public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new GameView(this)); }}

/卡片類型public class Card extends FrameLayout { //2 TextView tv; private int number = 0; int width; public Card(Context context, int width) { super(context); this.width = width; init(); } private void init() { tv = new TextView(getContext()); setPadding(5, 5, 5, 5); FrameLayout.LayoutParams lp = new LayoutParams(width - 10, width - 10); tv.setLayoutParams(lp); tv.setGravity(Gravity.CENTER); tv.setTextColor(Color.WHITE); tv.setTextSize(48); this.addView(tv); setColor(); } public void setNumber(int number) { this.number = number; if (number == 0)  tv.setText(""); else  tv.setText(number + ""); setColor(); } @Override public String toString() { return "Card{" +  "tv=" + tv +  ", number=" + number +  ", width=" + width +  '}'; } private void setColor() { switch (number) {  case 0:  tv.setBackgroundColor(getResources().getColor(R.color.c0));  break;  case 2:  tv.setBackgroundColor(getResources().getColor(R.color.c2));  break;  case 4:  tv.setBackgroundColor(getResources().getColor(R.color.c4));  break;  case 8:  tv.setBackgroundColor(getResources().getColor(R.color.c8));  break;  case 16:  tv.setBackgroundColor(getResources().getColor(R.color.c16));  break;  case 32:  tv.setBackgroundColor(getResources().getColor(R.color.c32));  break;  case 64:  tv.setBackgroundColor(getResources().getColor(R.color.c64));  break;  case 128:  tv.setBackgroundColor(getResources().getColor(R.color.c128));  break;  case 256:  tv.setBackgroundColor(getResources().getColor(R.color.c256));  break;  case 512:  tv.setBackgroundColor(getResources().getColor(R.color.c512));  break;  case 1024:  tv.setBackgroundColor(getResources().getColor(R.color.c1024));  break;  case 2048:  tv.setBackgroundColor(getResources().getColor(R.color.c2048));  break; } } public int getNumber() { return number; }}

<?xml version="1.0" encoding="utf-8"?><resources> <color name="colorPrimary">#3F51B5</color> <color name="colorPrimaryDark">#303F9F</color> <color name="colorAccent">#FF4081</color> <color name="c0">#43382a</color> <color name="c2">#2a8618</color> <color name="c4">#3d6319</color> <color name="c8">#F2B179</color> <color name="c16">#F59563</color> <color name="c32">#F57C5F</color> <color name="c64">#5b69b7</color> <color name="c128">#b37d3e</color> <color name="c256">#3a9096</color> <color name="c512">#d7882c</color> <color name="c1024">#5c1b78</color> <color name="c2048">#640548</color></resources>

public class GameView extends GridLayout { int[][] values = new int[4][4]; Card[][] cards = new Card[4][4];// Integer -128-127 == 大于這個數 兩個對象 public GameView(Context context) { super(context); init(); } public GameView(Context context, AttributeSet attrs) { super(context, attrs); init(); } private void init() { setColumnCount(4); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); newGame(); } private void newGame() { //ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams((int) (getResources().getDisplayMetrics().widthPixels / 4), (int) (getResources().getDisplayMetrics().widthPixels / 4)); GridLayout.LayoutParams params = new GridLayout.LayoutParams();// params.width = getResources().getDisplayMetrics().widthPixels / 4;// params.height = getResources().getDisplayMetrics().widthPixels / 4; //Log.e("TAG", params.width + " " + params.height); this.removeAllViews(); // GridLayout.LayoutParams lpa = new GridLayout.LayoutParams(lp); for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  values[i][j] = 0;  cards[i][j] = new Card(getContext(), getResources().getDisplayMetrics().widthPixels / 4);  // cards[i][j].setLayoutParams(params);  //cards[i][j].upLv();  this.addView(cards[i][j]);  } } //創建初始的兩張卡 int i = (int) (Math.random() * 16); int j = 0; do {  j = (int) (Math.random() * 16);//0-15 15 3 3 } while (j == i); Log.e("TAG", i + " " + j); values[i / 4][i % 4] = Math.random() * 20 < 1 ? 