如何从RecyclerView ListAdapter按位置获取项目？

Question

I have a RecyclerView of custom objects which uses custom ListAdapter. Is there a way to get the position of Item in Adapter from Activity or how can I access the containing list?

Answer 1

Is there a way to get the position of Item in Adapter from Activity or how can I access the containing list?

You need to declare a method inside your custom list adapter that exposes the underlying list you provide on the constructor.

Something like this:

List<MyItem> myList = new List<MyItem>()
MyCustomListAdapter mAdapter = new MyCustomListAdapter(myList);

In MyCustomListAdapter constructor assign your list to a field mInternalList and declare a method:

public List<MyItem> getInternalList(){
    return mInternalList;
}

After this you can use all list utility methods to retrieve the index of an element.