一、游戏界面效果显示

二、布局Activity.xml代码

<LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="得分"android:textSize="20sp" /><TextViewandroid:id="@+id/tvSorce"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:layout_width="145dp"android:layout_height="wrap_content" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="最高分"android:textSize="20sp" /><TextViewandroid:id="@+id/maxSorce"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout><TextViewandroid:layout_width="match_parent"android:layout_height="80dp"android:background="#FFCC99"android:text="宇琴的2048"android:textSize="30sp"android:gravity="center"/><com.example.hp.yq2048.GameViewandroid:layout_width="fill_parent"android:layout_height="0dp"android:layout_weight="1"android:id="@+id/gameView" />
<Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:id="@+id/bt_cx"android:text="重来"android:background="#FFFFCC"/>

三、GramView.java代码

public class GameView extends GridLayout {
//我们需要定义一个二维数组来记录GameView初始化时生成的16个卡片类
private Card[][] cardsMap = new Card[4][4];
private static GameView gameView = null;
public static GameView getGameView() {
return gameView;
}

private List<Point> points = new ArrayList<Point>();public GameView(Context context) {super(context);gameView = this;initGameView();
}public GameView(Context context, AttributeSet attrs) {super(context, attrs);gameView = this;initGameView();
}public GameView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);gameView = this;initGameView();
}/*** 初始化界面*/
private void initGameView(){Log.d("233","0");setColumnCount(4);  //指名是4列的setBackgroundColor(0xffbbada0);addCards(getCardWitch(),getCardWitch());startGame();setOnTouchListener(new OnTouchListener() {private float startX,startY;//初始的位置private float offsetX,offsetY; //偏移的值@Overridepublic boolean onTouch(View view, MotionEvent motionEvent) {switch (motionEvent.getAction()){case MotionEvent.ACTION_DOWN:startX  = motionEvent.getX();startY = motionEvent.getY();break;case MotionEvent.ACTION_UP:offsetX = motionEvent.getX()-startX;offsetY = motionEvent.getY()-startY;if(Math.abs(offsetX)>Math.abs(offsetY)) {  //这个是防止斜着化if (offsetX < -5) {Log.d("233","left");swipeLeft();} else if (offsetX > 5) {Log.d("233","right");swipeRight();}}else {if (offsetY < -5){Log.d("233","up");swipeUp();}else if (offsetY>5){Log.d("233", "down ");swipeDown();}}break;}return true;}});}/*** 布局里面加入卡片* @param cardWidth* @param cardHeight*/
private void addCards(int cardWidth,int cardHeight){Card c;for(int y = 0;y< 4;y++){for(int x = 0;x < 4;x++){c = new Card(getContext());c.setNum(0);Log.d("233","3");addView(c,cardWidth,cardHeight);Log.d("233","4");cardsMap[x][y] = c;}}}/*** 获取屏幕的宽度* @return*/
private int getCardWitch(){Log.d("233","5");DisplayMetrics displayMetrics;displayMetrics = getResources().getDisplayMetrics();int carWitch;carWitch = displayMetrics.widthPixels;return (carWitch-10)/4;
}
public void startGame(){for (int y = 0;y<4;y++){for (int x = 0;x < 4;x++) {cardsMap[x][y].setNum(0);}}MainActivity.getMainActivity().score = 0;addRondomNum();addRondomNum();}private void addRondomNum(){points.clear();for (int y = 0;y < 4;y++){for (int x = 0;x <4;x++){if (cardsMap[x][y].getNum()<=0){points.add(new Point(x,y));}}}Point p = points.remove((int)(Math.random()*points.size()));cardsMap[p.x][p.y].setNum(Math.random() > 0.1?2:4);
}
//设置随机数的方法
private void addRandomNum(){//把这个point清空，每次调用添加随机数时就清空之前所控制的指针points.clear();//对所有的位置进行遍历：即为每个卡片加上了可以控制的指针for(int y = 0;y<4;y++){for (int x = 0; x < 4;x++) {if(cardsMap[x][y].getNum()<=0){points.add(new Point(x,y));//给List存放控制卡片用的指针（通过坐标轴来控制）}}}//一个for循环走完我们就从List里取出一个控制指针的point对象Point p = points.remove((int)(Math.random()*points.size()));//cardsMap[p.x][p.y].setNum(Math.random()>0.1?2:4);//通过point对象来充当下标的角色来控制存放card的二维数组cardsMap，然后随机给定位到的card对象赋值
}private void swipeLeft(){boolean merge = false;//控制每滑动一次画面就加一个随机数到画面，也就是在下面所有for循环之后

