如何在自定义列表视图中搜索答案

【问题标题】：How to search in Custom List View如何在自定义列表视图中搜索
【发布时间】：2017-08-16 22:27:51
【问题描述】：

嗨，我有一个自定义列表视图，但我无法编写正确的方法来仅在 CustomListView 中过滤/搜索特定的人名（基本上我是从 JSON 获取这个并存储在 ArrayList 中）...请任何人帮助我在 CustomListViewAdapter.java 中使用此方法过滤器

这是我的 Main_Activity.Java 代码

  array111.add(new AshTable(test1, test2, test3, test4, test5, test6, test7, test8, test9, test10, test11, test12, test13, test14, test15, test16, test17, test18, test19, test20, test21, test22, test23, test24, test25, test26, test27, test28, test29, test30, test31, test32, test33, test34, test35, test36, test37, test38, test39, test40, test41, test42));
            }


        } catch (JSONException e) {
            e.printStackTrace();
        }

        final CustomListViewAdapter adapter = new CustomListViewAdapter(getActivity(), R.layout.home_list_view, array111);
        lstv11.setAdapter(adapter);

        inputSearch.addTextChangedListener(new TextWatcher() {

            @Override
            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub
                String text = inputSearch.getText().toString().toLowerCase(Locale.getDefault());
                adapter.filter(text);
            }

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1,
                                          int arg2, int arg3) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onTextChanged(CharSequence arg0, int arg1, int arg2,
                                      int arg3) {
                // TODO Auto-generated method stub
            }
        });




        mSwipeRefreshLayout.setRefreshing(false);

    }

}

这是我的 CustomListViewAdapter.java 代码

public class CustomListViewAdapter extends ArrayAdapter implements Filterable {

ArrayList<AshTable> prod;
Context context;
int resource;


public CustomListViewAdapter(Context context, int resource, ArrayList<AshTable> prod) {
    super(context, resource, prod);

    this.context=context;
    this.resource=resource;
    this.prod=prod;
}

@Override
public View getView(int position, View convertView, ViewGroup parent){

    if(convertView==null){

        LayoutInflater layoutInflater=(LayoutInflater)getContext().getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        convertView=layoutInflater.inflate(R.layout.list_view,null,true);
    }

    AshTable pro=getItem(position);

    final   String  st1=pro.getCompname();
    final   String  st2=pro.getPersonname();
    final   String  st3=pro.getAddress();
    final   String  st4=pro.getMailid();
    final   String  st5=pro.getMob1();
    final   String  st6=pro.getMob2();
    final   String  st7=pro.getShowname();
    final   String  st8=pro.getDispatchdate();
    final   String  st9=pro.getDispatchtime();
    final   String  st10=pro.getStatedate();
    final   String  st11=pro.getStarttime();
    final   String  st12=pro.getSetupdate();
    final   String  st13=pro.getSetuptime();
    final   String  st14=pro.getEnddate();
    final   String  st15=pro.getEndtime();
    final   String  st16=pro.getDismanteldate();
    final   String  st17=pro.getDismanteltime();
    final   String  st18=pro.getVenu();
    final   String  st19=pro.getVenuaddress();
    final   String  st20=pro.getBoardsize();
    final   String  st21=pro.getOverallsqft();
    final   String  st22=pro.getRatepersqft();
    final   String  st23=pro.getTotalamt();
    final   String  st24=pro.getTransport();
    final   String  st25=pro.getStage();
    final   String  st26=pro.getPower();
    final   String  st27=pro.getOthercost1();
    final   String  st28=pro.getOthercost2();
    final   String  st29=pro.getGrossamt();
    final   String  st30=pro.getBillrequired();
    final   String  st31=pro.getBillinnameof();
    final   String  st32=pro.getServicetax();
    final   String  st33=pro.getTotalamt2();
    final   String  st34=pro.getAdvanceamt();
    final   String  st35=pro.getCreditperiod();
    final   String  st36=pro.getPhotoname();
    final   String  st37=pro.getPhotomob();
    final   String  st38=pro.getPhotoemail();
    final   String  st39=pro.getMarketingname();
    final   String  st40=pro.getRemark();



    TextView txt1=(TextView)convertView.findViewById(R.id.textView11);
    txt1.setText(pro.getPersonname());

    TextView txt2=(TextView)convertView.findViewById(R.id.textView22);
    txt2.setText(pro.getMob1());

