如何使用 web 视图将一个片段替换为另一个片段，以通过单击 recyclerview 中的不同项目来打开不同的 URL？

Question

我的问题是，我在一个名为“FragmentNewsItems”的片段中实现了一个recyclerview，它列出了cardview中的一组新闻（图像+文本）。 所以我的任务是制作应用程序，以便当我单击回收站视图中的其中一个项目时，应用程序会将其替换为另一个带有 web 视图的片段。

一些好心人建议我创建一个点击事件：

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {

// add this line
private AdapterView.OnItemClickListener onItemClickListener;

    public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
            private ImageView image;
            private TextView text;
            FragmentNewsItems fragmentNewsItems = new FragmentNewsItems();


            public ViewHolder(@NonNull View itemView) {
                super(itemView);
                image = itemView.findViewById(R.id.image);
                text = itemView.findViewById(R.id.text);

                itemView.setOnClickListener(this);
            }

      @Override
            public void onClick(View view) {
                mAdapter.onItemHolderClick(ViewHolder.this);
            }

        }

        public void setOnItemClickListener(AdapterView.OnItemClickListener onItemClickListener) {
            this.onItemClickListener = onItemClickListener;
        }

        private void onItemHolderClick(ViewHolder holder) {
            if (onItemClickListener != null)
                onItemClickListener.onItemClick(null, holder.itemView, holder.getAdapterPosition(), holder.getItemId());
        }
}

然后将点击事件添加到片段中：

public class FragmentNewsItems extends Fragment implements AdapterView.OnItemClickListener{


View view;
    private RecyclerView recyclerView;
    private List<NewsItems> cyberNews;
    private FragmentNewsItems fragmentNewsItems;

    public FragmentNewsItems(){
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.f_news_items_layout, container, false);
        recyclerView = (RecyclerView) view.findViewById(R.id.news_items_recycler_view);

        RecyclerViewAdapter recyclerAdapter = new RecyclerViewAdapter(getContext(), cyberNews);
// add this line
recyclerAdapter .setOnItemClickListener(this);

        recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
        recyclerView.setAdapter(recyclerAdapter);
        return view;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        cyberNews = new ArrayList<>();
        cyberNews.add(new NewsItems(R.drawable.cyber1, "The  of cybersecurity in 5G-connected world"));
        cyberNews.add(new NewsItems(R.drawable.cyber2, "Google discovered several iPhone security flaws, and Apple still hasn't patched one"));
        cyberNews.add(new NewsItems(R.drawable.cyber3, "WhatsApp and Telegram media files aren't so secure"));
        cyberNews.add(new NewsItems(R.drawable.cyber4, "Microsoft Exposes Russian Cyberattacks on Phones, Printers, Video Decoders"));
        cyberNews.add(new NewsItems(R.drawable.cyber5, "Tesla demonstrated the power of The Internet of Things"));

    }


@Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// here open new activity or replace fragment which have webview.
}

像这样：

@Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// here open new activity or replace fragment which have webview.
}

但是您会看到一条评论说打开一个新活动或替换具有 webview 的片段。 我多次尝试用另一个片段替换，但它根本没有打开我的片段。 我的意思是，它会加载布局，但不会用另一个片段替换。 我是 Android 的新手，老实说，我不知道出了什么问题。 你能帮我写代码吗？

Answer 1

为 web 视图创建一个新片段并传递您的数据并使用您的活动替换新片段：

检查我对这个问题的回答：

https://stackoverflow.com/questions/58680300

Answer 2

@Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// here open new activity or replace fragment which have webview.

Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(browserIntent);
}

尝试这个。