// Toast.makeText(getContext(), “向左滑动了”, 0).show();
//以下两行for循环实现了一行一行的遍历，在向左滑动的时候
for (int y = 0; y < 4; y++) {
for (int x = 0; x < 4; x++) {

            for (int x1 = x+1; x1 < 4; x1++) {//这是在水平上固定了一个格子之后再继续在水平上遍历别的格子，且当格子有数的时候进行以下的操作if (cardsMap[x1][y].getNum()>0) {//现在判断被固定的格子有没有数字，如果没有数字就进行以下的操作if (cardsMap[x][y].getNum()<=0) {//把与被固定的格子的同一水平上的格子的数字赋给被固定的格子cardsMap[x][y].setNum(cardsMap[x1][y].getNum());//把值赋给被固定的格子后自己归零cardsMap[x1][y].setNum(0);//第二层循环，即同一层的不同列退一格继续循环，这样做的原因是为了继续固定这个格子而去检查与它同一水平上的别的格子的内容，因为其他格子是什么个情况还需要继续在第二层进行判断x--;//只要有移动就要加随机数merge = true;}else if (cardsMap[x][y].equals(cardsMap[x1][y])) {//这层判断是判断相邻两个数相同的情况cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x1][y].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());//只要有移动就要加随机数merge = true;}break;}}}}if (merge) {addRandomNum();check();}
}
private void swipeRight(){boolean merge = false;//控制每滑动一次画面就加一个随机数到画面，也就是在下面所有for循环之后

// Toast.makeText(getContext(), “向右滑动了”, 0).show();
for (int y = 0; y < 4; y++) {
for (int x = 4-1; x >=0; x–) {

            for (int x1 = x-1; x1 >=0; x1--) {if (cardsMap[x1][y].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x1][y].getNum());cardsMap[x1][y].setNum(0);x++;//只要有移动就要加随机数merge = true;}else if (cardsMap[x][y].equals(cardsMap[x1][y])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x1][y].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());//只要有移动就要加随机数merge = true;}break;}}}}if (merge) {addRandomNum();check();}
}
private void swipeUp(){boolean merge = false;//控制每滑动一次画面就加一个随机数到画面，也就是在下面所有for循环之后

// Toast.makeText(getContext(), “向上滑动了”, 0).show();
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 4; y++) {

            for (int y1 = y+1; y1 < 4; y1++) {if (cardsMap[x][y1].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x][y1].getNum());cardsMap[x][y1].setNum(0);y--;//只要有移动就要加随机数merge = true;}else if (cardsMap[x][y].equals(cardsMap[x][y1])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x][y1].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());//只要有移动就要加随机数merge = true;}break;}}}}if (merge) {addRandomNum();check();}
}
private void swipeDown(){boolean merge = false;//控制每滑动一次画面就加一个随机数到画面，也就是在下面所有for循环之后

// Toast.makeText(getContext(), “向下滑动了”, 0).show();
for (int x = 0; x < 4; x++) {
for (int y = 4-1; y >=0; y–) {

            for (int y1 = y-1; y1 >=0; y1--) {if (cardsMap[x][y1].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x][y1].getNum());cardsMap[x][y1].setNum(0);y++;//只要有移动就要加随机数merge = true;}else if (cardsMap[x][y].equals(cardsMap[x][y1])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x][y1].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());//只要有移动就要加随机数merge = true;}break;}}}}if (merge) {addRandomNum();check();}
}
/*** 判断游戏结束的* 界面格子全满了且相邻的格子没有相同的数字*/
private void check(){boolean complete = true;ALL: for(int y = 0;y <4;y++){for(int x = 0;x<4;x++){if (cardsMap[x][y].getNum()==0||(x>0&&cardsMap[x][y].equals(cardsMap[x-1][y]))||(x<3&&cardsMap[x][y].equals(cardsMap[x+1][y]))||(y>0&&cardsMap[x][y].equals(cardsMap[x][y-1]))||(y<3&&cardsMap[x][y].equals(cardsMap[x][y+1]))) {complete = false;break ALL;}}}if (complete){new AlertDialog.Builder(getContext()).setTitle("嘿嘿").setMessage("游戏结束").setPositiveButton("重来", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {startGame();}}).show();}/*** 这个是判定赢了的逻辑* 只要有一个格子的数字是2048就赢了*/for (int x = 0;x < 4;x++){for(int y = 0;y < 4;y++){if (cardsMap[x][y].getNum()==2048){new AlertDialog.Builder(getContext()).setTitle("耶！").setMessage("你赢了").setPositiveButton("重来吗", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {startGame();}}).show();}}}
}

