Comment fusionné même en-tête nommé dans RecyclerView extensible

Question

J'ai une vue recycleur extensible comme celui-ci

Je veux même en-tête du nom fusionné (tel que « novembre 17,2016 »). et ajoutez leur enfant à un endroit. et la position de l'icône doit rester la même. Comment faire ça?

Voici ma réponse JSON:

{"Table": 

[{"filedate":"Oct 25, 2016","clientid":4}, 
{"filedate":"Nov 17, 2016","clientid":4}, 
{"filedate":"Nov 16, 2016","clientid":4}], 

"Table1": 

[{"filedate":"Oct 25, 2016","file1":"12.txt","category":"Category : Bank Statement"}, 
{"filedate":"Nov 16, 2016","file1":"Readme.docx","category":"Category : Bank Statement"}, 
{"filedate":"Nov 17, 2016","file1":"hts-log.txt","category":"Category : Bills"}, 
{"filedate":"Nov 17, 2016","file1":"cookies.txt","category":"Category : Others",}, 
{"filedate":"Nov 17, 2016","file1":"readme.txt","category":"Category : Invoice",}]} 

Voici mon code pour obtenir une réponse JSON:

private void prepareListData() { 


     // Volley's json array request object 
     StringRequest stringRequest = new StringRequest(Request.Method.POST, REGISTER_URL, 
       new Response.Listener<String>() { 
        @Override 
        public void onResponse(String response) { 
//      Log.d(TAG, response.toString()); 
//      hidePDialog(); 


         JSONObject object = null; 
         try { 
          object = new JSONObject(response); 
         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 

         JSONArray jsonarray = null; 
         JSONArray jsonarray1 = null; 
         try { 
          jsonarray = object.getJSONArray("Table1"); 
          jsonarray1 = object.getJSONArray("Table1"); 

         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 
//       JSONArray jsonarray1 = object.getJSONArray("Table2"); 
         for (int i = 0; i < jsonarray.length(); i++) { 
          try { 

           JSONObject obj = jsonarray.getJSONObject(i); 
//         Movie movie = new Movie(); 
//         movie.setFiledate(obj.getString("filedate")); 
           String str = obj.optString("filedate").trim(); 


           Log.d("test", str); 

           data.add(new ExpandableListAdapter.Item(ExpandableListAdapter.HEADER, str)); 

//         Toast.makeText(getApplicationContext(), lth, Toast.LENGTH_LONG).show(); 

            for (int j = 0; j < jsonarray1.length(); j++) { 

             try { 

              JSONObject obj1 = jsonarray1.getJSONObject(j); 
              String str1 = obj1.optString("filedate").trim(); 
              String str2 = obj1.optString("file1").trim(); 
              String str3 = obj1.optString("filename").trim(); 
              String str4 = obj1.optString("category").trim(); 
               Toast.makeText(getApplicationContext(), "server data respone", Toast.LENGTH_LONG).show(); 
               Toast.makeText(getApplicationContext(), "test"+str1, Toast.LENGTH_LONG).show(); 
              if (str == str1) { 
               data.add(new ExpandableListAdapter.Item(ExpandableListAdapter.CHILD, str4)); 
               data.add(new ExpandableListAdapter.Item(ExpandableListAdapter.CHILD, str2)); 
              } 
               Toast.makeText(getApplicationContext(), str1, Toast.LENGTH_LONG).show(); 

              //if condition 


             } catch (JSONException e) { 
//           Log.e(TAG, "JSON Parsing error: " + e.getMessage()); 
             } 

            } 

           // adding movie to movies array 



          } catch (JSONException e) { 
           Log.e("gdshfsjkg", "JSON Parsing error: " + e.getMessage()); 
          } 

         }      Log.d("test", String.valueOf(data)); 




         // notifying list adapter about data changes 
         // so that it renders the list view with updated data 
//      adapterheader.notifyDataSetChanged(); 
         recyclerview.setAdapter(new ExpandableListAdapter(data)); 
        } 
       }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
//    VolleyLog.d(TAG, "Error: " + error.getMessage()); 
//    hidePDialog(); 

      } 
     }){ 
      @Override 
      protected Map<String, String> getParams() { 
       Map<String, String> params = new HashMap<String, String>(); 
       params.put(CLIENT, "4"); 
       return params; 
      } 
     }; 
     // Adding request to request queue 
     MyApplication.getInstance().addToRequestQueue(stringRequest); 
    } 

Adapeter classe

public class ExpandableListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { 
    public static final int HEADER = 0; 
    public static final int CHILD = 1; 

    private List<Item> data; 

    public ExpandableListAdapter(List<Item> data) { 
     this.data = data; 
    } 

    @Override 
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int type) { 
     View view = null; 
     Context context = parent.getContext(); 
     float dp = context.getResources().getDisplayMetrics().density; 
     int subItemPaddingLeft = (int) (18 * dp); 
     int subItemPaddingTopAndBottom = (int) (5 * dp); 
     LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     switch (type) { 
      case HEADER: 

       view = inflater.inflate(R.layout.list_header, parent, false); 
       ListHeaderViewHolder header = new ListHeaderViewHolder(view); 
       return header; 
      case CHILD: 
       view = inflater.inflate(R.layout.listchild, parent, false); 
       ListChildViewHolder child = new ListChildViewHolder(view); 
       return child; 
     } 
     return null; 
    } 

