2048(Android)

整个页面分为三个部分：

1）GridLayout：存放两个TextView（【score】以及当前所得分数数值）

2）自定义控件GameView（GridLayout）：4*4方格，每个方格中存放一个TextView（用于存放num）

3）Button重新开始

代码：

Main:

package com.example.project2048;import com.example.project2048.R;  //加入自定义控件import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;public class MainActivity extends Activity implements OnClickListener{private int score = 0;private TextView tvScore;   //定义一个文本框，用于存储所得分数private static  MainActivity mainActivity = null;private GameView gameView;   //自定义控件（4*4卡片的操作，即游戏主体）private Button btRestart;  //按钮"重新开始"public MainActivity(){mainActivity = this;}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tvScore = (TextView) findViewById(R.id.tvScore);  //实例化（卡片移动函数可调用）gameView = (GameView) findViewById(R.id.gameView);btRestart = (Button) findViewById(R.id.btRestart);btRestart.setOnClickListener(this);}public static MainActivity getMainActivity(){return mainActivity;}public void showScore(){tvScore.setText(score+"");}public void addScore(int s){  //分数计算score += s;showScore();}public void clearScore(){  //分数清0score = 0;showScore();}@Overridepublic void onClick(View v) {gameView.restartGame();}
}

GameView:

package com.example.project2048;import java.util.ArrayList;
import java.util.List;import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Point;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.GridLayout;
import android.widget.Toast;/** 自定义控件：* 1.新建一个类，继承view/view的子类    *增加相应的构造方法* 2.在布局文件中加入该类   *使用全类名*/
public class GameView extends GridLayout {private Card[][] cardsMap = new Card[4][4];   //存储4*4方格中的数字private List<Point> lists = new ArrayList<Point>();public GameView(Context context, AttributeSet attrs) {super(context, attrs);// TODO Auto-generated constructor stubinitGame(); }private void initGame(){   //初始化setColumnCount(4);   //设置4行4列setBackgroundColor(0xffbbada0);   //设置背景颜色setOnTouchListener(new OnTouchListener() {   //（手指）移动监听private float startX,startY,offsetX,offsetY;@Overridepublic boolean onTouch(View v, MotionEvent event) {// TODO Auto-generated method stubswitch (event.getAction()) {case MotionEvent.ACTION_DOWN:    //（手指）按下//获取当前位置坐标startX = event.getX();startY = event.getY();break;case MotionEvent.ACTION_UP:      //（手指）抬起//获取手指X,Y轴的位移（有方向）offsetX = event.getX() - startX;offsetY = event.getY() - startY;/*判断手指移动方向（上下左右）*（-5,5）为误差范围内（误差：eg.手指不小心滑动） */if (Math.abs(offsetX) > Math.abs(offsetY)) {if (offsetX < -5) {swipeLeft();//Toast.makeText(getContext(), "向左滑动", Toast.LENGTH_LONG).show();} else if(offsetX > 5) {swipeRight();//Toast.makeText(getContext(), "向右滑动", Toast.LENGTH_LONG).show();}}else {if (offsetY < -5) {swipeUp();//Toast.makeText(getContext(), "向上滑动", Toast.LENGTH_LONG).show();}else if (offsetY > 5) {swipeDown();//Toast.makeText(getContext(), "向下滑动", Toast.LENGTH_LONG).show();}}break;}return true;}});}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {// TODO Auto-generated method stubsuper.onSizeChanged(w, h, oldw, oldh);int cardWidth = (Math.min(w, h)-10)/4; //获取卡片大小addCard(cardWidth, cardWidth);startGame();}private void addCard(int cardWidth,int cardHeigh){Card c;//遍历方格，将文本框添加至方格中for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {c = new Card(getContext());// c.setNum(0);addView(c, cardWidth, cardHeigh);cardsMap[x][y] = c;}}}private void startGame(){   //游戏开始MainActivity.getMainActivity().clearScore();   //分数清0for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {cardsMap[x][y].setNum(0);   //4*4方格上的数字全部置为0}}//添加两个随机数addRandomNum();addRandomNum();}private void addRandomNum(){   //添加随机数lists.clear();//遍历4*4方格，寻找空白方格（即数字为0的）for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {if (cardsMap[x][y].getNum() <= 0) {lists.add(new Point(x, y));}}}Point p = lists.remove((int)(Math.random()*lists.size()));  //避免越界cardsMap[p.x][p.y].setNum(Math.random()>0.1 ? 2 : 4);//9:1}//上下左右移动private void swipeLeft(){   //左移boolean add = false;for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {for (int x1 = x+1; x1 < 4; x1++) {if (cardsMap[x1][y].getNum() > 0) {  //右边存在不为空（不为0）的卡片//左边卡片为空（为0），右边卡片左移if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x1][y].getNum());cardsMap[x1][y].setNum(0);x--;add = true;} //左边卡片与右边卡片值相等，右边移至左边叠加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()); //分数相应增加add = true;}break;}}}}if (add) {addRandomNum();  //移动后添加随机数endGame();   //判断游戏是否结束}}private void swipeRight(){   //右移boolean add = false;for (int y = 0; y < 4; y++) {for (int x = 3; 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++;add = 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());add = true;}break;}}}}if (add) {addRandomNum();endGame();}}private void swipeUp(){   //上移boolean add = false;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--;add = 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());add = true;}break;}}}}if (add) {addRandomNum();endGame();}}private void swipeDown(){   //下移boolean add = false;for (int x = 0; x < 4; x++) {for (int y = 3; 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++;add = 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());add = true;}break;}}}}if (add) {addRandomNum();endGame();}}private void endGame(){   //判断游戏是否结束boolean complete = true;ALL:for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {//卡片仍有为空（为0），或连续两张有值相等的，则游戏继续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;}}}//ALL:有一个条件满足循环即中断，提高效率if (complete) {  //若游戏结束new AlertDialog.Builder(getContext())   //弹出提示对话框.setTitle("你好！").setMessage("游戏结束")//为“重新开始”按钮设置监听事件.setPositiveButton("重新开始", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubstartGame();}}).show();}}public void restartGame(){   //重新开始游戏MainActivity.getMainActivity().clearScore();  //分数清0//遍历4*4方格，将值不为0的所有卡片置为0for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {if (cardsMap[x][y] ==null) {continue;}cardsMap[x][y].setNum(0);}}//添加两个随机数addRandomNum();addRandomNum();}}

