java - 如何将 bundle 数据从一个 fragment 获取到另一个 fragment ？

Question

我有两个 fragments.addfragment 和控制 fragment 。从 addfragment 我使用带有 fragment 事务的 bundle 发送数据，然后在控制 fragment 中，我想使用 bundle 获取该数据但我无法获取数据。所以请帮助我

这是我的带有 fragment 事务的 addfragment-

     relaylist.setAdapter(adapter);
relaylist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {


        HashMap<String, String> o = (HashMap<String, String>) relaylist.getItemAtPosition(position);



        Log.e("ip: ", "> " +  o.get("ip"));
        Log.e("port: ", "> " +  o.get("port"));
        Log.e("uname: ", "> " +  o.get("uname"));
        Log.e("password: ", "> " +  o.get("password"));


        ControlFragment fragment = new ControlFragment();
        FragmentTransaction transaction = getFragmentManager().beginTransaction();
        Bundle bundle = new Bundle();
        bundle.putString("ip", o.get("ip"));
        bundle.putString("port", o.get("port"));
        bundle.putString("uname", o.get("uname"));
        bundle.putString("password", o.get("password"));
        Log.e("ip: ", "> " +  o.get("ip"));
        Log.e("port: ", "> " +  o.get("port"));
        Log.e("uname: ", "> " +  o.get("uname"));
        Log.e("password: ", "> " +  o.get("password"));
        fragment.setArguments(bundle);
        transaction.replace(R.id.mainFrame, new ControlFragment() );

        transaction.commit();
    }
});

在控制 fragment 中，我以这种方式获取数据......但我无法获取数据

public class ControlFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View rootView= inflater.inflate(R.layout.fragment_control, container, false);
        Bundle bundle = getArguments();

             String ip=bundle.getString("ip");
            Stirng port = bundle.getString("port");
            Stirng uname = bundle.getString("uname");
            Stirng password = bundle.getString("password");

Answer 1

您正在设置构造函数而不是对象。使用下面的代码

ControlFragment fragment = new ControlFragment();
        FragmentTransaction transaction = getFragmentManager().beginTransaction();
        Bundle bundle = new Bundle();
        bundle.putString("ip", o.get("ip"));
        bundle.putString("port", o.get("port"));
        bundle.putString("uname", o.get("uname"));
        bundle.putString("password", o.get("password"));
        Log.e("ip: ", "> " +  o.get("ip"));
        Log.e("port: ", "> " +  o.get("port"));
        Log.e("uname: ", "> " +  o.get("uname"));
        Log.e("password: ", "> " +  o.get("password"));
        fragment.setArguments(bundle);
        transaction.replace(R.id.mainFrame, fragment  );

transaction.replace(R.id.mainFrame, fragment );

这就是改变。