CardView | 小票形状的CardView，可以修改阴影颜色

I need to implement the below layout for my RecyclerView Items (The picture represents two rows):

This is my XML file:

I'm trying to show all user posts that the user who is using the app follows, and I'm using Firestore. I take all the ids and put them on an arraylist and build a query. I am using FirebaseRecyclerView but I have this error:

I am trying to figure out how I can determine which image a user has click on when the images are all in a FrameLayout and the view is inflated with an Adapter

The setItemClickListener for the Adapter is below: (The pos works in determining which element in the array was click, so first item in the list gets 0 and so on...):

I have been updating my apps forgot password functionality from Activity to simple custom Alert Dialog. How should I add rounded corners to Dialog window? I have already read multiple tutorials, but none seem to work in my case. I read from somewhere that I should use setBackgroundResources method somewhere, but I'm not sure where.

Kotlin code

Trying to figure out what is the issue with updating RecyclerView's Adapter.

I want to change the color of all the item from a recyclerview with a button.

When I chang the value of colorchange at the begining of the activity the recyclerview is set with the new color. But not when I change it clicking the button...

Here is my adapter :

Things were fine till yesterday. Today when I opened system I'm suddenly getting the error:

I am designing a shopping app via Kotlin & Firebase. I am using recycler view in an inbuilt fragment . There is one activity which is responsible for multiple fragments , for example one fragment is responsible for displaying orders , one fragment is responsible displaying all products etc. I get all my data from firebase & display it in fragments via a recycler view. The issue is that the recycler view scrolls but it does not scroll to the end of the page. Can someone guide me. I have attached two screenshots

(Recycler view does not scroll to the end of the last child i.e "TAP TO KNOW MORE" textview is not visible for the last element of recycler view, it just stops scrolling)

This is how my activity is designed ->

I have been trying to resolve an issue being thrown at runtime where the recyclerview I am using is null. From most examples of this error message I have seen online it is usually when using a RecyclerView is being used in a fragment. This RecyclerView is just being used in a normal Kotlin Activity.

Error When OrderActivity.kt is opened

I am trying to perform a shared element transition from a RecyclerView item in Fragment A to Fragment B. The transition-names are set on the outermost CardViews in both layouts. My implementation is basically the same as the one in this sample.

Everything worked fine until I added a ViewPager2 in Fragment B.

I tried to follow the steps in this answer, but to no luck.

Stack trace: