ItemDetailsLookup

abstract class ItemDetailsLookup<K : Any!>

The Selection library calls getItemDetails(MotionEvent) when it needs access to information about the area and/or ItemDetails under a MotionEvent. Your implementation must negotiate ViewHolder lookup with the corresponding RecyclerView instance, and the subsequent conversion of the ViewHolder instance to an ItemDetails instance.

Example

 final class MyDetailsLookup extends ItemDetailsLookup { private final RecyclerView mRecyclerView; MyDetailsLookup(RecyclerView recyclerView) { mRecyclerView = recyclerView; } public ItemDetails getItemDetails(MotionEvent e) { View view = mRecView.findChildViewUnder(e.getX(), e.getY()); if (view != null) { ViewHolder holder = mRecView.getChildViewHolder(view); if (holder instanceof MyHolder) { return ((MyHolder) holder).getItemDetails(); } } return null; } } 

Summary

Public constructors

ItemDetailsLookup()

 final class MyDetailsLookup extends ItemDetailsLookup { private final RecyclerView mRecyclerView; MyDetailsLookup(RecyclerView recyclerView) { mRecyclerView = recyclerView; } public ItemDetails getItemDetails(MotionEvent e) { View view = mRecView.findChildViewUnder(e.getX(), e.getY()); if (view != null) { ViewHolder holder = mRecView.getChildViewHolder(view); if (holder instanceof MyHolder) { return ((MyHolder) holder).getItemDetails(); } } return null; } } 

Public methods

@Nullable abstract fun getItemDetails(@NonNull e: MotionEvent): ItemDetailsLookup.ItemDetails<K>?