RxMapExample.java

RxAndroidNetworking.get("https://fierce-cove-29863.herokuapp.com/getAnUser/{userId}")
                .addPathParameter("userId", "1")
                .build()
                .getObjectObservable(ApiUser.class) // This returns you an Observable
                .subscribeOn(Schedulers.io()) // do the network call on another thread
                .observeOn(AndroidSchedulers.mainThread()) // return the result in mainThread
                .map(new Func1<ApiUser, User>() {
                    @Override
                    public User call(ApiUser apiUser) {
                        // here we get ApiUser from server
                        User user = convertApiUserToUser(apiUser);
                        // then by converting, we are returing user
                        return user;
                    }
                })
                .subscribe(new Observer<User>() {
                    @Override
                    public void onCompleted() {
                    // do anything onComplete    
                    }
                    @Override
                    public void onError(Throwable e) {
                    // handle error
                    }
                    @Override
                    public void onNext(User user) {
                    // do anything with user     
                    }
                });