写一个扫雷游戏，开发软件Android studio，语言Java

以下是一个简单的扫雷游戏示例代码，使用Android Studio开发，使用Java语言编写。

activity_main.xml文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/timeView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_marginTop="8dp"
        android:textSize="20sp"
        android:text="已用时间：0分0秒"
        android:layout_centerHorizontal="true"/>

    <GridView
        android:id="@+id/gridView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/timeView"
        android:numColumns="10"
        android:horizontalSpacing="1dp"
        android:verticalSpacing="1dp"
        android:stretchMode="columnWidth"
        android:gravity="center"/>

    <LinearLayout
        android:id="@+id/button_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true">

        <Button
            android:id="@+id/startGame"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="开始游戏"
            android:layout_weight="1"/>

        <Button
            android:id="@+id/btn_flippe"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="翻开"
            android:layout_weight="1"/>

        <Button
            android:id="@+id/btn_flag"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="标记"
            android:layout_weight="1"/>

    </LinearLayout>

</RelativeLayout>

MainActivity.java文件：

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.GridView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private static final int MESSAGE_UPDATE_TIME = 1;
    private int gameTime = 0;
    private boolean gameStarted = false;

    private GridView gridView;
    private Button startGameButton;
    private Button flippeButton;
    private Button flagButton;
    private TextView timeView;

    private MineSweeperAdapter adapter;
    private MineSweeperGame game;

    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (msg.what == MESSAGE_UPDATE_TIME) {
                timeView.setText("已用时间：" + gameTime / 60 + "分" + gameTime % 60 + "秒");
                gameTime++;
                if (gameStarted) {
                    handler.sendEmptyMessageDelayed(MESSAGE_UPDATE_TIME, 1000);
                }
            }
        }
    };

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

        gridView = findViewById(R.id.gridView);
        startGameButton = findViewById(R.id.startGame);
        flippeButton = findViewById(R.id.btn_flippe);
        flagButton = findViewById(R.id.btn_flag);
        timeView = findViewById(R.id.timeView);

        adapter = new MineSweeperAdapter(this);
        game = new MineSweeperGame(10, 10, 10);
        gridView.setAdapter(adapter);
        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (!gameStarted) {
                    gameStarted = true;
                    handler.sendEmptyMessage(MESSAGE_UPDATE_TIME);
                }
                if (game.isGameOver()) {
                    Toast.makeText(MainActivity.this, "游戏已结束", Toast.LENGTH_SHORT).show();
                    return;
                }
                int row = position / game.getColumns();
                int col = position % game.getColumns();
                if (game.flippe(row, col)) {
                    adapter.updateView();
                    if (game.isGameWin()) {
                        Toast.makeText(MainActivity.this, "游戏胜利", Toast.LENGTH_SHORT).show();
                        handler.removeMessages(MESSAGE_UPDATE_TIME);
                    }
                } else {
                    Toast.makeText(MainActivity.this, "游戏失败", Toast.LENGTH_SHORT).show();
                    handler.removeMessages(MESSAGE_UPDATE_TIME);
                }
            }
        });
        startGameButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                game.reset();
                adapter.updateView();
                gameTime = 0;
                gameStarted = false;
                timeView.setText("已用时间：0分0秒");
                handler.removeMessages(MESSAGE_UPDATE_TIME);
            }
        });
        flippeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                game.setMode(MineSweeperGame.Mode.FLIPPE);
                flippeButton.setBackgroundColor(getResources().getColor(android.R.color.holo_green_light));
                flagButton.setBackgroundColor(getResources().getColor(android.R.color.white));
            }
        });
        flagButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                game.setMode(MineSweeperGame.Mode.FLAG);
                flagButton.setBackgroundColor(getResources().getColor(android.R.color.holo_red_light));
                flippeButton.setBackgroundColor(getResources().getColor(android.R.color.white));
            }
        });
    }

    private class MineSweeperAdapter extends BaseAdapter {

        private Context context;

        public MineSweeperAdapter(Context context) {
            this.context = context;
        }

        @Override
        public int getCount() {
            return game.getRows() * game.getColumns();
        }

        @Override
        public Object getItem(int position) {
            int row = position / game.getColumns();
            int col = position % game.getColumns();
            return game.getCell(row, col);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(context);
                imageView.setLayoutParams(new GridView.LayoutParams(GridView.LayoutParams.MATCH_PARENT, 128));
                imageView.setScaleType(ImageView.ScaleType.CENTER);
                imageView.setPadding(4, 4, 4, 4);
            } else {
                imageView = (ImageView) convertView;
            }
            int row = position / game.getColumns();
            int col = position % game.getColumns();
            int cell = game.getCell(row, col);
            if (cell == MineSweeperGame.CELL_UNCOVERED) {
                int mineCount = game.getAdjacentMines(row, col);
                imageView.setImageResource(mineCount == 0 ? R.drawable.ic_empty : R.drawable.ic_number);
                imageView.setBackgroundResource(android.R.color.white);
            } else if (cell == MineSweeperGame.CELL_FLAG) {
                imageView.setImageResource(R.drawable.ic_flag);
                imageView.setBackgroundResource(android.R.color.white);
            } else if (cell == MineSweeperGame.CELL_MINE) {
                imageView.setImageResource(R.drawable.ic_mine);
                imageView.setBackgroundResource(android.R.color.white);
            } else {
                imageView.setImageResource(R.drawable.ic_covered);
                imageView.setBackgroundResource(android.R.color.white);
            }
            return imageView;
        }

        public void updateView() {
            notifyDataSetChanged();
        }
    }
}

在该示例代码中，我们使用了`GridView`来展示扫雷游戏的棋盘，使用`Handler`和`Message`实现了已用时间的显示和更新，使用`Adapter`和`View`实现了UI界面的更新和显示。通过`reset()`方法重置游戏，通过`isGameOver()`和`isGameWin()`方法实现了游戏结束的判断，通过`flippe()`和`flag()`方法实现了游戏的翻开和标记操作。

需要注意的是，这里的示例代码只是一个简单的扫雷游戏实现，并不完整和健壮，实际开发中还需要考虑更多的细节和异常情况。