Android - If then doesn't work..?

Question

I am hitting a huge wall here. I got this code which checks on database result :

chosenSlotDAO.open();
        Log.d("id", chosenSlotDAO.getId());
        Log.d("isParked", chosenSlotDAO.getIsParked());
        Log.d("parkedRow", chosenSlotDAO.getParkedRow());
        Log.d("selectedSlot", chosenSlotDAO.getSelectedSlot());
        String idStatus = chosenSlotDAO.getId();
        String isParkedStatus = chosenSlotDAO.getIsParked();
        String parkedRowStatus = chosenSlotDAO.getParkedRow();
        String selectedSlotStatus = chosenSlotDAO.getSelectedSlot();
        final String outputA = this.getOutput(this, slotA);

        if(idStatus == id && isParkedStatus == isParked && parkedRowStatus != parkedA && selectedSlotStatus != slotA)
        {
            arriveTView.setText(alreadyParked + chosenSlotDAO.getParkedRow());
        }
        else if(idStatus == id && isParkedStatus == isNotParked && parkedRowStatus != parkedA && selectedSlotStatus != slotA)
        {
            Toast.makeText(getApplicationContext(), 
                wrongParkingRow, 
                Toast.LENGTH_LONG).show();
            chosenSlotDAO.updateSlot(id, slotA, parkedA, isParked);
        }
        else if(idStatus == id && isParkedStatus == isParked && parkedRowStatus == parkedA && selectedSlotStatus == slotA)
        {
            chosenSlotDAO.updateSlot(id, slotA, setEmpty, isNotParked);

            dbUpdateAdd.execute(slotA);
            Intent myIntent = new Intent(ParkAArrive.this, ParkLeaving.class);
            ParkAArrive.this.startActivity(myIntent);
        }
        else if(outputA.isEmpty())
        {
            arriveTView.setText(isFull);
        }

        else
        {
            Toast.makeText(getApplicationContext(), 
                    nowParked, 
                    Toast.LENGTH_LONG).show();
            chosenSlotDAO.updateSlot(id, slotA, parkedA, isParked);
            arriveTView.setText(chosenSlotDAO.getSelectedSlot());
            dbUpdate.execute(slotA);
        }

The class is started by tapping an NFC tag.

LogCat returns :

06-15 04:35:10.818: D/id(12294): 1
06-15 04:35:10.818: D/isParked(12294): 1
06-15 04:35:10.819: D/parkedRow(12294): ParkedA
06-15 04:35:10.819: D/selectedSlot(12294): SlotA
06-15 04:35:10.829: D/link(12294): http://parkit.byethost9.com/db_show_slot.php?slot_name=SlotA
06-15 04:35:11.681: D/line(12294): 14

It clearly shows that user is parked, parkedRow is ParkedA, and SlotA is SlotA. But the if does not work.

But when I start the activity again, nothing except

else if(outputA.isEmpty())
        {
            arriveTView.setText(isFull);
        }

        else
        {
            Toast.makeText(getApplicationContext(), 
                    nowParked, 
                    Toast.LENGTH_LONG).show();
            chosenSlotDAO.updateSlot(id, slotA, parkedA, isParked);
            arriveTView.setText(chosenSlotDAO.getSelectedSlot());
            dbUpdate.execute(slotA);
        }

works.

Where in the code am I doing wronggg?? Tell me if I left any required info untold..

UPDATE : It seems that I need to change my code so that it can compare String, and yes it's the problem I'm facing.

You should reformulate you question. – Anis LOUNIS aka AnixPasBesoin Jun 14 '15 at 21:50 — Anis LOUNIS aka AnixPasBesoin, Jun 14 '15 at 21:50

score 1 · Accepted Answer · edited May 23 '17 at 10:26

1

You should use the equals method to compare String objects instead of the == operator.

See the following question for a full explanation: How do I compare strings in Java?

edited May 23 '17 at 10:26

Community

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answered Jun 14 '15 at 21:51

Arnaud Develay

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Android - If then doesn't work..?

1 Answers1