Kotlin One type argument expected for class for abstract generic view holder

Question

I\'m trying to create a RecyclerView.Adapter with the following:

---

View holders - Provided the abstract parent and one son

abstract class Base         


        

Answer 1

1- If you use always SettingTitleViewHolder;

RecyclerView.Adapter

2- If you want to use any class which extended BaseSettingViewHolder;

RecyclerView.Adapter>

3- Use Any Object Type

RecyclerView.Adapter>

4- Use extended type parameter for adapter class

class SettingsMenuAdapter:RecyclerView.Adapter where : BaseSettingViewHolder<*>

5- Define out for abstract class type parameter.

abstract class BaseSettingsViewHolder RecyclerView.Adapter>

7- Read that article => "Generics in Kotlin" ;)