java - Android - If then doesn't work..? -


this question has answer here:

i hitting huge wall here. got code 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 started tapping 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 shows user parked, parkedrow parkeda, , slota slota. if not work.

but when start 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 code doing wronggg?? tell me if left required info untold..

update : seems need change code can compare string, , yes it's problem i'm facing.

you should use equals method compare string objects instead of the == operator.

see following question full explanation: how compare strings in java?


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