android实现一个动态实现新闻阅读功能的代码和布局文件

以下是一个简单的动态实现新闻阅读功能的 Android 代码和布局文件示例。这个示例使用了 RecyclerView 和 CardView 来显示新闻列表和新闻详情。

布局文件 news_list_item.xml：

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:cardCornerRadius="8dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/news_image"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:scaleType="centerCrop" />

        <TextView
            android:id="@+id/news_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="8dp"
            android:textSize="18sp"
            android:textColor="@android:color/black"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/news_date"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginEnd="8dp"
            android:textSize="14sp"
            android:textColor="@android:color/darker_gray" />

    </LinearLayout>

</androidx.cardview.widget.CardView>

布局文件 news_detail.xml：

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="16dp">

        <ImageView
            android:id="@+id/news_detail_image"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:scaleType="centerCrop" />

        <TextView
            android:id="@+id/news_detail_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:textSize="24sp"
            android:textColor="@android:color/black"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/news_detail_date"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:textSize="18sp"
            android:textColor="@android:color/darker_gray" />

        <TextView
            android:id="@+id/news_detail_content"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:textSize="18sp"
            android:textColor="@android:color/black" />

    </LinearLayout>

</ScrollView>

Java 代码：

public class NewsListAdapter extends RecyclerView.Adapter<NewsListAdapter.ViewHolder> {
    private List<News> mNewsList;
    private Context mContext;

    public NewsListAdapter(Context context, List<News> newsList) {
        mContext = context;
        mNewsList = newsList;
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        final News news = mNewsList.get(position);
        holder.mNewsTitle.setText(news.getTitle());
        holder.mNewsDate.setText(news.getDate());
        Glide.with(mContext).load(news.getImageUrl()).into(holder.mNewsImage);
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(mContext, NewsDetailActivity.class);
                intent.putExtra("news", news);
                mContext.startActivity(intent);
            }
        });
    }

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

    static class ViewHolder extends RecyclerView.ViewHolder {
        ImageView mNewsImage;
        TextView mNewsTitle;
        TextView mNewsDate;

        ViewHolder(@NonNull View itemView) {
            super(itemView);
            mNewsImage = itemView.findViewById(R.id.news_image);
            mNewsTitle = itemView.findViewById(R.id.news_title);
            mNewsDate = itemView.findViewById(R.id.news_date);
        }
    }
}

public class NewsDetailActivity extends AppCompatActivity {
    private ImageView mNewsDetailImage;
    private TextView mNewsDetailTitle;
    private TextView mNewsDetailDate;
    private TextView mNewsDetailContent;

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

        mNewsDetailImage = findViewById(R.id.news_detail_image);
        mNewsDetailTitle = findViewById(R.id.news_detail_title);
        mNewsDetailDate = findViewById(R.id.news_detail_date);
        mNewsDetailContent = findViewById(R.id.news_detail_content);

        Intent intent = getIntent();
        News news = (News) intent.getSerializableExtra("news");
        mNewsDetailTitle.setText(news.getTitle());
        mNewsDetailDate.setText(news.getDate());
        mNewsDetailContent.setText(news.getContent());
        Glide.with(this).load(news.getImageUrl()).into(mNewsDetailImage);
    }
}

以上代码仅供参考，具体实现方式还需要根据具体业务需求进行修改。