Can't manage an instance of Cursor for my SQLite database

开发者_如何学编程I've successfully copied an existing SQLite database to android, as it was recommended here http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/ and now when i'm writing

Cursor cur = db.db.query("student", null, null, null, null, null, null);

The app breaks trying to create a cursor. I'm sure there is a "student" table. Could you help me with suggesting any reasons of why this happens, please?

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I just guessing, but db.db.query() looks wrong... you sure you didn't mean db.query() ?

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A more collaborative answer than my comment. I would think you'll be fine by doing something like this tutorial does http://droidreign.com/2010/10/dev-tutorials-android-sqlite-database-basics/ . About half the way down is the part you are looking for.

Edit: I guess the problem with your query is that you ask for none of the columns (second parameter in your query). It should probably be at least one of your columns.