android Snake游戏改进，更便于理解和初学者进行学习

贴出部分代码，以供参考： private static int mTileSize; protected static int mXTileCount; protected static int mYTileCount; protected static final int RED_STAR = 1; protected static final int GREEN_STAR = 2; protected static final int YELLOW_STAR = 3; private int[][] mTileGrid; private Bitmap[] mTileBitmap; private Paint mPaint = new Paint(); public TileView(Context context, AttributeSet attrs) { super(context, attrs); mTileSize = 12; mTileBitmap = new Bitmap[4]; Resources r = getResources(); loadTile(RED_STAR, r.getDrawable(R.drawable.redstar)); loadTile(GREEN_STAR, r.getDrawable(R.drawable.greenstar)); loadTile(YELLOW_STAR, r.getDrawable(R.drawable.yellowstar)); } 优化了这里的构造函数，更容易理解