片段里面的片段不工作

Question

我在另一个片段中创建了一个片段，当我点击列表中的列表项时，它起作用，因为toast方法显示了消息，但新片段没有添加...它显示保持不变....

   @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            TextView T_profile_name = (TextView) view.findViewById(R.id.profile_name);
             TextView T_profile_hometown = (TextView) view.findViewById(R.id.profile_hometown);

             String user_name = T_profile_name.getText().toString();
             String  user_hometown = T_profile_hometown.getText().toString();
             String getID = user_id[position];

            SharedPreferences sharedPreferences = getActivity().getSharedPreferences("comm_data", getContext().MODE_PRIVATE);
            String getid = sharedPreferences.getString("user_id", "");
             Toast.makeText(getContext(), user_name+" "+user_hometown+" "+getID+""+getid, Toast.LENGTH_SHORT).show();


             //mSocket.emit("message", "getuser");
            FragmentManager fragmentManager = getChildFragmentManager();
            FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
            fragmentTransaction.add(new Chat_box(),"chat_box");
            fragmentTransaction.addToBackStack("chat");
            fragmentTransaction.commit();

Answer 1

您应该告诉片段管理器在某处添加片段。正如@Mike所说，使用FragmentTransaction#add(int,Fragment, String)。您的代码应为fragmentTransaction.add(R.id.the_container,new Chat_box(),"chat_box");