How to make an abstract class with a constructor that needs a List of custom objects?

Questions & Answers
1

I’m trying to create an abstract class that needs a List of objects. When I implement it, I get an error saying

There is no argument given that corresponds to the required formal parameter 'items' of 'SomeClass.SomeClass(List<MonoBehaviour>)'

I can’t find the same use case as mine so I asked here.

Here’s my abstract class:

public abstract class SomeClass: MonoBehaviour {
    List<MonoBehaviour> mItems;
    
    protected SomeClass(List<MonoBehaviour> items){
        mItems = items;
    }

    public List<MonoBehaviour> GetItems(){
        return mItems;
    }

    public abstract GameObject GetView();
}

And this how I implemented it:

public class SomeClassHandler : Adapter{
    List<Item> mItems;

    public SomeClassHandler(List<Item> items){
        mItems = items;
    }

    public override GameObject GetView(){
        return new GameObject();//ignore this, I'm gonna fix this later
    }
}
2
  • C# requires you to call base constructor to maintain consistency.
public abstract class AbstractClass <T>
{
	List<T> m_items;
	public List<T> Items () => m_items;
	protected AbstractClass ( List<T> items )
	{
		m_items = items;
	}
}

public class MyClass : AbstractClass<Item>
{
	public MyClass ( List<Item> items )
		: base( items )
	{
		
	}
}

public struct Item {}
  • MonoBehaviour constructors are reserved by engine itself. Use Start(), Awake() or OnEnable() for initialization instead.