CODEWITHSUNDEEP
androidsqlite
Ogre
Ogre

Reputation: 861

Issue with SQLite query in Android

I have an SQLite database where I have a table named object_zone. This table has two columns, of type integer: object and zone.

If I copy the database onto my computer, and query it with:

SELECT object FROM object_zone WHERE zone = 791

it returns several rows.

However, on my Android phone, if I query it with: 

Cursor cursor = database.query( "object_zone", new String[] {"object"}, "zone = ?", new String[] { Long.toString( zoneId )}, null, null, null);

Where zoneId = 791, the cursor contains 0 rows. How have I stuffed up the usage of the query function?

Upvotes: 0

Views: 406

Answers (2)

Pedro Fraca
Pedro Fraca

Reputation: 185

Maybe the problem here is the casting to string. Can you try the rawQuery method with the same sql that you executes on your computer?

Upvotes: 0

Dan Breslau
Dan Breslau

Reputation: 11522

Did you call cursor.moveToFirst() on the returned cursor? Without having called that, cursor.getCount() may erroneously return 0 (or perhaps it's -1...)

I've been tripped up by this a few times...

Upvotes: 1

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