Card:

package com.example.project2048;import android.content.Context;
import android.graphics.Color;
import android.view.Gravity;
import android.widget.FrameLayout;
import android.widget.TextView;public class Card extends FrameLayout {private TextView tv;  //文本框(卡片中存放数值)private int num = 0;public Card(Context context) {super(context);tv = new TextView(getContext());tv.setTextSize(32);tv.setGravity(Gravity.CENTER);  //在方格中居中放置tv.setBackgroundColor(0x33ffffff);   LayoutParams params = new LayoutParams(-1, -1);params.setMargins(10, 10, 0, 0);addView(tv, params);  //将文本框添加至方格上}public int getNum() {return num;}public void setNum(int num) {this.num = num;//根据卡片上的值不同，设置相应卡片背景颜色if (num <= 0) {tv.setBackgroundColor(0x33ffffff);tv.setText("");   //若卡片值为0，则不显示数值} else {if(num == 2)tv.setBackgroundColor(Color.parseColor("#CDB79E"));//深灰if(num == 4)tv.setBackgroundColor(Color.parseColor("#CDB38B"));//加深灰if(num == 8)tv.setBackgroundColor(Color.parseColor("#FF8C00"));//橙色if(num == 16)tv.setBackgroundColor(Color.parseColor("#FF7F00"));//橙色if(num == 32)tv.setBackgroundColor(Color.parseColor("#FF4500"));//桔红if(num == 64)tv.setBackgroundColor(Color.parseColor("#FF0000"));//红if(num == 128)tv.setBackgroundColor(Color.parseColor("#FFF68F"));//浅桔/*tv.setText(num);* tv.setText(num+"");* 方法重载(int/char)*/tv.setText(num+"");  }}public boolean equals(Card c) {return this.getNum()==c.getNum();}}

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