4 : 2; values[j / 4][j % 4] = Math.random() * 20 < 1 ? 4 : 2; setValues(); } float oldx, oldy; int move = -1; @Override public boolean onTouchEvent(MotionEvent event) { float x = event.getX(); float y = event.getY(); switch (event.getAction()) {  case MotionEvent.ACTION_DOWN:  move = -1;  oldx = x;  oldy = y;  break;  case MotionEvent.ACTION_MOVE:  if (Math.abs(oldx - x) > Math.abs(oldy - y)) {   if (oldx - x > 15) { //左   Log.e("TAG", "---------->>>");   move = 1;   } else if (oldx - x < -15) {//右   Log.e("TAG", "---------->>>");   move = 2;   }  } else {   if (oldy - y > 15) {   move = 3;   } else if (oldy - y < -15) {   move = 4;   }  }  break;  case MotionEvent.ACTION_UP:  //記錄之前的數組  int[][] temp = new int[4][4];  for (int i = 0; i < 4; i++) {   for (int j = 0; j < 4; j++) {   temp[i][j] = values[i][j];   }  }  switch (move) {   case 1:   left();   break;   case 2:   right();   break;   case 3:   up();   break;   case 4:   down();   break;  }  setValues();  if (move != -1) {   //比對當前的數組   for (int i = 0; i < 4; i++) {   for (int j = 0; j < 4; j++) {    if (values[i][j] != temp[i][j]) {    addCard();    return true;    }   }   }  }  //判斷游戲勝利還是結束4  if (isWin()) {   Toast.makeText(getContext(), "游戲勝利", Toast.LENGTH_SHORT).show();  }  if (isOver()) {   this.removeAllViews();   TextView tv = new TextView(getContext());   tv.setText("游戲結束,點擊從新開始");   this.addView(tv);   tv.setOnClickListener(new OnClickListener() {   @Override   public void onClick(View v) {    newGame();   }   });  }  break; } return true; } private void addCard() { while (true) {  int j = (int) (Math.random() * 16);  if (values[j / 4][j % 4] == 0) {  values[j / 4][j % 4] = 2;  cards[j / 4][j % 4].setNumber(2);  return;  } } } public void left() { //取出 4個 集合 for (int i = 0; i < 4; i++) {  List<Integer> list = new ArrayList<>();  for (int j = 0; j < 4; j++) {  int value = values[i][j];  if (value != 0)   list.add(value);  }  //比較  Log.e("TAG", list.toString());  if (list.size() == 0)  continue;  else if (list.size() == 1) {  values[i][0] = list.get(0);  for (int j = 0; j < 3; j++) {   values[i][j + 1] = 0;  }  } else if (list.size() == 2) {  if (list.get(0).equals(list.get(1))) {   values[i][0] = list.get(0) * 2;   //三個值補0   for (int j = 0; j < 3; j++) {   values[i][j + 1] = 0;   }  } else {   values[i][0] = list.get(0);   values[i][1] = list.get(1);   values[i][2] = 0;   values[i][3] = 0;  }  } else if (list.size() == 3) {  if (list.get(0).equals(list.get(1))) {   values[i][0] = list.get(0) * 2;   values[i][1] = list.get(2);   values[i][2] = 0;   values[i][3] = 0;  } else if (list.get(1).equals(list.get(2))) {   values[i][0] = list.get(0);   values[i][1] = list.get(2) * 2;   values[i][2] = 0;   values[i][3] = 0;  } else {   values[i][0] = list.get(0);   values[i][1] = list.get(1);   values[i][2] = list.get(2);   values[i][3] = 0;  }  } else {  if (list.get(0).equals(list.get(1))) {   if (list.get(3).equals(list.get(2))) {   values[i][0] = list.get(0) * 2;   values[i][1] = list.get(2) * 2;   values[i][2] = 0;   values[i][3] = 0;   } else {   values[i][0] = list.get(0) * 2;   values[i][1] = list.get(2);   values[i][2] = list.get(3);   