Question

I have written method which should return string with data from select query, but it doesn’t work perfectly as I would like, here is method:

public String selectorDanych(String kolumna, String log){
String test = "Select "+ kolumna + " from "+ Usr_TABLE+ " where "+colLogin + " ='" +log+"';";
Cursor cursor2 = sqLiteDatabase.rawQuery(test, null);
return cursor2.toString();
}

it returns some kind of string but, it is not the thing I want [ the string it returns is something like “SQLite.database.@” etc

Answer 1

Rewrite your code as

public String selectorDanych(String kolumna, String log){
    String test = "Select "+ kolumna + " from "+ Usr_TABLE+ " where "+colLogin + " ='" +log+"';";
    Cursor cursor2 = sqLiteDatabase.rawQuery(test, null);

//Write these codes
if(cursor2.moveToFirst()) {
   cursor2.close();             //You should close your cursor
   return cursor2.getString(0); //index of your kolumna field
} else {
   cursor2.close();             //You should close your cursor
   return null; //Return some error msg, to notify that data not found
}
}