android-custom-view | android custom view collections | Android library

I am creating a custom view in Kotlin.

For the constructors, I have followed the suggestions listed here: https://blog.q42.nl/the-danger-of-assumptions-kotlin-with-android-custom-views-adb79bf2da45

My problem is that now the init block doesn't recognise the attrs parameter since they are not in the primary constructor.

Am I missing something?

I'm new to the Xamarin. I'm trying to create my own view in an Android aplication, but it's throwing an ClassNotFoundException on constructor. I was searching for similar issues but I haven't found similar one (only here is something that I think may be quite similar, but it isn't solved in fact — answers tell to edit java file, but it's not possible when working in Xamarin). Here's my code of MainActivity.cs:

I currently have a custom view with a Drawable resource that I want to animate moving it from one position to another. I know there are two ways to implement PropertyAnimation, you can do it by using ValueAnimation or ObjectAnimation. But with both I didn't find any information on Google docs about how to use them with a Drawable instead of a View. This is the only example I found that is similar to my problem, and so I've tryed to implement it in my code:

MainActivity