带有搜索框的 ListView 自定义过滤器在过滤时会提供错误的选择项

Question

我有一个列表视图被顶部的编辑文本过滤。然而，当我点击搜索的项目时，我得到了另一个数据被选中的结果。

比如我的列表中有A、B、C，当我想在列表中搜索以B开头的东西时，我会得到B，但是当我点击B时，它returns我是A。

public class InformationActivity extends AppCompatActivity {
    private ArrayList<Actors> actorsList;
    private ActorAdapter adapter;
    private String strId[],strNama[],strDeskripsi[],strFoto[],strMarker[],strLng[],strLat[];

    private EditText et;
    int textlength = 0;
    private ArrayList<Actors> array_sort= new ArrayList<Actors>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_information);

        actorsList = new ArrayList<Actors>();

        registerReceiver(mNetworkReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));

        et = (EditText) findViewById(R.id.EditText01);

        final ListView listview = (ListView)findViewById(R.id.list);
        adapter = new ActorAdapter(getApplicationContext(), R.layout.row, actorsList);
        listview.setAdapter(adapter);

        listview.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
                // TODO Auto-generated method stub
                String daftarId = strId[position], daftarNama = strNama[position], daftarDeskripsi = strDeskripsi[position], daftarFoto = strFoto[position], daftarMarker = strMarker[position], daftarLng = strLng[position], daftarLat = strLat[position];
                Intent i = new Intent(InformationActivity.this,Detail_Activity.class);
                i.putExtra("id",daftarId);
                i.putExtra("nama",daftarNama);
                i.putExtra("deskripsi",daftarDeskripsi);
                i.putExtra("foto",daftarFoto);
                i.putExtra("marker",daftarMarker);
                i.putExtra("lng",daftarLng);
                i.putExtra("lat",daftarLat);
                startActivity(i);
            }
        });

        et.addTextChangedListener(new TextWatcher()
        {
            public void afterTextChanged(Editable s)
            {
                // Abstract Method of TextWatcher Interface.
            }
            public void beforeTextChanged(CharSequence s,
                                          int start, int count, int after)
            {
                // Abstract Method of TextWatcher Interface.
            }
            public void onTextChanged(CharSequence s,
                                      int start, int before, int count)
            {
                textlength = et.getText().length();
                array_sort.clear();
                for (int i = 0; i < actorsList.size(); i++)
                {
                    String nama = actorsList.get(i).getName();
                    if (textlength <= nama.length())
                    {
                        if (et.getText().toString().equalsIgnoreCase( (String) nama.subSequence(0,textlength) ) )
                        {
                            array_sort.add(actorsList.get(i));
                        }
                    }
                }

                adapter = new ActorAdapter(getApplicationContext(), R.layout.row, array_sort);
                listview.setAdapter(adapter);
            }
        });
    }

    class JSONAsyncTask extends AsyncTask<String, Void, Boolean> {

        ProgressDialog dialog;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            dialog = new ProgressDialog(InformationActivity.this);
            dialog.setMessage("Silahkan tunggu");
            dialog.setTitle("Mendapatkan data...");
            dialog.show();
            dialog.setCancelable(true);
        }

        @Override
        protected Boolean doInBackground(String... urls) {
            try {
                HttpGet httppost = new HttpGet(urls[0]);
                HttpClient httpclient = new DefaultHttpClient();
                HttpResponse response = httpclient.execute(httppost);
                int status = response.getStatusLine().getStatusCode();
                if (status == 200) {
                    HttpEntity entity = response.getEntity();
                    String data = EntityUtils.toString(entity);
                    JSONObject jsono = new JSONObject(data);
                    JSONArray konten = jsono.getJSONArray("konten");
                    strId = new String[konten.length()];
                    strNama = new String[konten.length()];
                    strDeskripsi = new String[konten.length()];
                    strFoto = new String[konten.length()];
                    strMarker = new String[konten.length()];
                    strLng = new String[konten.length()];
                    strLat = new String[konten.length()];
                    for (int i = 0; i < konten.length(); i++) {
                        JSONObject object = konten.getJSONObject(i);
                        strId[i] = object.getString("id");
                        strNama[i] = object.getString("nama");
                        strDeskripsi[i] = object.getString("deskripsi");
                        strFoto[i] = object.getString("foto");
                        strMarker[i] = object.getString("marker");
                        strLng[i] = object.getString("lng");
                        strLat[i] = object.getString("lat");
                        Actors actor = new Actors();
                        actor.setName(strNama[i]);
                        actor.setImage(strFoto[i]);
                        actorsList.add(actor);
                    }
                    return true;
                }

