Android实现扫雷小游戏

//设置翻开状态
public void setNumberOfSurroundingMines(int number) {
 this.setBackgroundResource(R.drawable.selected);//设置翻开背景图
 updateNumber(number);//设置周围雷数
}

//添加雷块标识
public void setMineIcon() {
 this.setBackgroundResource(R.drawable.dl);
}

//添加标记标识
public void setFlagIcon(boolean enabled) {

 if (!enabled) {
 this.setBackgroundResource(R.drawable.hq);
 } else {
 this.setTextColor(Color.BLACK);
 }
}

//清除所有标记
public void clearAllIcons() {
 this.setText("");
 this.setTextColor(R.drawable.unselected);
}

private void setBoldFont() {
 this.setTypeface(null, Typeface.BOLD);
}

//翻开方块
public void OpenBlock() {
 if (!isCovered) {
 return;
 }
 isCovered = false;
 //如果为雷设置地雷标识
 if (hasMine()) {
 setMineIcon();
 } else {
 setNumberOfSurroundingMines(numberOfMinesInSurrounding);//根据周围雷数设置翻开状态及显示数字
 }
}

package com.example.saolei;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class LevelActivity extends AppCompatActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_level);
 }

 /*根据不同难度返回相应参数*/
 public void Easy(View view) {
 Intent data = new Intent();
 data.putExtra("result", "easy");
 setResult(2, data);
 finish();
 }

 public void Hard(View view) {
 Intent data = new Intent();
 data.putExtra("result", "hard");
 setResult(2, data);
 finish();
 }

 public void Return(View view) {
 Intent data = new Intent();
 data.putExtra("result", "");
 setResult(2, data);
 finish();
 }
}

package com.example.saolei;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class MenuActivity extends AppCompatActivity {
 String t = "easy";
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_menu);
 }

 @Override
 //接收难度界面传回的参数并将其传回主界面处理
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);
 if (resultCode == 2) {
  Intent level = new Intent();
  t = data.getStringExtra("result");
  level.putExtra("result", t);
  setResult(1, data);
  finish();
 }
 }

 //点击新游戏按钮，将结果传回主界面
 public void NewGame(View view) {
 Intent data = new Intent();
 data.putExtra("result", "newgame");
 setResult(1, data);
 finish();
 }

 //点击改变难度按钮，启动难度选择界面
 public void ChangeLevel(View view) {
 Intent level = new Intent(MenuActivity.this, LevelActivity.class);
 startActivityForResult(level, 2);
 }

 //点击游戏记录按钮，显示记录
 public void Record(View view) {
 String filename = getExternalCacheDir().getAbsolutePath()   "/gamerecord.txt";//文件路径
 File file = new File(filename);
 Scanner inputStream = null;
 FileInputStream fis = null;
 BufferedReader br = null;
 String str;
 String message = " "   "级别"   " "   "胜负"   "  "   "时间\n";
 //若文件不存在，显示暂无记录
 if (!file.exists()) {
  new AlertDialog.Builder(this)
   .setMessage("暂无记录！")
   .setNegativeButton("确定", null)
   .create().show();
 }
 else {
  try {
  //读取文件记录并生成对话框显示
  inputStream = new Scanner(new FileInputStream(filename));
  int i = 1;
  fis = new FileInputStream(filename);
  br = new BufferedReader(new InputStreamReader(fis));
  while ((str = br.readLine()) != null) {
   message = message   (i   ". "   str   "\n");
   i  ;
  }
  new AlertDialog.Builder(this)
   .setMessage(message)
   .setNegativeButton("确定", null)
   .create().show();
  fis.close();
  br.close();
  } catch (FileNotFoundException e) {
  e.printStackTrace();
  } catch (IOException e) {
  e.printStackTrace();
  } finally {
  inputStream.close();
  }
 }
 }

 //点击返回按钮，回传结果到主界面
 public void Return1(View view) {
 Intent data = new Intent();
 data.putExtra("result", "start");
 setResult(1, data);
 finish();
 }
}