Authentication with microsoft ADAL v2

CalendarClientHelper.java

getAuthenticationContext().acquireToken(
                mContextActivity,
                Constants.SCOPES.split(" "),
                null,
                Constants.CLIENT_ID,
                Constants.REDIRECT_URI,
                PromptBehavior.Auto,
                new AuthenticationCallback<AuthenticationResult>() {
                    @Override
                    public void onSuccess(final AuthenticationResult authenticationResult) {
                        if (authenticationResult != null &&
                                authenticationResult.getStatus() ==
                                        AuthenticationResult.AuthenticationStatus.Succeeded) {

                            dependencyResolver = new DefaultDependencyResolver(authenticationResult.getToken());

                            discoverServices();
                        }
                    }

                    @Override
                    public void onError(Exception t) {
                        Log.e("onError", "onError : " + t.getMessage());
                    }
                }
        );