Rotate image left/right by an angle on button click

Question

Using picasso-transformations library for Image editing.There are two separate buttons for left rotation and right rotation.On button click, the Image rotates only once. I want to rotate Image on every button click to its respective direction.

 recyclerView.addOnItemTouchListener(new RecyclerClick(act, recyclerView, new RecyclerClickListener() {
            @Override
            public void onClick(View view, final int position) {
                switch (position) {
                    case 0:
                        Picasso.with(act)
                                .load(selectedPhotoUri)
                                .rotate(90f)
                                .into(photo);
                        break;
                    case 1:
                        Picasso.with(act)
                                .load(selectedPhotoUri)
                                .rotate(90f)
                                .into(photo);
                        break;
                }
            }

Answer 1

Maybe instance variables helps.

like this:

recyclerView.addOnItemTouchListener(new RecyclerClick(act, recyclerView, new RecyclerClickListener() {

    int rotate = 0;

    @Override
    public void onClick(View view, final int position) {
        switch (position) {
            case 0:
                rotate += 90f
                break;
            case 1:
                rotate -= 90f;
                break;
        }
        Picasso.with(act)
                .load(selectedPhotoUri)
                .rotate(rotate)
                .into(photo);
    }
}));