swipe to delete from recyclerview video player part 17

In this VideoPlayer app series I am going to show you how yo can perform swipe to delete item from recyclerview and you can delete or share with multiple item 

so let's start.

1.add a global varaibles in your VideoFolder.java

private Paint mClearPaint;
LinearLayout parentLayout; //assaign this in onCreate Method

2.add this code to your VideoFolder.java

ItemTouchHelper.SimpleCallback simpleCallback =
        new ItemTouchHelper.SimpleCallback(0 , ItemTouchHelper.LEFT) {
    @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();
        selectionArrayList.add(videoModelArrayList.get(position));
        videosAdapter.removeItem(position);
        Snackbar snackbar = Snackbar.make(parentLayout, "are you sure..", Snackbar.LENGTH_INDEFINITE);
        snackbar.setAction("Yes", new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Thread thread = new Thread(new Runnable() {
                    @Override
                    public void run() {
                        boolean isDeleted = selectedFile(selectionArrayList, true);
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                snackbar.dismiss();
                                if (isDeleted){
                                    selectionArrayList.clear();
                                }else {
                                    Toast.makeText(VideoFolder.this, "Delete Fail",
                                            Toast.LENGTH_SHORT).show();
                                }
                            }
                        });
                    }
                });
                thread.start();
            }
        });
        snackbar.show();
        snackbar.setActionTextColor(Color.RED);
    }

    @Override
    public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView,
                            @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY,
                            int actionState, boolean isCurrentlyActive) {
        super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
        ColorDrawable mBackground;
        int backgroundColor;
        Drawable deleteDrawable;
        int intrinsicWidth;
        int intrinsicHeight;
        mBackground = new ColorDrawable();
        backgroundColor = Color.parseColor("#b80f0a");
        mClearPaint = new Paint();
        mClearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
        deleteDrawable = ContextCompat.getDrawable(VideoFolder.this, R.drawable.delete);
        intrinsicWidth = deleteDrawable.getIntrinsicWidth();
        intrinsicHeight = deleteDrawable.getIntrinsicHeight();


        View itemView = viewHolder.itemView;
        int itemHeight = itemView.getHeight();
        boolean isCancelled = dX == 0 && !isCurrentlyActive;
        if (isCancelled) {
            clearCanvas(c, itemView.getRight() + dX, (float) itemView.getTop(),
                    (float) itemView.getRight(), (float) itemView.getBottom());
            super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
            return;
        }

        mBackground.setColor(backgroundColor);
        mBackground.setBounds(itemView.getRight() + (int) dX, itemView.getTop(),
                itemView.getRight(), itemView.getBottom());
        mBackground.draw(c);

        int deleteIconTop = itemView.getTop() + (itemHeight - intrinsicHeight) / 2;
        int deleteIconMargin = (itemHeight - intrinsicHeight) / 2;
        int deleteIconLeft = itemView.getRight() - deleteIconMargin - intrinsicWidth;
        int deleteIconRight = itemView.getRight() - deleteIconMargin;
        int deleteIconBottom = deleteIconTop + intrinsicHeight;

        deleteDrawable.setBounds(deleteIconLeft, deleteIconTop, deleteIconRight, deleteIconBottom);
        deleteDrawable.draw(c);

        super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
    }
};

private void clearCanvas(Canvas c, Float left, Float top, 
                         Float right, Float bottom) {
    c.drawRect(left,top,right,bottom, mClearPaint);
}

3.attach ItemTouchHelper to you recylerview like this 

new ItemTouchHelper(simpleCallback).attachToRecyclerView(recyclerView);

4.add this method in your videoFolderAdapter.java to remove item

public void removeItem(int position){
    videoFolder.remove(position);
    notifyItemRemoved(position);
}

Watch video Tutorial