Question

我有一个商家列表，我正在应用过滤器来搜索地址或名称，过滤器工作正常。它给出了适当的过滤结果列表。但是，如果我再次清空编辑文本，我应该看到原始列表，但我看到的计数与原始列表不同。

示例，在列表中我有7个商家，我会对其进行过滤，并在列表中显示两个过滤的商家，现在如果我清空编辑文本，我只看到5个商家，无法看到7个商家的原始列表。

适配器：

 public class SearchedMerchantsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    static final int LOAD_MERCHANTS = 0;
    private Context context;
    public ArrayList<Merchants> list;
    public ArrayList<Merchants> baselist = new ArrayList<>();


    public SearchedMerchantsAdapter(Context context, ArrayList<Merchants> list) {
        this.context = context;
        this.list = list;
        this.baselist = list;
    }

    @Override
    public int getItemViewType(int position) {

        Object obj = list.get(position);

        if (obj instanceof Merchants) return LOAD_MERCHANTS;

        return super.getItemViewType(position);
    }


    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        int viewType = holder.getItemViewType();
        switch (viewType) {

            case LOAD_MERCHANTS:
                LoadSearchedMerchants loadSearchedMerchants = (LoadSearchedMerchants) holder;
                retriveAllMerchants(loadSearchedMerchants, position);
                break;
        }

    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, final int viewType) {
        RecyclerView.ViewHolder viewHolder = null;
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        switch (viewType) {
            case LOAD_MERCHANTS:
                View v_image_msg = inflater.inflate(R.layout.search_merchant_layout, parent, false);
                viewHolder = new LoadSearchedMerchants(v_image_msg);
                break;
        }

        return viewHolder;
    }

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

    public void retriveAllMerchants(final LoadSearchedMerchants holder, int position) {

        final Merchants data = (Merchants) list.get(position);

        holder.tv_kiarana_name.setText(data.getKirana_name());
        holder.tv_address.setText(data.getMerchant_address());



        holder.lay_row.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                Intent i = new Intent(context, MerchantProfileActivity.class);

                i.putExtra("cont_name",data.getMerchant_name());
                i.putExtra("kirana_name",data.getKirana_name());
                i.putExtra("email_id",data.getEmail_id());
                i.putExtra("phone_no",data.getPhone());
                i.putExtra("address",data.getMerchant_address());

                context.startActivity(i);

            }
        });

        holder.btnAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final SessionData sessionData;
                final String sessionUserId,access_token;

                sessionData=new SessionData(context);
                sessionUserId = sessionData.getString("user_id","-1");
                access_token = sessionData.getString("api_key", "-1");

                new SendRequestAsyncTask(context).execute(sessionUserId,access_token,data.getMerchant_id().toString());

            }
        });

    }

    public Filter getFilter() {
        return new Filter() {

            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                final FilterResults oReturn = new FilterResults();
                final ArrayList<Merchants> results = new ArrayList<>();

                if (constraint != null) {
                    if (baselist != null && baselist.size() > 0) {
                        for (final Merchants g : baselist) {
                            if (g.getKirana_name()
                                    .contains(constraint.toString()) || g.getMerchant_address().contains(constraint.toString()))
                                results.add(g);
                        }
                    }
                    oReturn.values = results;
                }
                return oReturn;
            }

            @SuppressWarnings("unchecked")
            @Override
            protected void publishResults(CharSequence constraint,
                                          FilterResults results) {
                list = (ArrayList<Merchants>) results.values;
                notifyDataSetChanged();
            }
        };
    }
}

这可能是什么原因？谢谢..

Answer 1

你能试试吗？

@Override
            protected FilterResults performFiltering(CharSequence constraint) {
                final FilterResults oReturn = new FilterResults();
                final ArrayList<Merchants> results = new ArrayList<>();


                if (charSequence != null && charSequence.length() > 0) {
                    if (baselist != null && baselist.size() > 0) {
                        for (final Merchants g : baselist) {
                            if (g.getKirana_name()
                                    .contains(constraint.toString()) || g.getMerchant_address().contains(constraint.toString()))
                                results.add(g);
                        }
                    }
                    oReturn.values = results;
                    oReturn.count = results.size();
                }
                else
                 {
                   oReturn.values = baselist;
                   oReturn.count = baselist.size();
                 }
                return oReturn;
            }

<强>更新

在适配器中创建一个方法..注释掉getFilter()和界面Filterable

public void filterData(String compareString)
{
list.clear();
if (baselist != null && baselist.size() > 0) {
                        for (final Merchants g : baselist) {
                            if (g.getKirana_name()
                                    .contains(compareString) || g.getMerchant_address().contains(compareString))
                                list.add(g);
                        }
                    }
notifyDataSetChanged();
}

最后通过edittext更改侦听器

调用此方法

喜欢adapter.filterData("StringwhichisChangedFromEdittext")

希望得到这个帮助。

Answer 2

在适配器中创建此方法：

public Item getItemAtPosition(int position)
    {
        return list.get(position);
    }

现在，当发生点击操作时，只需调用此方法：

adapter.getItemAtPosition(position).getMerchant_name()

Answer 3

如果用户没有输入任何内容，则返回整个列表

 public Filter getFilter() {
    return new Filter() {

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            final FilterResults oReturn = new FilterResults();
            final ArrayList<Merchants> results = new ArrayList<>();

             if(TextUtils.isEmpty(constraint)){
              oReturn.values = baselist==null?new ArrayList() : baselist ;
              return oReturn.values ;
              }

            if (constraint != null) {
                if (baselist != null && baselist.size() > 0) {
                    for (final Merchants g : baselist) {
                        if (g.getKirana_name()
                                .contains(constraint.toString()) || g.getMerchant_address().contains(constraint.toString()))
                            results.add(g);
                    }
                }
                oReturn.values = results;
            }
            return oReturn;
        }

        @SuppressWarnings("unchecked")
        @Override
        protected void publishResults(CharSequence constraint,
                                      FilterResults results) {
            list = (ArrayList<Merchants>) results.values;
            notifyDataSetChanged();
        }
    };
}

过滤列表后，如果要检查原始列表，则返回错误的列表大小

3 个答案: