Home/ Questions/Q 6989405
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-27T19:12:27+00:00

I got a little problem with my SQLite database in my app. My goal

  • 0

I got a little problem with my SQLite database in my app.
My goal is to insert a row into my database if it’s not exist, otherwise to update the row.

How can I check if the row with the given condition exists?

I tried:

Cursor cursor = dbAdapter.query(dbName, null, "xcoord="+xcoord+" AND ycoord="+ycoord+" AND mac='"+mac+"'"+" AND ssid='"+ssid+"'", null, null, null, null);
cursor.isNull(cursor.getColumnIndex("ssid"));

and then to check if the cursor is null? But so I got this SQLException:

FATAL EXCEPTION: main

android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 0

at android.database.AbstractCursor.checkPosition(AbstractCursor.java:580)

Thanks for help.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Before working with a cursor in anyway I always do an if (cursor != null && cursor.moveToFirst())

    If that evaluates to false, you either don’t have a table, or you don’t have a record.

    • 0