如何获取 sqflite Flutter 数据库的正确路径？

Question

我正尝试在 Android 上使用 Flutter 创建本地数据库。我最初创建了一个具有特定目录的目录，该目录运行良好，然后我从设备（不是 AVD）中卸载了应用程序然后当我尝试使用新文件路径目录创建数据库时，我得到了这个期望：

Exception has occurred.
SqfliteDatabaseException (DatabaseException(near ")": syntax error (Sqlite code 1 SQLITE_ERROR): , while compiling: CREATE TABLE KPoint (id INTEGER PRIMARY KEY,subject INTEGER,module INTEGER,type TEXT,definition TEXT,), **(OS error - 2:No such file or directory))** sql 'CREATE TABLE KPoint (id INTEGER PRIMARY KEY,subject INTEGER,module INTEGER,type TEXT,definition TEXT,)' args []})

(OS 错误 - 2:No 这样的文件或目录))

这是我的 init 块，它首先在单例中运行：

import 'package:path_provider/path_provider.dart';
      initDB() async {
        Directory documentsDirectory = await getApplicationDocumentsDirectory();
        print(documentsDirectory.uri);
        String path = join(documentsDirectory.path, "database.db");
        return await openDatabase(
          path,
          version: 1,
          onOpen: (db) {},
          onCreate: (Database db, int version) async {
            print('Creating db...');
            await db.execute("CREATE TABLE KPoint ("
                "id INTEGER PRIMARY KEY,"
                "subject INTEGER,"
                "module INTEGER,"
                "type TEXT,"
                "definition TEXT,"
                ")");
          },
          onUpgrade: (db, oldVersion, newVersion) {
            print('Upgrade has been called...');
          },
        );
      }

我需要将什么目录路径传递给 openDatabase(..) 是可以接受的？

Answer 1

我认为最后的“,”是不必要的。

来自

"definition TEXT,"

至

"definition TEXT"

如何获取 sqflite Flutter 数据库的正确路径？

How to get the correct path for sqflite Flutter database?

database

directory

path

flutter

sqflite