    TextView txt3=(TextView)convertView.findViewById(R.id.textView33);
    txt3.setText(pro.getShowname());

    TextView txt5=(TextView)convertView.findViewById(R.id.textView44);
    txt5.setText(pro.getStatedate());

    TextView txt4=(TextView)convertView.findViewById(R.id.textView6);
    txt4.setText(pro.getEnddate());

    TextView txt6=(TextView)convertView.findViewById(R.id.textView55);
    txt6.setText(pro.getBoardsize());

    TextView txt7=(TextView)convertView.findViewById(R.id.teextView);
    txt7.setText("( "+pro.getCompname()+" )");



    Button imgb=(Button) convertView.findViewById(R.id.imageButton2);
    imgb.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent().setClass(getContext(), Full_info_page.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

            intent.putExtra("name1", String.valueOf(st1));
            intent.putExtra("name2", String.valueOf(st2));
            intent.putExtra("name3", String.valueOf(st3));
            intent.putExtra("name4", String.valueOf(st4));
            intent.putExtra("name5", String.valueOf(st5));
            intent.putExtra("name6", String.valueOf(st6));
            intent.putExtra("name7", String.valueOf(st7));
            intent.putExtra("name8", String.valueOf(st8));
            intent.putExtra("name9", String.valueOf(st9));
            intent.putExtra("name10", String.valueOf(st10));
            intent.putExtra("name11", String.valueOf(st11));
            intent.putExtra("name12", String.valueOf(st12));
            intent.putExtra("name13", String.valueOf(st13));
            intent.putExtra("name14", String.valueOf(st14));
            intent.putExtra("name15", String.valueOf(st15));
            intent.putExtra("name16", String.valueOf(st16));
            intent.putExtra("name17", String.valueOf(st17));
            intent.putExtra("name18", String.valueOf(st18));
            intent.putExtra("name19", String.valueOf(st19));
            intent.putExtra("name20", String.valueOf(st20));
            intent.putExtra("name21", String.valueOf(st21));
            intent.putExtra("name22", String.valueOf(st22));
            intent.putExtra("name23", String.valueOf(st23));
            intent.putExtra("name24", String.valueOf(st24));
            intent.putExtra("name25", String.valueOf(st25));
            intent.putExtra("name26", String.valueOf(st26));
            intent.putExtra("name27", String.valueOf(st27));
            intent.putExtra("name28", String.valueOf(st28));
            intent.putExtra("name29", String.valueOf(st29));
            intent.putExtra("name30", String.valueOf(st30));
            intent.putExtra("name31", String.valueOf(st31));
            intent.putExtra("name32", String.valueOf(st32));
            intent.putExtra("name33", String.valueOf(st33));
            intent.putExtra("name34", String.valueOf(st34));
            intent.putExtra("name35", String.valueOf(st35));
            intent.putExtra("name36", String.valueOf(st36));
            intent.putExtra("name37", String.valueOf(st37));
            intent.putExtra("name38", String.valueOf(st38));
            intent.putExtra("name39", String.valueOf(st39));
            intent.putExtra("name40", String.valueOf(st40));


            context.startActivity(intent);
        }
    });

    return convertView;
}

public void filter(String charText) {
    charText = charText.toLowerCase(Locale.getDefault());

    if (charText.length() == 0) {

    } else {

    }
    notifyDataSetChanged();
}

}

请有人帮我用这个方法过滤来只过滤人名或日期....在此先感谢您

【问题讨论】：

你能澄清你的问题吗？您是要返回仅包含人名的列表还是仅包含一个人的列表？我对您希望过滤后的列表是什么样子感到有些困惑。
就像搜索字段选项的工作方式一样，如果我输入字母 p，我希望所有列表视图都提供该名称（如 Parrot、Professor、Player....）

标签： android custom-lists searchfiltercollection

【解决方案1】：

尽管我已经粘贴了完整的适配器类供您参考，但请根据此示例代码更改您的适配器类并专注于 getFilter 方法。

public class CustomListAdapter extends BaseAdapter

{
    private Activity activity;
    private LayoutInflater inflater;
    private List<Movie> movieItems;
    private List<Movie> movieItemSearched = null;
    private List<Movie> originalMovieList;
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();

    public CustomListAdapter(Activity activity, List<Movie> movieItems) {
        this.activity = activity;
        this.movieItems = movieItems;
        this.originalMovieList = new ArrayList<Movie>(movieItems);
        this.movieItemSearched = new ArrayList<Movie>();
        this.movieItemSearched.addAll(movieItems);
    }
    //Add Below Method
    public void reloadData(){
        this.originalMovieList = new ArrayList<Movie>(movieItems);
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return movieItems.size();
    }

