方法openOrCreateDatabase(String，int，null)是未定义的 [英] The method openOrCreateDatabase(String, int, null) is undefined

问题描述

我正在尝试如下打开数据库:

I'm trying to open database as follows :

SQLiteDatabase myDatabase;
myDatabase = openOrCreateDatabase("sudoku.db", Context.MODE_PRIVATE, null);

当我在Service类中实现此代码时，它工作正常，但是当我尝试在GeneraterThread类的onPostExecute事件处理程序中实现AsyncTask时，实现以下错误:

This code works fine when I implement it in the Service class, but when I try to implement this in the onPostExecute eventhandler of the GeneraterThread class,implementing AsyncTask, I get the following error :

对于类型GeneratorrThread

推荐答案

您似乎正在尝试在不具有该方法(而Service类具有该方法)的GeneraterThread实例上调用openOrCreateDatabase方法.您可能会传递对Context对象的引用并在其上调用方法.或使用SQLiteDatabase.openOrCreateDatabase()的静态方法.

It looks like you're trying to invoke openOrCreateDatabase method on GeneraterThread instance which doesn't have the method (and Service class has the method). You probably may pass in a reference to a Context object and invoke the method on it. Or use static method of SQLiteDatabase.openOrCreateDatabase().

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