Android SQLite db.update() add values [duplicate]

Answer 1

Not exactly sure what you want to do but perhaps:

 public void Trasf() { 

        String value = Scegli.getText().toString();

        // add two strings or numbers together in the .put method
        cv.put(CTable.PREL, mI.getText().toString() + " " + oldString); // for string
        cv.put(CTable.PREL, int_new + int_old); // adding numbers

        SQLiteDatabase db = mHelper.getWritableDatabase();

        db.update(CTable.TABLE_NAME, cv, CTable.NO + " = ?",  new String[] { value });

        db.close(); }
    }