    @Override
    public Object getItem(int location) {
        return movieItems.get(location);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        if (inflater == null)
            inflater = (LayoutInflater) activity
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if (convertView == null)
            convertView = inflater.inflate(R.layout.list_row, null);

        if (imageLoader == null)
            imageLoader = AppController.getInstance().getImageLoader();
        NetworkImageView thumbNail = (NetworkImageView) convertView
                .findViewById(R.id.thumbnail);
        TextView title = (TextView) convertView.findViewById(R.id.title);
        TextView rating = (TextView) convertView.findViewById(R.id.rating);
        TextView genre = (TextView) convertView.findViewById(R.id.genre);
        TextView year = (TextView) convertView.findViewById(R.id.releaseYear);
        TextView appuser = (TextView) convertView.findViewById(R.id.appuser);
        TextView reg = (TextView) convertView.findViewById(R.id.reg);



//      LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(100, 100);
//      iv.setLayoutParams(layoutParams);
        // getting movie data for the row
        Movie m = movieItems.get(position);

        // thumbnail image
        thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);

        // title
        title.setText(m.getTitle());

        // rating
        rating.setText(m.getRating());

        // genre
        genre.setText(m.getGenre());

        appuser.setText(m.getApp_user());

        reg.setText(m.getReg());

        year.setText(String.valueOf(m.getYear()));

        return convertView;
    }




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

            @Override
            protected FilterResults performFiltering(CharSequence constraint) {

                String filterString = constraint.toString().toLowerCase();

                FilterResults results = new FilterResults();




                final List<Movie> list = originalMovieList;

                int count = list.size();
                final ArrayList<Movie> nlist = new ArrayList<Movie>(count);

                String filterableString1,filterableString2;
                        /*
                        for (int i = 0; i < count; i++) {
                            filterableString = list.get(i).getTitle();
                            if (filterableString.toLowerCase().contains(filterString)) {
                               // nlist.add(filterableString);
                                nlist.add(list.get(i));
                            }
                        }
                        */
                for (Movie movie: originalMovieList) {
                    filterableString1 = movie.getTitle();
                    filterableString2 = movie.getRating();

                    if (filterableString1.toLowerCase().contains(filterString)||filterableString2.toLowerCase().contains(filterString)) {
                        // nlist.add(filterableString);
                        nlist.add(movie);
                    }
                }

                results.values = nlist;
                results.count = nlist.size();

                return results;
            }

            @SuppressWarnings("unchecked")
            @Override
            protected void publishResults(CharSequence constraint,
                                          FilterResults results) {
                movieItems.clear();
                movieItems.addAll((ArrayList<Movie>) results.values);
                notifyDataSetChanged();

            }
        };
    }


}

并在您的搜索视图中像这样使用此方法：

 @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        MenuInflater inflater = getMenuInflater();
        // Inflate menu to add items to action bar if it is present.
        inflater.inflate(R.menu.main, menu);

        SearchManager manager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        SearchView search = (SearchView) menu.findItem(R.id.action_search).getActionView();
        search.setSearchableInfo(manager.getSearchableInfo(getComponentName()));
        search.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {

                adapter.getFilter(getComponentName()).filter(newText);
                adapter.notifyDataSetChanged();


                return false;
            }

        });

        return true;
    }

【讨论】：

【解决方案2】：

请使用此代码：

 array111.add(new AshTable(test1, test2, test3, test4, test5, test6, test7, test8, test9, test10, test11, test12, test13, test14, test15, test16, test17, test18, test19, test20, test21, test22, test23, test24, test25, test26, test27, test28, test29, test30, test31, test32, test33, test34, test35, test36, test37, test38, test39, test40, test41, test42));
}


} catch (JSONException e) {
        e.printStackTrace();
        }

final CustomListViewAdapter adapter = new CustomListViewAdapter(getActivity(), R.layout.home_list_view, array111);
        lstv11.setAdapter(adapter);

        inputSearch.addTextChangedListener(new TextWatcher() {

@Override
public void afterTextChanged(Editable arg0) {
        // TODO Auto-generated method stub

        }

@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
        int arg2, int arg3) {
        // TODO Auto-generated method stub
        }

