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<uri>
  {
 
    private final RecyclerView mRecyclerView;
 
    MyDetailsLookup(RecyclerView recyclerView) {
        mRecyclerView = recyclerView;
    }
 
    public @Nullable ItemDetails
 <uri>
   getItemDetails(@NonNull MotionEvent e) { View view = mRecyclerView.findChildViewUnder(e.getX(), e.getY()); if (view != null) { ViewHolder holder = mRecyclerView.getChildViewHolder(view); if (holder instanceof MyHolder) { return ((MyHolder) holder).getItemDetails(); } } return null; } } 
 </uri>
</uri>

Summary

Public constructors

ItemDetailsLookup()

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

Public methods

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