四、卡片Card.java代码
public class Card extends FrameLayout {
private TextView label; //呈现的文字
private int num = 0; //绑定的编号
// 设置背景色
private int defaultBackColor = 0x338B8B00;

public Card(Context context) {super(context);label = new TextView(getContext());   //显示下label.setTextSize(32);label.setGravity(Gravity.CENTER);label.setBackgroundColor(0x33ffffff);LayoutParams lp = new LayoutParams(-1,-1);  //创建个布局，填充满整个父局容器lp.setMargins(15,15,0,0);addView(label,lp);   //然后扔进去setNum(0);
}public int getNum() {return num;
}public void setNum(int num) {this.num = num;label.setBackgroundColor(getBackground(num));if (this.num<= 0){label.setText("");}else {label.setText(num + "");}}private int getBackground(int num) {int bgcolor = defaultBackColor;switch (num) {case 0:bgcolor = 0xffCCC0B3;break;case 2:bgcolor = 0xffEEE4DA;break;case 4:bgcolor = 0xffEDE0C8;break;case 8:bgcolor = 0xffF2B179;// #F2B179break;case 16:bgcolor = 0xffF49563;break;case 32:bgcolor = 0xffF5794D;break;case 64:bgcolor = 0xffF55D37;break;case 128:bgcolor = 0xffEEE863;break;case 256:bgcolor = 0xffEDB04D;break;case 512:bgcolor = 0xffECB04D;break;case 1024:bgcolor = 0xffEB9437;break;case 2048:bgcolor = 0xffEA7821;break;default:bgcolor = 0xffEA7821;break;}return bgcolor;
}/*** 判断卡片的数字是否相同* @param* @return*/
public boolean equals(Card o) {return getNum()==o.getNum();
}

五、最高分BastScode.java代码
public class BastScode {
private SharedPreferences s;
BastScode(Context context){
s = context.getSharedPreferences(“bestscode”,context.MODE_PRIVATE);

}public int getBestScode(){int bestscode = s.getInt("bestscode",0);return bestscode;
}
public void setBestScode(int bestScode){SharedPreferences.Editor editor = s.edit();editor.putInt("bestscode",bestScode);editor.commit();
}

六、MainActivity.java代码
public class MainActivity extends Activity implements View.OnClickListener{
public TextView tvScrore;//计分的
public TextView tvBestScore;//最高分
public int score = 0;
private int bestScores;//历史最高成绩
private Button bt;

private static MainActivity mainActivity = null;
public MainActivity(){mainActivity = this;
}public static MainActivity getMainActivity() {return mainActivity;
}@Override
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);inital();}@SuppressLint("SetTextI18n")
public void inital() {tvBestScore = (TextView) findViewById(R.id.maxSorce);tvScrore = (TextView) findViewById(R.id.tvSorce);bt = (Button)findViewById(R.id.bt_cx);bt.setOnClickListener(this);BastScode bastScode = new BastScode(this);bestScores = bastScode.getBestScode();tvBestScore.setText(bestScores+"");
}@Override
public void onClick(View v) {GameView.getGameView().startGame();
}public void clearScore(){score = 0;showScore();
}
public void showScore(){tvScrore.setText(score+"");
}
public void addScore(int s){score+=s;showScore();if (score > bestScores){bestScores = score;BastScode bs = new BastScode(this);bs.setBestScode(bestScores);tvBestScore.setText(bestScores+"");}
}/*** 菜单、返回键响应*/
private long exitTime = 0;@SuppressLint("WrongConstant")
public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK&& event.getAction() == KeyEvent.ACTION_DOWN) {if ((System.currentTimeMillis() - exitTime) > 2000) {Toast.makeText(this, "再按一次退出",1000).show();exitTime = System.currentTimeMillis();} else {finish();System.exit(0);}return true;}return super.onKeyDown(keyCode, event);
}

七、总结
以上便是2048小游戏的所有实现代码，其中注意的是在AndroidManifest.xml中需要添上一行代码 android:screenOrientation=“portrait”，以便可以适用于任何屏幕尺寸的手机。