@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
        int arg3) {
        if (YourClassName.this.adapter != null)
        ((YourAdapterClassName) YourClassName.this.adapter).getFilter().filter(arg0);

        }
        });




        mSwipeRefreshLayout.setRefreshing(false);

        }

 }

和你的适配器类

public class YourAdapterClass extends BaseAdapter implements Filterable {
    ArrayList<AshTable> prod;
    ArrayList<AshTable> tempList;
    Context context;
    int resource;


    public CustomListViewAdapter(Context context, int resource, ArrayList<AshTable> prod) {
        super(context, resource, prod);

        this.context=context;
        this.resource=resource;
        this.prod=prod;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent){

        if(convertView==null){

            LayoutInflater layoutInflater=(LayoutInflater)getContext().getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

            convertView=layoutInflater.inflate(R.layout.list_view,null,true);
        }

        AshTable pro=getItem(position);

        final   String  st1=pro.getCompname();
        final   String  st2=pro.getPersonname();
        final   String  st3=pro.getAddress();
        final   String  st4=pro.getMailid();
        final   String  st5=pro.getMob1();
        final   String  st6=pro.getMob2();
        final   String  st7=pro.getShowname();
        final   String  st8=pro.getDispatchdate();
        final   String  st9=pro.getDispatchtime();
        final   String  st10=pro.getStatedate();
        final   String  st11=pro.getStarttime();
        final   String  st12=pro.getSetupdate();
        final   String  st13=pro.getSetuptime();
        final   String  st14=pro.getEnddate();
        final   String  st15=pro.getEndtime();
        final   String  st16=pro.getDismanteldate();
        final   String  st17=pro.getDismanteltime();
        final   String  st18=pro.getVenu();
        final   String  st19=pro.getVenuaddress();
        final   String  st20=pro.getBoardsize();
        final   String  st21=pro.getOverallsqft();
        final   String  st22=pro.getRatepersqft();
        final   String  st23=pro.getTotalamt();
        final   String  st24=pro.getTransport();
        final   String  st25=pro.getStage();
        final   String  st26=pro.getPower();
        final   String  st27=pro.getOthercost1();
        final   String  st28=pro.getOthercost2();
        final   String  st29=pro.getGrossamt();
        final   String  st30=pro.getBillrequired();
        final   String  st31=pro.getBillinnameof();
        final   String  st32=pro.getServicetax();
        final   String  st33=pro.getTotalamt2();
        final   String  st34=pro.getAdvanceamt();
        final   String  st35=pro.getCreditperiod();
        final   String  st36=pro.getPhotoname();
        final   String  st37=pro.getPhotomob();
        final   String  st38=pro.getPhotoemail();
        final   String  st39=pro.getMarketingname();
        final   String  st40=pro.getRemark();



        TextView txt1=(TextView)convertView.findViewById(R.id.textView11);
        txt1.setText(pro.getPersonname());

        TextView txt2=(TextView)convertView.findViewById(R.id.textView22);
        txt2.setText(pro.getMob1());

        TextView txt3=(TextView)convertView.findViewById(R.id.textView33);
        txt3.setText(pro.getShowname());

        TextView txt5=(TextView)convertView.findViewById(R.id.textView44);
        txt5.setText(pro.getStatedate());

        TextView txt4=(TextView)convertView.findViewById(R.id.textView6);
        txt4.setText(pro.getEnddate());

        TextView txt6=(TextView)convertView.findViewById(R.id.textView55);
        txt6.setText(pro.getBoardsize());

        TextView txt7=(TextView)convertView.findViewById(R.id.teextView);
        txt7.setText("( "+pro.getCompname()+" )");



        Button imgb=(Button) convertView.findViewById(R.id.imageButton2);
        imgb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent().setClass(getContext(), Full_info_page.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

