有人能给我指一下列表视图中的上下文菜单吗

您只需单击适配器内的3dots图像即可显示弹出菜单

代码:

//Creating the instance of PopupMenu
            final PopupMenu popup = new PopupMenu(activity, level);
            //Inflating the Popup using xml file
            popup.getMenuInflater().inflate(R.menu.popup_level, popup.getMenu());

            //registering popup with OnMenuItemClickListener
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                public boolean onMenuItemClick(MenuItem item) {
                    level.setText(item.getTitle());
                    return true;
                }
            });

menuImage.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {          

            popup.show();//showing popup menu
        }
    });

tutorial here