Android 贪吃蛇源码分析(3)

/**
     * 画出主界面图
     */
    @Override
    public void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        for (int x = 0; x < mXTileCount; x += 1) {
            for (int y = 0; y < mYTileCount; y += 1) {
                if (mTileGrid[x][y] > 0) {
                    canvas.drawBitmap(mTileArray[mTileGrid[x][y]],
                            mXOffset + x * mTileSize,
                            mYOffset + y * mTileSize,
                            mPaint);
                }
            }
        }

}

}