private void showPopupMenu(View v){
        final PopupMenu popupMenu = new PopupMenu(this,v);
        popupMenu.getMenuInflater().inflate(R.menu.main_menu,popupMenu.getMenu());
        popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()){
                    case 0:

                        break;
                    default:
                }
                return true;
            }
        });
        popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() {
            @Override
            public void onDismiss(PopupMenu menu) {
                popupMenu.dismiss();
            }
        });
        popupMenu.show();
    }