Android – how do I swap items from one part to another and vice versa in the recycler view?

I have a recyclerview. I want to show that the recyclerview has two parts. The first part of the first part is empty. I want to drag the items of the second part to the first part. When adding items to the first part, they should be deleted from the second part, and vice versa

Please help my friend

resolvent:

Try this. It works with me in my application,

In your adapter class, put this code below,

public void swap(int firstPosition, int secondPosition)
{
    Collections.swap(MessageList, firstPosition, secondPosition);
    notifyItemMoved(firstPosition, secondPosition);
}  

public class MovieTouchHelper extends itemtouchhelper.SimpleCallback {
    Aadapter recycleAdapter;

    public MovieTouchHelper(Aadapter recycleAdapter) {
        super(itemtouchhelper.UP | itemtouchhelper.DOWN, itemtouchhelper.LEFT | itemtouchhelper.RIGHT);
        this.recycleAdapter = recycleAdapter;
    }

    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        recycleAdapter.swap(viewHolder.getAdapterPosition(), target.getAdapterPosition());
        return true;
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        recycleAdapter.remove(viewHolder.getAdapterPosition());
    }
}

Then, in the mainactivity where you defined recycleview,

itemtouchhelper.Callback callback = new MovieTouchHelper(adapter);
itemtouchhelper helper = new itemtouchhelper(callback);
helper.attachToRecyclerView(rv_list);

Follow the steps below. If you find any problems or can't flip the project, please tell me directly

See this gif