Android 项目贪吃蛇最初版本实现。

1. DesktopView.java是地图文件，用来画出桌面的文件
2. Food.java食物类文件 
3. Rock.java石头类文件 
4. Snake.java蛇类文件 
5. SnakeActivity.java主要Activity 
6. SnakeView.java画出蛇的文件

代码如下

package mars.com;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.WindowManager;

public class SnakeActivity extends Activity {
   
   
  public static final int CELL = 20;// 一个方格像素为20
  public static WindowManager windowManager;
  public static int SCREEN_WIDTH;// 屏幕宽度
  public static int SCREEN_HEIGHT;// 屏幕高度
  public static int NUMBER;// 横向个数

  SnakeView snakeView;
  Snake snake;
  Food food;
  Rock rock;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.initVars();
    snake = new Snake();
    food = new Food();
    rock = new Rock();
    snakeView = new SnakeView(getApplicationContext(), snake, food, rock);
    snakeView.setFocusable(true);
    setContentView(snakeView);
    snake.start();
  }

  @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
      finish();
      System.exit(0);
      break;
    }
    return super.onKeyDown(keyCode, event);
  }

  private void initVars() {
    windowManager = SnakeActivity.this.getWindowManager();
    SCREEN_HEIGHT = windowManager.getDefaultDisplay().getHeight();
    SCREEN_WIDTH = windowManager.getDefaultDisplay().getWidth();
    NUMBER = SCREEN_WIDTH / CELL;
  }
}

Snake类文件

package mars.com;

import java.util.ArrayList;
import java.util.LinkedList;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Point;

public class Snake {
   
   
  // 方向按钮
  public static final int UP = 1;
  public static final int DOWN = -1;
  public static final int LEFT = -2;
  public static final int RIGHT = 2;
  public static int oldDirection = RIGHT;
  public static int newDirection = RIGHT;
  public static LinkedList<Point> snakeBody = new LinkedList<Point>();
  private Point snakeTail;
  private boolean LIFE = true;