//設置翻開狀態(tài)
public void setNumberOfSurroundingMines(int number) {
 this.setBackgroundResource(R.drawable.selected);//設置翻開背景圖
 updateNumber(number);//設置周圍雷數(shù)
}

//添加雷塊標識
public void setMineIcon() {
 this.setBackgroundResource(R.drawable.dl);
}

//添加標記標識
public void setFlagIcon(boolean enabled) {

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

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

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

//翻開方塊
public void OpenBlock() {
 if (!isCovered) {
 return;
 }
 isCovered = false;
 //如果為雷設置地雷標識
 if (hasMine()) {
 setMineIcon();
 } else {
 setNumberOfSurroundingMines(numberOfMinesInSurrounding);//根據(jù)周圍雷數(shù)設置翻開狀態(tài)及顯示數(shù)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);
 }

 /*根據(jù)不同難度返回相應參數(shù)*/
 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
 //接收難度界面?zhèn)骰氐膮?shù)并將其傳回主界面處理
 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();
 }
 }

 //點擊新游戲按鈕，將結果傳回主界面
 public void NewGame(View view) {
 Intent data = new Intent();
 data.putExtra("result", "newgame");
 setResult(1, data);
 finish();
 }

 //點擊改變難度按鈕，啟動難度選擇界面
 public void ChangeLevel(View view) {
 Intent level = new Intent(MenuActivity.this, LevelActivity.class);
 startActivityForResult(level, 2);
 }

 //點擊游戲記錄按鈕，顯示記錄
 public void Record(View view) {
 String filename = getExternalCacheDir().getAbsolutePath() + "/gamerecord.txt";//文件路徑
 File file = new File(filename);
 Scanner inputStream = null;
 FileInputStream fis = null;
 BufferedReader br = null;
 String str;
 String message = " " + "級別" + " " + "勝負" + "  " + "時間\n";
 //若文件不存在，顯示暫無記錄
 if (!file.exists()) {
  new AlertDialog.Builder(this)
   .setMessage("暫無記錄！")
   .setNegativeButton("確定", null)
   .create().show();
 }
 else {
  try {
  //讀取文件記錄并生成對話框顯示
  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("確定", null)
   .create().show();
  fis.close();
  br.close();
  } catch (FileNotFoundException e) {
  e.printStackTrace();
  } catch (IOException e) {
  e.printStackTrace();
  } finally {
  inputStream.close();
  }
 }
 }

 //點擊返回按鈕，回傳結果到主界面
 public void Return1(View view) {
 Intent data = new Intent();
 data.putExtra("result", "start");
 setResult(1, data);
 finish();
 }
}