Trying to get Value from Firebase database and creating if else statement to set value in firebase but app executes the fourth line only

Asked Feb 28 '20 at 16:28

Active Feb 28 '20 at 16:51

Viewed 18 times

This is my code.When user clicks button i execute this code

finalteamcount.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                    String one = "one";
                    String two = "two";
                    String three = "three";
                    String four = "four";
                    String qwq = dataSnapshot.getValue(String.class);
                    if (qwq == null){finalteamcount.setValue(one);}
                    if (qwq == one){finalteamcount.setValue(two);}
                    if (qwq == two){finalteamcount.setValue(three);}
                    if (qwq == three){finalteamcount.setValue(four);}

                }

It Directely set four, the value i am retriving is null

edited Feb 28 '20 at 16:51

Doug Stevenson

297,357
32
422
441

asked Feb 28 '20 at 16:28

ICEBlizzard

Where do you get `null`? It's often easiest if you add a `Log.i()` in the code that prints the variable, and then show us the updated code and its output. – Frank van Puffelen Feb 28 '20 at 16:36
there is no data to that location so it will be null? – ICEBlizzard Feb 28 '20 at 16:37
1

You shouldn't use `==` to compare strings in Java. Use `equals()` instead as described in the duplicate. – Doug Stevenson Feb 28 '20 at 16:51

Trying to get Value from Firebase database and creating if else statement to set value in firebase but app executes the fourth line only

0 Answers0