Android RecyclerView实现子控件弹出PopupMenu菜单

// 为 TextView 注册上下文菜单
                                LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
                                View view = layoutManager.findViewByPosition(i);//View view = layoutManager.findViewByPosition(2);
                                TextView tx=   view.findViewById(R.id.T_xmfx);
                                tx.setText("99999");
                               // RelativeLayout layout = (RelativeLayout)recyclerView.getChildAt(i);

                                //实现弹出菜单

                                PopupMenu popupMenu = new PopupMenu(XqinglistActivity.this,tx);//view
                                popupMenu.getMenuInflater().inflate(R.menu.option_menu,popupMenu.getMenu());

                                //弹出式菜单的菜单项点击事件
                                popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                                    @Override
                                    public boolean onMenuItemClick(MenuItem item) {

                                        if (item.getItemId() == R.id.delete) {
                                            Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
                                        } else if (item.getItemId() == R.id.exit) {
                                            Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
                                            finish();
                                        }


                                        return false;
                                    }
                                });
                                popupMenu.show();






                            }
                        });