# Question about MVI pattern, chapter 18

**URL:** <https://forums.kodeco.com/t/question-about-mvi-pattern-chapter-18/104916>\
**Category:** Advanced Android App Architecture\
**Created:** [April 11, 2020, 11:21am UTC](https://forums.kodeco.com/t/question-about-mvi-pattern-chapter-18/104916 "2020-04-11T11:21:09Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![ahnset](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/ahnset/32/105896_2.png) [@ahnset](https://forums.kodeco.com/u/ahnset)\
**Post date:** [April 11, 2020, 11:21am UTC](https://forums.kodeco.com/t/question-about-mvi-pattern-chapter-18/104916/1 "2020-04-11T11:21:09Z")

</div>

Hello everyone,

I would like to understand how **observeMovieDisplay()** and **observeMovieDeleteIntent()** methods from **MainPresenter** work as “observable methods” ?

- I can see that **observeMovieDisplay()** method behaves like LiveData observer pattern, but I don’t get how it works.

- I can also see that **observeMovieDeleteIntent()** method behaves like PublishSubject where it is declared as **Observable** instead of **PublishSubject**

Is it due to the fact that we are using RxBinding ?  
I am really confused now, so please, can anyone help me ?

---

<div class="post-metadata">

**Author:** ![ahnset](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/ahnset/32/105896_2.png) [@ahnset](https://forums.kodeco.com/u/ahnset)\
**Post date:** [April 11, 2020, 12:22pm UTC](https://forums.kodeco.com/t/question-about-mvi-pattern-chapter-18/104916/2 "2020-04-11T12:22:05Z")

</div>

@shogunkaramazov can you help me ?

---

<div class="post-metadata">

**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [July 4, 2020, 2:47am UTC](https://forums.kodeco.com/t/question-about-mvi-pattern-chapter-18/104916/3 "2020-07-04T02:47:01Z")

</div>

@aldominium Can you please help with this when you get a chance? Thank you - much appreciated! :]