                intent.putExtra("name1", String.valueOf(st1));
                intent.putExtra("name2", String.valueOf(st2));
                intent.putExtra("name3", String.valueOf(st3));
                intent.putExtra("name4", String.valueOf(st4));
                intent.putExtra("name5", String.valueOf(st5));
                intent.putExtra("name6", String.valueOf(st6));
                intent.putExtra("name7", String.valueOf(st7));
                intent.putExtra("name8", String.valueOf(st8));
                intent.putExtra("name9", String.valueOf(st9));
                intent.putExtra("name10", String.valueOf(st10));
                intent.putExtra("name11", String.valueOf(st11));
                intent.putExtra("name12", String.valueOf(st12));
                intent.putExtra("name13", String.valueOf(st13));
                intent.putExtra("name14", String.valueOf(st14));
                intent.putExtra("name15", String.valueOf(st15));
                intent.putExtra("name16", String.valueOf(st16));
                intent.putExtra("name17", String.valueOf(st17));
                intent.putExtra("name18", String.valueOf(st18));
                intent.putExtra("name19", String.valueOf(st19));
                intent.putExtra("name20", String.valueOf(st20));
                intent.putExtra("name21", String.valueOf(st21));
                intent.putExtra("name22", String.valueOf(st22));
                intent.putExtra("name23", String.valueOf(st23));
                intent.putExtra("name24", String.valueOf(st24));
                intent.putExtra("name25", String.valueOf(st25));
                intent.putExtra("name26", String.valueOf(st26));
                intent.putExtra("name27", String.valueOf(st27));
                intent.putExtra("name28", String.valueOf(st28));
                intent.putExtra("name29", String.valueOf(st29));
                intent.putExtra("name30", String.valueOf(st30));
                intent.putExtra("name31", String.valueOf(st31));
                intent.putExtra("name32", String.valueOf(st32));
                intent.putExtra("name33", String.valueOf(st33));
                intent.putExtra("name34", String.valueOf(st34));
                intent.putExtra("name35", String.valueOf(st35));
                intent.putExtra("name36", String.valueOf(st36));
                intent.putExtra("name37", String.valueOf(st37));
                intent.putExtra("name38", String.valueOf(st38));
                intent.putExtra("name39", String.valueOf(st39));
                intent.putExtra("name40", String.valueOf(st40));


                context.startActivity(intent);
            }
        });

        return convertView;
    }

    public Filter getFilter() {

        return mFilter;
    }




    private class ItemFilter extends Filter {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            String filterString = constraint.toString().toLowerCase();
            Filter.FilterResults results = new FilterResults();
            int count = tempList.size();
            final ArrayList<AshTable> nlist = new ArrayList<>();
            String filterableString ;
            for (int i = 0; i < count; i++) {
                filterableString = tempList.get(i).toString();
                if (filterableString.toLowerCase().contains(filterString)) {
                    nlist.add(tempList.get(i));
                }
            }
            results.values = nlist;
            results.count = nlist.size();
            return results;

        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            prod = (ArrayList<AshTable>) results.values;
            notifyDataSetChanged();
        }
    }


    }
}

【讨论】：

我已经在 GIT-Hub 中发布了我的项目...请你看看它并找到错误...github.com/raj5140/MusicVideos

【解决方案3】：

基本上，您要做的就是检查列表中的每个值，看看它是否满足过滤器要求，然后将其添加到临时列表中。获得完整列表后，将临时列表换成阵列适配器列表，在您的情况下为 prod。您还必须考虑没有过滤器或检索完整列表，因此您还需要保留对该列表的引用。您所要做的就是创建另一个数组，并将原始列表的副本分配给参考列表。这一切可能看起来像这样：

//Create reference list to keep track of complete list.
ArrayList<AshTable> refList = new ArrayList<AshTable>(); 

public CustomListViewAdapter(Context context, int resource, ArrayList<AshTable> prod) {
    super(context, resource, prod);

    this.context=context;
    this.resource=resource;
    this.prod=prod;
    this.refList = prod;
}



//Filter method
public void filter(String charText) {
    charText = charText.toLowerCase(Locale.getDefault());

    if (charText.length() == 0) {

        //if there is no data to filter, replace complete list
        prod.clear();
        prod.addAll(refList); 
    } else {


        //Temp array to store values that meet filter requirements
        ArrayList<AshTable> tempTable = new ArrayList<AshTable>(); 
        for(AshTable pro : prod){
            //here you can add any other filter requirements
            //just iterate through each item and check it.
            if(pro.getPersonname().contains(charText)){
                tempTable.add(pro); 
            }
        }

        //put filtered data into arraylist
        prod.clear();
        prod.addAll(tempTable);
    }
    notifyDataSetChanged();
}

【讨论】：

兄弟 if(table.getPersonname().contains(charText)) 中的表格是什么
我不确定我在哪里做错了，但是当我在编辑文本中输入任何字符时，一切都是空白的
@RajivReddy 使用调试器逐步完成
我希望我告诉过你我从 JSON (Link) 获取数据
我已经在 GIT-Hub 中发布了我的项目...请你看看它并找到错误...github.com/raj5140/MusicVideos