我找不到在其中創建數據庫適配器的數據庫文件和表。但我可以看到數據正在保存，但我無法在我的目錄中找到我的 db 文件。但我可以保存條目并在我的屏幕上查看。這是我正在創建數據庫的 DBAdapter 類。public class DBAdapter {    private static final String DB_NAME = "clientList.db";    private static final int DB_VERSION = 1;    private static final String TABLE_CLIENT = "CLIENT";    private static final String COLUMN_CLIENT_ID = "CLIENT_ID";    private static final String  COLUMN_CLIENT_NAME = "CLIENT_NAME";    private static final String query = "create table test_1 " + " (COLUMN_CLIENT_ID integer primary key, COLUMN_CLIENT_NAME text)";    private Context context;    private SQLiteDatabase sqliteDatabase;    private static DBAdapater dbAdapaterInstance;    private DBAdapater(Context context){        this.context = context;        sqliteDatabase = new DatabaseHelper(this.context,DB_NAME,null,DB_VERSION).getWritableDatabase();    }    public static DBAdapater getDbAdapaterInstance(Context context){        if(dbAdapaterInstance == null){            dbAdapaterInstance = new DBAdapater(context);        }        return dbAdapaterInstance;    }    public boolean insert(int clientId , String name ){        ContentValues contentValues = new ContentValues();        contentValues.put(COLUMN_CLIENT_ID,clientId);        contentValues.put(COLUMN_CLIENT_NAME,name);        return sqliteDatabase.insert(TABLE_CLIENT,null,contentValues)>0;    }    public boolean delete(int ClientID){        return sqliteDatabase.delete(TABLE_CLIENT, COLUMN_CLIENT_ID + "=" + ClientID,null)>0;    }    public boolean modify(int ClientID , String newClient){    ContentValues contentValues = new ContentValues();    contentValues.put(COLUMN_CLIENT_NAME,newClient);    return sqliteDatabase.update(TABLE_CLIENT,contentValues,COLUMN_CLIENT_ID + "=" + ClientID,null)>0;    }