public boolean onKeyDown(int keyCode, KeyEvent event)
{
    Log.d(TAG, "onKeyDown: keycode=" + keyCode + ", event="
            + event);
    switch (keyCode) {
        case KeyEvent.KEYCODE_1:
            select(selX, selY - 1);
            break;
        case KeyEvent.KEYCODE_DPAD_DOWN:
            select(selX, selY + 1);
            break;
        case KeyEvent.KEYCODE_DPAD_LEFT:
            select(selX - 1, selY);
            break;
        case KeyEvent.KEYCODE_DPAD_RIGHT:
            select(selX + 1, selY);
            break;
        default:
            return super.onKeyDown(keyCode, event);
    }
    return true;
}


private void select(int x, int y)
{
    invalidate(selRect);
    selX = Math.min(Math.max(x, 0), 8);
    selY = Math.min(Math.max(y, 0), 8);
    getRect(selX, selY, selRect);
    invalidate(selRect);
}