public class NewsItem {
    private String title;
    private String content;

    public NewsItem(String title, String content) {
        this.title = title;
        this.content = content;
    }

    public String getTitle() {
        return title;
    }

    public String getContent() {
        return content;
    }
}

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import java.util.List;

public class NewsListAdapter extends ArrayAdapter<NewsItem> {

    public NewsListAdapter(@NonNull Context context, int resource, @NonNull List<NewsItem> newsList) {
        super(context, resource, newsList);
    }

    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.news_list_item, parent, false);
        }

        NewsItem newsItem = getItem(position);

        if (newsItem != null) {
            TextView titleTextView = convertView.findViewById(R.id.titleTextView);
            TextView contentTextView = convertView.findViewById(R.id.contentTextView);

            titleTextView.setText(newsItem.getTitle());
            contentTextView.setText(newsItem.getContent());
        }

        return convertView;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="16dp">

    <TextView
        android:id="@+id/titleTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textStyle="bold"/>

    <TextView
        android:id="@+id/contentTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"/>
</LinearLayout>

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import java.util.ArrayList;
import java.util.List;

public class NewsListFragment extends Fragment {

    private ListView listView;
    private List<NewsItem> newsItemList;
    private OnItemSelectedListener listener;

    public interface OnItemSelectedListener {
        void onItemSelected(NewsItem newsItem);
    }

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

        // 初始化新闻数据
        newsItemList = new ArrayList<>();
        newsItemList.add(new NewsItem("新闻标题1", "新闻内容1"));
        newsItemList.add(new NewsItem("新闻标题2", "新闻内容2"));
        newsItemList.add(new NewsItem("新闻标题3", "新闻内容3"));

        // 创建并设置适配器
        NewsListAdapter adapter = new NewsListAdapter(getActivity(), R.layout.news_list_item, newsItemList);
        listView.setAdapter(adapter);

        // 设置列表项点击事件
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (listener != null) {
                    listener.onItemSelected(newsItemList.get(position));
                }
            }
        });

        return view;
    }

    public void setOnItemSelectedListener(OnItemSelectedListener listener) {
        this.listener = listener;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

public class MainActivity extends AppCompatActivity implements NewsListFragment.OnItemSelectedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        NewsListFragment newsListFragment = new NewsListFragment();
        newsListFragment.setOnItemSelectedListener(this);

        getSupportFragmentManager().beginTransaction()
                .replace(R.id.fragment_container, newsListFragment)
                .commit();
    }

    @Override
    public void onItemSelected(NewsItem newsItem) {
        // 处理选定的新闻项，可以在这里启动新的 Fragment 或 Activity 来显示新闻详情
        // 例如：显示新闻详情的 NewsDetailFragment
    }
}