如何在我的android应用程序中保存打开的关卡

import android.content.SharedPreferences;

private static final String PREFS_NAME = "GameSettings";
private static final String KEY_LAST_LEVEL = "lastLevel";

public void saveLastLevel(int level) {
    SharedPreferences sharedPreferences = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt(KEY_LAST_LEVEL, level);
    editor.apply();
}

public int getLastLevel() {
    SharedPreferences sharedPreferences = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
    return sharedPreferences.getInt(KEY_LASTID_LEVEL, 1); // 默认关卡为1
}

// 保存当前关卡
saveLastLevel(currentLevel);

// 读取上次打开的关卡
int lastLevel = getLastLevel();

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class GameDatabaseHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "game.db";
    private static final int DATABASE_VERSION = 1;
    public static final String TABLE_LEVELS = "levels";
    public static final String COLUMN_ID = "_id";
    public static final String COLUMN_LAST_LEVEL = "last_level";

    public GameDatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        String createTableQuery = "CREATE TABLE " + TABLE_LEVELS + " (" +
                COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                COLUMN_LAST_LEVEL + " INTEGER)";
        db.execSQL(createTableQuery);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_LEVELS);
        onCreate(db);
    }
}

private GameDatabaseHelper dbHelper;

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

    dbHelper = new GameDatabaseHelper(this);
}

public void saveLastLevel(int level) {
    SQLiteDatabase db = dbHelper.getWritableDatabase();
    ContentValues values = new ContentValues();
    values.put(GameDatabaseHelper.COLUMN_LAST_LEVEL, level);
    db.insertWithOnConflict(GameDatabaseUIHelper.TABLE_LEVELS, null, values, SQLiteDatabase.CONFLICT_REPLACE);
    db.close();
}

public int getLastLevel() {
    SQLiteDatabase db = dbHelper.getReadableDatabase();
    Cursor cursor = db.query(GameDatabaseHelper.TABLE_LEVELA, new String[]{GameDatabaseHelper.COLUMN_LAST_LEVEL}, null, null, null, null, null);
    int lastLevel = 1; // 默认关卡为1
    if (cursor.moveToFirst()) {
        lastLevel = cursor.getInt(cursor.getColumnIndex(GameDatabaseHelper.COLUMN_LAST_LEVEL));
    }
    cursor.close();
    db.close();
    return lastLevel;
}

// 保存当前关卡
saveLastLevel(currentLevel);

// 读取上次打开的关卡
int lastLevel = getLastLevel();