Recyclerview swipe example

MainActivity.java

...

  private void initSwipe() {

        ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0,  ItemTouchHelper.RIGHT) {

            @Override
            public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
                return false;
            }

            @Override
            public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {

                int position = viewHolder.getAdapterPosition();

                if (direction == ItemTouchHelper.RIGHT) {
                    mRcyclrAdapter.removeItem(position);
                }
            }

            @Override
            public void onChildDraw(@NonNull Canvas canvas, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
                super.onChildDraw(canvas, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
                View itemView = viewHolder.itemView;

                Paint paint = new Paint();
                Bitmap iconBitmap;

                if (dX > 0) {

                    iconBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_delete);
                    paint.setColor(ContextCompat.getColor(getContext(), R.color.red));

                    canvas.drawRect(itemView.getLeft(), itemView.getTop(),
                            itemView.getLeft() + dX, itemView.getBottom(), paint);

                    // Set the image icon for Right side swipe
                    canvas.drawBitmap(iconBitmap,
                            itemView.getLeft() + convertDpToPx(16),
                            itemView.getTop() + (itemView.getBottom() - itemView.getTop() - iconBitmap.getHeight()) / 2,
                            paint);
                }
                float ALPHA_FULL = 1.0f;

                // Fade out the view as it is swiped out of the parent's bounds
                float alpha = ALPHA_FULL - Math.abs(dX) / viewHolder.itemView.getWidth();
                viewHolder.itemView.setAlpha(alpha);
                viewHolder.itemView.setTranslationX(dX);

                super.onChildDraw(canvas, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
            }
        };
        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleItemTouchCallback);
        itemTouchHelper.attachToRecyclerView(recyclrvw);
    }

    private int convertDpToPx(int dp) {
        return Math.round(dp * (getResources().getDisplayMetrics().xdpi / DisplayMetrics.DENSITY_DEFAULT));
    }
  
...