There is actually a better way to achieve this. You can use some of the RecyclerView
‘s “companion” classes:
ItemTouchHelper
, which is
a utility class to add swipe to dismiss and drag & drop support to RecyclerView.
and its ItemTouchHelper.Callback
, which is
the contract between ItemTouchHelper and your application
// Create an `ItemTouchHelper` and attach it to the `RecyclerView`
ItemTouchHelper ith = new ItemTouchHelper(_ithCallback);
ith.attachToRecyclerView(rv);
// Extend the Callback class
ItemTouchHelper.Callback _ithCallback = new ItemTouchHelper.Callback() {
//and in your imlpementaion of
public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
// get the viewHolder's and target's positions in your adapter data, swap them
Collections.swap(/*RecyclerView.Adapter's data collection*/, viewHolder.getAdapterPosition(), target.getAdapterPosition());
// and notify the adapter that its dataset has changed
_adapter.notifyItemMoved(viewHolder.getAdapterPosition(), target.getAdapterPosition());
return true;
}
@Override
public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
//TODO
}
//defines the enabled move directions in each state (idle, swiping, dragging).
@Override
public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
return makeFlag(ItemTouchHelper.ACTION_STATE_DRAG,
ItemTouchHelper.DOWN | ItemTouchHelper.UP | ItemTouchHelper.START | ItemTouchHelper.END);
}
};
For more details check their documentation.