Question

i got this error :

The method query(String, String[], String, String[], String, String, String) in the type SQLiteDatabase is not applicable for the arguments (String, String[], String, String, null, null, null)

and the code responsible:

public Cursor getDomanda(String id) {
            List<categorie> categorie = new ArrayList<categorie>();

            Cursor cursor = database.query(MySQLiteHelper.TABLE_SONDAGGI,
                allCategorieColumns, MySQLiteHelper.COLUMN_ID + "=", id, null, null, null);

            cursor.moveToFirst();
            while (!cursor.isAfterLast()) {
              categorie categoria = cursorToCategorie(cursor);
              categorie.add(categoria);
              cursor.moveToNext();
            }
            // Make sure to close the cursor
           // cursor.close();
            return cursor;
          }

on the other side:

long strcategory = getIntent().getExtras().getLong("categoriaId"); 
Cursor values = datasource.getDomanda(Long.toString(strcategory));

what i’m doing wrong?
i need to convert the long to String[] but what the heck is a String[] ?:D
and by the way…is the query right?
i mean

database.query(MySQLiteHelper.TABLE_SONDAGGI,
                    allCategorieColumns, MySQLiteHelper.COLUMN_ID + "=", id, null, null, null);

is

select from tableSondaggi where _id = $id ?

Answer 1

The 4th parameter must be a String[], not a String.

You need to replace id by new String[] { id } to create an array composed of one single element (your id).

  Cursor cursor = database.query(MySQLiteHelper.TABLE_SONDAGGI,
            allCategorieColumns, MySQLiteHelper.COLUMN_ID + "=", new String[] { id }, null, null, null);