androidstudio新闻页面代码

以下是一个简单的Android Studio新闻页面代码示例，包含了上述步骤中提到的一些关键代码：

1. 布局文件 "activity_main.xml"：

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/news_list"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

2. RecyclerView Adapter "NewsAdapter.java"：

public class NewsAdapter extends RecyclerView.Adapter<NewsAdapter.ViewHolder> {
    private List<News> mNewsList;

    static class ViewHolder extends RecyclerView.ViewHolder {
        TextView newsTitle;

        public ViewHolder(View view) {
            super(view);
            newsTitle = (TextView) view.findViewById(R.id.news_title);
        }
    }

    public NewsAdapter(List<News> newsList) {
        mNewsList = newsList;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.news_item, parent, false);
        ViewHolder holder = new ViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        News news = mNewsList.get(position);
        holder.newsTitle.setText(news.getTitle());
    }

    @Override
    public int getItemCount() {
        return mNewsList.size();
    }
}

3. RecyclerView Item 布局文件 "news_item.xml"：

<TextView
    android:id="@+id/news_title"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textSize="18sp"
    android:padding="10dp" />

4. MainActivity.java：

public class MainActivity extends AppCompatActivity {
    private List<News> mNewsList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initNews();
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.news_list);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);
        NewsAdapter adapter = new NewsAdapter(mNewsList);
        recyclerView.setAdapter(adapter);
        adapter.setOnItemClickListener(new NewsAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(View view, int position) {
                News news = mNewsList.get(position);
                Intent intent = new Intent(MainActivity.this, NewsDetailActivity.class);
                intent.putExtra("news_url", news.getUrl());
                startActivity(intent);
            }
        });
    }

    private void initNews() {
        // TODO: 使用Retrofit或其他库从后端API获取新闻数据，并添加到mNewsList中
    }
}

5. 新闻详情页 "NewsDetailActivity.java"：

public class NewsDetailActivity extends AppCompatActivity {
    private WebView mWebView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_news_detail);
        mWebView = (WebView) findViewById(R.id.web_view);
        String newsUrl = getIntent().getStringExtra("news_url");
        mWebView.loadUrl(newsUrl);
    }
}

希望这些代码能帮助您构建一个简单的新闻页面！