How to check if values are equal

Question

I want to check if the value matches too another value. I tried this code but it doesnt work it always gives me doesnt match. Someone got an idea how i can check for it oder a method? Thank you guys!

DatabaseReference CheckULobby = FirebaseDatabase.getInstance().getReference().child("Users").child(userID).child("Lobby");
CheckULobby.addValueEventListener(new ValueEventListener() {

    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        final String getULobby = dataSnapshot.getValue(String.class);
        DatabaseReference CheckFLobby = FirebaseDatabase.getInstance().getReference().child("Users").child(post_UserID).child("Lobby");

        CheckFLobby.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                String getFLobby = dataSnapshot.getValue(String.class);

                if(getFLobby == getULobby){
                    Toast.makeText(CreateLobby.this, "matches", Toast.LENGTH_SHORT).show();
                }
                else{
                     Toast.makeText(CreateLobby.this, "doesnt match", Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }
});

You should try outputting your results. You can do that by writing to the log: Log.i("Val A", getFlobby); Log.i("Val B", getULobby. — Felix, Oct 18 '16 at 09:32
Im sry im new here at stackoverflow and i searched the wrong way — Markus Biermeier, Oct 18 '16 at 09:41

score 0 · Answer 1 · edited Oct 18 '16 at 09:58

0

Use String method equals or equalsIgnoreCase:

if(getFLobby.equals(getULobby)){
  Toast.makeText(CreateLobby.this, "matches", Toast.LENGTH_SHORT).show();
}else{
  Toast.makeText(CreateLobby.this, "doesnt match", Toast.LENGTH_SHORT).show();
}

OR

if(getFLobby.equalsIgnoreCase(getULobby)){
  Toast.makeText(CreateLobby.this, "matches", Toast.LENGTH_SHORT).show();
}else{
  Toast.makeText(CreateLobby.this, "doesnt match", Toast.LENGTH_SHORT).show();
}

edited Oct 18 '16 at 09:58

R. Zagórski

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answered Oct 18 '16 at 09:30

Digvesh Patel

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I tried it already doesnt work but i will try it again – Markus Biermeier Oct 18 '16 at 09:32
Ouh nice it works :3 But if Lobby doesnt exist in the friend database it crashes hm... – Markus Biermeier Oct 18 '16 at 09:40

score 0 · Answer 2 · answered Oct 18 '16 at 09:32

0

try this:

getFLobby.equals(getULobby)

answered Oct 18 '16 at 09:32

Y. Shao

1

How to check if values are equal

2 Answers2