values[i][3] = 0;   }  } else {   //1和2不相等   //先比對2 3 相等，不等   if (list.get(1).equals(list.get(2))) {   values[i][0] = list.get(0);   values[i][1] = list.get(1) * 2;   values[i][2] = list.get(3);   values[i][3] = 0;   } else {   if (list.get(2).equals(list.get(3))) {    values[i][0] = list.get(0);    values[i][1] = list.get(1);    values[i][2] = list.get(2) * 2;    values[i][3] = 0;   }   }  }  } } } private void delete() { // Log.e("TAG", "--------------------執行");// //遍歷// for (int i = 0; i < 4; i++) {//  for (int j = 0; j < 3; j++) {//  Card card = cards[i][j];//  Log.e("TAG", "i:" + i + " j:" + j + " num:" + card.getNumber());//  if (card.getNumber() == 0) {//   boolean isSub = false;//   for (int k = j; k < 3; k++) {//   cards[i][k].setNumber(cards[i][k + 1].getNumber());//   if (cards[i][k + 1].getNumber() != 0) {//    isSub = true;//   }//   }//   if (isSub)//   j--;//   cards[i][3].setNumber(0);//  } else if (card.getNumber() == cards[i][j + 1].getNumber()) {//   card.upLv();//   cards[i][j + 1].setNumber(0);//   //后面的往前搬//   for (int k = j + 1; k < 3; k++) {//   cards[i][k].setNumber(cards[i][k + 1].getNumber());//   }//   cards[i][3].setNumber(0);//   j--;//  }//  }// }// for (int j = 0; j < 4; j++) { //列//  for (int i = 3; i >= 1; i--) {//  Card card = cards[j][i];//  if (card.getNumber() == 0) {//   //全行左移//   //要將//   //如果是最后一個，不需要理會//   continue;//  } else {//   //判斷左邊一個//   if (cards[j][i - 1].getNumber() == 0) {//   //從i --》i-1//   for (int k = i - 1; k < 3; k++) {//    cards[j][k].setNumber(cards[j][k + 1].getNumber());//   }//   cards[j][3].setNumber(0);////   } else if (cards[j][i - 1].getNumber() == card.getNumber()) {//   cards[j][i - 1].upLv();//   card.setNumber(0);//   for (int k = i; k < 3; k++) {//    cards[j][k].setNumber(cards[j][k + 1].getNumber());//   }//   cards[j][3].setNumber(0);//   }//  }//  }// } } public void right() { mirrorH(); left(); mirrorH(); } private void mirrorH() { for (int i = 0; i < 4; i++) {  int temp = values[i][0];  values[i][0] = values[i][3];  values[i][3] = temp;  temp = values[i][1];  values[i][1] = values[i][2];  values[i][2] = temp; } } public void down() { //左旋 int[][] temp = new int[4][4]; for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  temp[i][j] = values[3 - j][i];  } } values = temp; left(); temp = new int[4][4]; for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  temp[i][j] = values[j][3 - i];  } } values = temp; } public void up() { mirrorV(); down(); mirrorV(); } private void mirrorV() { for (int j = 0; j < 4; j++) {  int temp = values[0][j];  values[0][j] = values[3][j];  values[3][j] = temp;  temp = values[1][j];  values[1][j] = values[2][j];  values[2][j] = temp; } } public void setValues() { for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  System.out.print(values[i][j] + " ");  cards[i][j].setNumber(values[i][j]);  }  System.out.println(); } } public boolean isWin() { for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  if (values[i][j] == 2048)   return true;  } } return false; } public boolean isOver() { for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  if (values[i][j] == 0)   return false;  } } //滿了 for (int i = 0; i < 4; i++) {  for (int j = 0; j < 4; j++) {  int value = values[i][j];  if (i > 1 && value == values[i - 1][j])   return false;  else if (i < 3 && value == values[i + 1][j])   return false;  else if (j > 1 && value == values[i][j - 1])   return false;  else if (j < 3 && value == values[i][j + 1])   return false;  } } return true; }}