[英]How to load a website on a new fragment with a web view by clicking on items in the recyclerview?
[英]How to replace a fragment with another fragment with a web view to open different URLs by clicking on different items in the recyclerview?
我的問題是,我在一個名為“FragmentNewsItems”的片段中實現了一個recyclerview,它列出了cardview中的一組新聞(圖像+文本)。 所以我的任務是制作應用程序,以便當我單擊回收站視圖中的其中一個項目時,應用程序會將其替換為另一個帶有 web 視圖的片段。
一些好心人建議我創建一個點擊事件:
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());
}
}
然后將點擊事件添加到片段中:
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.
}
像這樣:
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// here open new activity or replace fragment which have webview.
}
但是您會看到一條評論說打開一個新活動或替換具有 webview 的片段。 我多次嘗試用另一個片段替換,但它根本沒有打開我的片段。 我的意思是,它會加載布局,但不會用另一個片段替換。 我是 Android 的新手,老實說,我不知道出了什么問題。 你能幫我寫代碼嗎?
@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);
}
嘗試這個。
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