Android-ViewPager | Android View Pager Example | Android library

I just wanna know if I'm doing something wrong since I'm kinda new to all this.
If there is anything else that you'll like me to add just let me know.
This is the repo branch where I'm trying to implement the ViewPager if you wanna see all the code.

So I have 4 Categories represented with Fragments, each of this categories holds an ArrayList of items that each has a onItemClickListener that should reproduce some audio.
I'm trying to display the Fragments with a ViewPager but the problem is that when I scroll from a Fragment to another, then come back to the already created Fragment, it doesnt register the touch event, nothing happens, not even an error nor exception.
If I go to a newly created Fragment the touch works just fine.
Also, after switching back to an already created Fragment if I scroll even just a little bit to another Fragment and comeback or through the ArrayList of that Fragment for some reason it starts to recognize the touch in the ArrayList items again.

• Fragments in ViewPager2 does not respond to clicks if scroll position is 0
  
• ViewPager2 conflicting with SwipeRefreshLayout
• Android ViewPager2 with fragment containing a recyclerview not scrolling

• I tried to use a coordinatorlayout wrapping the ViewPager2 but there is no difference
  
• I've been reading some of the official viewPager2 examples that are written in Kotlin but none of them seem to have a similar situation (also it's hard for me to read Kotlin code)

word_list.xml:

what I am trying to do is close the image adapter at the click of a button placed in the third view.

I am setting the views following this tutorial and it works fine: https://www.journaldev.com/10096/android-viewpager-example-tutorial

Now what I am trying to do is close the adapter with a botton in the last view. I get an error that says that points the button: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

I think this is because the button is not on the main layout but on the view layout. so how can I acces it correctly to hide/close the adapter

this is the main

Applying the solution of this link Android ViewPager with bottom dots I found that in androidx, with implementation "com.google.android.material:material:1.0.0" I cannot adjust the width of the dots and I cannot adjust the margin between the dots.

Hi i want to create a viewpager so i follow this tutorial : https://blog.mindorks.com/android-viewpager-in-kotlin. But when i try to set up the array of color in res.colors :