Question

I am an android novice and have been experimenting with SQLite and Android. I am able to get queries and use the cursor results, but I can’t seem to get this the following code to work:

This is my Query statement, where queryWhere = “MyObject=”1″” and DATABASE_TABLE_TOQUERY = “FavoriteObjects”. These are all okay when viewed in an SQLite database viewer and it also returns a correct result if I execute the query using my SQLite database viewer.

public long findObject(String[] keys, String[] values,String DATABASE_TABLE_TOQUERY){
    try {
        if(keys.length<0 || keys.length!=values.length)
            System.exit(-1);
        String queryWhere = keys[0]+"=\""+values[0]+"\"";
        for(int i=1;i<keys.length;i++) {
            queryWhere+=" AND "+keys[i]+"=\""+values[i]+"\"";
        }
        Cursor mCursor = mDb.query(true, DATABASE_TABLE_TOQUERY, null, 
                    queryWhere, null, null, null, null, null);
        if (mCursor != null && mCursor.getCount()>0)
            return Long.parseLong(mCursor.getString(mCursor.getColumnIndex(KEY_ROWID)));

    }catch (SQLException e) {
        return -1;
    }
    return -1;
}

When I get the results after executing the query statement, Cursor mCursor has at least one row, but when I access that row using mCursor.getString(X), it throws a weird error:

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

If I check mCursor.getColumnIndex(KEY_ROWID), I get a 0 value (which is correct). Anyone have any suggestions?

Thanks!
Jon

Answer 1

Try

mCursor.moveToNext();