Drop event, without swapItems on move

[volser]

How to implement drop event without swapItems on drag?
I want to drag item into another item, not swap

[volser]

I have folders and files.

I need:

• Drag and drop files onto each other to create a folder
• Drag and drop files into an already created folder to add to that folder

But:

1. When Folder collapsed onMove don't work over folder
   I guess, because

    @Override
    public boolean canDropOver(RecyclerView recyclerView, RecyclerView.ViewHolder current, RecyclerView.ViewHolder target) {
        return current.getItemViewType() == target.getItemViewType();
    }

1. I don't want swap items on drag, but

/**
 * Called when an item has been dragged far enough to trigger a move. This is
 * called every time an item is shifted, and NOT at the end of a "drop" event!!!
 */
    @Override
    @CallSuper
    public boolean onItemMove(int fromPosition, int toPosition) {
        swapItems(mItems, fromPosition, toPosition);
        //After the swap, delegate further actions to the user
        if (mItemMoveListener != null) {
            mItemMoveListener.onItemMove(fromPosition, toPosition);
        }
        return true;
    }

How to implement what I need? Thanks

[davideas]

@volser, You can override the methods and write your own, so instead of move you delete the item you are dragging. But this library is not designed for tree views, you will have troubles.

[volser]

@davideas Thanks for feedback
I don't need treeview only 1 level of folders (without nested folders)

1. I can't override method in ItemTouchHelperCallback
2. I can override, but I should call super
   @callsuper

[volser]

. 3. And how catch Drop event?

[davideas]

@volser, I need to give the possibility to set a custom ItemTouchHelperCallback, where you can override everything, for moment you can't intercept everything but something.
It will take sometime to rewrite that part.

[volser]

Ok, thanks

[davideas]

@volser, with next SNAPSHOT, you can now set the ItemTouchHelperCallback and override swipeItems() with empty method.
onItemMove() is with @CallSuper because there's the call to the listener.