I want to use lambda expression instead of addOnCompleteListener(new OnCompleteListener() { {

manpreet Best Answer 2 years ago

i am getting error while using OnCompleteListerner in Java 8 SE Anonymous new OnCompleteListener() can be replaced with lambda less... (Ctrl+F1) Inspection info: This inspection reports all anonymous classes which can be replaced with lambda expressions Lambda syntax is not supported under Java 1.7 or earlier JVMs.

            mAuth.createUserWithEmailAndPassword(email1, pass ).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful())
                    {
                        currentuser=FirebaseAuth.getInstance().getCurrentUser();
                        String uid= currentuser.getUid();
                        secondaryDB=firebaseDatabase.getInstance().getReference().child("android_demo").child("users").child(uid);
                        HashMap<String, String> userMap= new HashMap<>();
                        userMap.put("name",name);
                        userMap.put("fcm",fcm);
                        userMap.put("email",email);
                        userMap.put("mobile",mobile);
                        userMap.put("userid",userid+"");
                        userMap.put("image_url", profileimageUrl);

                        Log.e("DB Called","DatabaseCalled");
                        secondaryDB.setValue(userMap).addOnCompleteListener(new OnCompleteListener<Void>() {
                            @Override
                            public void onComplete(@NonNull Task<Void> task) {

                                if (task.isSuccessful())
                                {
                                    Log.v("success","**************************");
                                }
                            }
                        });
                    }




                }
            });

manpreet 2 years ago

As Lambda is introduce in Java 8. Make sure you have installed Java 8 and above JDK Version. Lambda expression for "createUserWithEmailAndPassword" :

mAuth.createUserWithEmailAndPassword(emailId, password)
                    .addOnCompleteListener(OnCompleteListener { task ->
                        if (task.isSuccessful) {

                        }}