1 = (Graphics) g;
    	super.paint(g1);
    	drawBoard(g1); 
    }
    
    public void drawBoard(Graphics g)
    {
    	int y = 0;
    	int z =0;
    	for (int i =0; i<= rectangles.length; i++)
    	{
    		if(i >= 0 && i <=2)
    		{
    		g.drawRect(160+ i * 90 , 100, 90, 90);
    		
    		} 
    		else if(i >= 3 && i <=5)
    		{	
    		g.drawRect(160+ y * 90, 190, 90, 90);
    		y++;
    		}
    		else if(i >= 6 && i <=8)
    		{
    		g.drawRect(160 + z *90 , 280, 90, 90);
    		z++;
    		}
    	}    	
    }

The above code draws a set of rectangles on the main screen but drawing on top of this how is this done, normally i would just use a repaint on a boolean setting but this does not work

[simon_hain · Accepted solution]

you add the drawCircle in the paint method resp the drawBoard method, just add a condition that you can modify.
you can issue a repaint using invalidate().

[mrdialect2012]

Thanks, works a charm