    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
     final Item item = data.get(position); 
     switch (item.type) { 
      case HEADER: 
       final ListHeaderViewHolder itemController = (ListHeaderViewHolder) holder; 
       itemController.refferalItem = item; 
       itemController.header_title.setText(item.text); 
       if (item.invisibleChildren == null) { 
        itemController.btn_expand_toggle.setImageResource(R.drawable.circle_minus); 
       } else { 
        itemController.btn_expand_toggle.setImageResource(R.drawable.circle_plus); 
       } 
       itemController.btn_expand_toggle.setOnClickListener(new View.OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         if (item.invisibleChildren == null) { 
          item.invisibleChildren = new ArrayList<Item>(); 
          int count = 0; 
          int pos = data.indexOf(itemController.refferalItem); 
          while (data.size() > pos + 1 && data.get(pos + 1).type == CHILD) { 
           item.invisibleChildren.add(data.remove(pos + 1)); 
           count++; 
          } 
          notifyItemRangeRemoved(pos + 1, count); 
          itemController.btn_expand_toggle.setImageResource(R.drawable.circle_plus); 
         } else { 
          int pos = data.indexOf(itemController.refferalItem); 
          int index = pos + 1; 
          for (Item i : item.invisibleChildren) { 
           data.add(index, i); 
           index++; 
          } 
          notifyItemRangeInserted(pos + 1, index - pos - 1); 
          itemController.btn_expand_toggle.setImageResource(R.drawable.circle_minus); 
          item.invisibleChildren = null; 
         } 
        } 
       }); 
       break; 
      case CHILD: 
       boolean showIcon = position > 1 && getItemViewType(position) == CHILD && getItemViewType(position - 2) == HEADER; 

       final ListChildViewHolder itemController1 = (ListChildViewHolder) holder; 
       itemController1.refferalItem = item; 
       itemController1.header_title1.setText(item.text); 
       itemController1.btn_expand_toggle1.setVisibility((showIcon) ? View.VISIBLE : View.GONE); 
       break; 
     } 
    } 

    @Override 
    public int getItemViewType(int position) { 
     return data.get(position).type; 
    } 

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

    private static class ListHeaderViewHolder extends RecyclerView.ViewHolder { 
     public TextView header_title; 
     public ImageView btn_expand_toggle; 
     public Item refferalItem; 

     public ListHeaderViewHolder(View itemView) { 
      super(itemView); 
      header_title = (TextView) itemView.findViewById(R.id.header_title); 
      btn_expand_toggle = (ImageView) itemView.findViewById(R.id.btn_expand_toggle); 
     } 
    } 
    private static class ListChildViewHolder extends RecyclerView.ViewHolder { 
     public TextView header_title1; 
     public ImageView btn_expand_toggle1; 
     public Item refferalItem; 

     public ListChildViewHolder(View itemView) { 
      super(itemView); 
      header_title1 = (TextView) itemView.findViewById(R.id.header_title1); 
      btn_expand_toggle1 = (ImageView) itemView.findViewById(R.id.btn_expand_toggle1); 
     } 
    } 
    public static class Item { 
     public int type; 
     public String text; 
     public List<Item> invisibleChildren; 

     public Item() { 
     } 

     public Item(int type, String text) { 
      this.type = type; 
      this.text = text; 
     } 
    } 
} 

Answer 1

Vous pouvez utiliser la bibliothèque SectionedRecyclerViewAdapter à groupez vos objets Item sous le même en-tête.

d'abord créer une classe Section:

class MySection extends StatelessSection { 

    Item item; 

    public MySection(Item item) { 
     // call constructor with layout resources for this Section header, footer and items 
     super(R.layout.section_header, R.layout.section_item); 

     this.item = item; 
    } 

    @Override 
    public int getContentItemsTotal() { 
     return item.invisibleChildren.size(); // number of items of this section, TODO: check if invisibleChildren is null and return 0 
    } 

    @Override 
    public RecyclerView.ViewHolder getItemViewHolder(View view) { 
     // return a custom instance of ViewHolder for the items of this section 
     return new MyItemViewHolder(view); 
    } 

    @Override 
    public void onBindItemViewHolder(RecyclerView.ViewHolder holder, int position) { 
     MyItemViewHolder itemHolder = (MyItemViewHolder) holder; 

     // bind your view here 
     itemHolder.tvItem.setText(item.invisibleChildren.get(position).text); 
    } 

    @Override 
    public RecyclerView.ViewHolder getHeaderViewHolder(View view) { 
     return new SimpleHeaderViewHolder(view); 
    } 

    @Override 
    public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) { 
     MyHeaderViewHolder headerHolder = (MyHeaderViewHolder) holder; 

     // bind your header view here 
     headerHolder.tvItem.setText(item.text); 
    } 
} 

Ensuite, vous configurez le RecyclerView avec vos sections:

// Create an instance of SectionedRecyclerViewAdapter 
SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter(); 

// Add your Sections to the adapter 
sectionAdapter.addSection(new MySection(data.get(0)); 
sectionAdapter.addSection(new MySection(data.get(1)); //TODO: add a for loop and add all Item objects from data list 

// Set up your RecyclerView with the SectionedRecyclerViewAdapter 
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview); 
recyclerView.setLayoutManager(new LinearLayoutManager(getContext())); 
recyclerView.setAdapter(sectionAdapter); 

Pour le rendre extensible, suivre l'exemple here.