使用Bundle将textview从一个片段更新到另一个不起作用的片段

Question

我按照代码示例使用bundle将数据从一个片段发送到另一个片段，但是我想要显示包含字符串的bundle值的textview没有显示存储的值。

字符串值是获取用户从列表视图中单击的电话名称联系人，下面的Toast行显示已成功获取该名称。

我已经重写了代码，在示例后多次将字符串值发送到片段，但我没有运气。

SelectModemFragment

 // Set the ListViews OnItemClick Listener
            display_contacts1.setOnItemClickListener(new AdapterView.OnItemClickListener()
            {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id)
                {
                    String namedisplay = arrayAdapter.getItem(position); //<<<<<<<<<< this gets the phone name

                    Toast.makeText(view.getContext(), namedisplay + " Selected for Communication", Toast.LENGTH_SHORT).show();
                    Toast.makeText(view.getContext(), phoneNo, Toast.LENGTH_SHORT).show();

                    // Using bundle to send data
                    Bundle bundle = new Bundle();
                    bundle.putString(namedisplay, "namevalue");

                    // Begin transaction to command window
                    FragmentTransaction transaction = getFragmentManager().beginTransaction();
                    CommandsFragment modemFragment = new CommandsFragment();
                    modemFragment.setArguments(bundle); // Data to be send to commands fragment
                    transaction.replace(R.id.frame_layout, modemFragment);
                    transaction.commit();

                    //modemView.setText(namedisplay);
                }
            });

CommandsFragment

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        View view = inflater.inflate(R.layout.fragment_commands_view, container, false);

        modemView = (TextView) view.findViewById(R.id.modem_view);

        if (display_contacts.isEmpty())
        {
            number = null;

            // No contacts selected from the Add Modem listview
            modemView.setText("No contact selected");
        }
        else
        {
            Bundle bundle = getArguments();
            modemView.setText(String.valueOf(bundle.getString("namevalue")));
        }

        return view;
}

Answer 1

这一行是你的问题：

bundle.putString(namedisplay, "namevalue");

它应该是

bundle.putString("namevalue", namedisplay);

先把钥匙，然后价值。