private ShapeDrawable letterX;
        private ShapeDrawable letterO;

        public static boolean isDrawX = true;

        public CustomDrawableView(Context context) {
                super(context);

                TimerTask toggleDraw =
                new TimerTask {
                        public run() {
                                runOnUiThread(new Runnable() {
                   @Override
                   public void run() {
                       isDrawX != isDrawX;
                   }
               });
                        }
                };
                Timer timer = new Timer();
                timer.scheduleAtFixedRate(toggleDraw, 500);

                int x = 10;
                int y = 10;
                int width = 300;
                int height = 50;

                letterO = new ShapeDrawable(new OvalShape());
                letterO.getPaint().setColor(0xff000000);
                letterO.setBounds(x, y, x + width, y + height);

                Path pX = new Path();
                pX.moveTo(x,y);
                pX.lineTo(x+width, y+height);
                letterX = new ShapeDrawable(new PathShape(pX, width, height));
        }

        protected void onDraw(Canvas canvas) {
                if(isDrawX)
                        letterX.draw(canvas);
                else
                        letterO.draw(canvas);
        }
 }

// Induce this class with a Layout for Android public class CustomDrawableView extends View { private ShapeDrawable letterX; private ShapeDrawable letterO; public static boolean isDrawX = true; public CustomDrawableView(Context context) { super(context); TimerTask toggleDraw = new TimerTask { public run() { runOnUiThread(new Runnable() { @Override public void run() { isDrawX != isDrawX; } }); } }; Timer timer = new Timer(); timer.scheduleAtFixedRate(toggleDraw, 500); int x = 10; int y = 10; int width = 300; int height = 50; letterO = new ShapeDrawable(new OvalShape()); letterO.getPaint().setColor(0xff000000); letterO.setBounds(x, y, x + width, y + height); Path pX = new Path(); pX.moveTo(x,y); pX.lineTo(x+width, y+height); letterX = new ShapeDrawable(new PathShape(pX, width, height)); } protected void onDraw(Canvas canvas) { if(isDrawX) letterX.draw(canvas); else letterO.draw(canvas); } } // John Miller, Katharine Brinker, Brandon Cruz, Mark Odell