How to compare the Firebase retrieved value with a string?

Question

Is there a way I can store the value retrieved from the Firebase to be stored in a String Variable? Here is my code retrieving the Value of "rface":

ref.addListenerForSingleValueEvent(new com.google.firebase.database.ValueEventListener() {
                @Override
                public void onDataChange(com.google.firebase.database.DataSnapshot dataSnapshot) {
                    rface = dataSnapshot.child("face").getValue(String.class);
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {
                }
            });

And I want to implement and if condition:

if (rface=="0") {
    do this
}

The rface contains a string value in my Firebase Database.
When I try to use this If condition Android Studio says:

Operator "==" can not be applied to 'java.util.Objects','java.lang.String'

Use `if (rface.equals("0")) ...` http://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java — Andrew Brooke, Feb 28 '17 at 21:01
It shows 'equals()' between objects of inconvertible types 'String' and 'Object'. — Sagar Duhan, Feb 28 '17 at 21:10

score 1 · Accepted Answer · answered Feb 28 '17 at 21:50

1

You should cast your object to a String like this:

rface = (String)dataSnapshot.child("face").getValue();

and then compare with equals();

answered Feb 28 '17 at 21:50

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How to compare the Firebase retrieved value with a string?

1 Answers1