            } catch (ParseException e1) {
                e1.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return false;
        }

        protected void onPostExecute(Boolean result) {
            dialog.cancel();
            adapter.notifyDataSetChanged();
            if(!result) {
                Toast.makeText(getApplicationContext(), "Tidak dapat mengambil data dari server, silahkan cek koneksi internet anda", Toast.LENGTH_LONG).show();
            }
        }
    }
}

我的适配器

    public class ActorAdapter extends ArrayAdapter<Actors> {
        private ArrayList<Actors> actorList;
        private LayoutInflater vi;
        private int Resource;
        private ViewHolder holder;

        public ActorAdapter(Context context, int resource, ArrayList<Actors> objects) {
            super(context, resource, objects);
            vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            Resource = resource;
            actorList = objects;
        }


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
             View v = convertView;
            if (v == null) {
                holder = new ViewHolder();
                v = vi.inflate(Resource, null);
                holder.imageview = (ImageView) v.findViewById(R.id.imgIcon);
                holder.tvName = (TextView) v.findViewById(R.id.nama);
                v.setTag(holder);
            } else {
                holder = (ViewHolder) v.getTag();
            }
            holder.tvName.setText(actorList.get(position).getName());
            Picasso.with(this.getContext()).load(actorList.get(position).getImage()).placeholder(R.layout.progress).resize(110,110).error(R.mipmap.error).into(holder.imageview);
            return v;
        }

        static class ViewHolder {
            public ImageView imageview;
            public TextView tvName;
        }
    }

My Actors Class

    public class Actors {
            private String name;
            private String image;
            public Actors(String name, String description, String image, String id) {
                this.name = name;
                this.image = image;
            }


            public Actors() {
                // TODO Auto-generated constructor stub
            }

            public String getImage() {
                return image;
            }

            public String getName() {
                return name;
            }

            public void setImage(String image) {
                this.image = image;
            }

            public void setName(String name) {
                this.name = name;
            }

        }

My Actors class

    public class Actors {
    private String name;
    private String image;
    public Actors(String name, String description, String image, String id) {
        this.name = name;
        this.image = image;
    }


    public Actors() {
        // TODO Auto-generated constructor stub
    }

    public String getImage() {
        return image;
    }

    public String getName() {
        return name;
    }

    public void setImage(String image) {
        this.image = image;
    }

    public void setName(String name) {
        this.name = name;
    }

}

Answer 1

得到错误值的原因是首先你将整个数据加载到 listview.When 你根据 text.you 过滤数据使用另一个数组列表并将其更新为 adapter.When 你单击您尝试从完整列表数据而不是 filterlist.so 获取错误值的列表视图。

让我们对代码做一些改动：

在 InformationActivity class 中删除字符串数组即

strId[],strNama[],strDeskripsi[],strFoto[],strMarker[],strLng[],strLat[];

像这样在 oncreate 中初始化 arraylist

array_sort= new ArrayList<Actors>();

将 array_sort 列表传递给适配器而不是 actorsList。

     adapter = new ActorAdapter(getApplicationContext(), R.layout.row, array_sort);
    listview.setAdapter(adapter);

在listview.setOnItemClickListener

中替换此代码

   listview.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
            // TODO Auto-generated method stub

            Intent i = new Intent(InformationActivity.this,Detail_Activity.class);
            i.putExtra("id",array_sort.get(position).getId());
            i.putExtra("nama",array_sort.get(position).getName());
            i.putExtra("deskripsi",array_sort.get(position).getDeskripsi());
            i.putExtra("foto",array_sort.get(position).getImage());
            i.putExtra("marker",array_sort.get(position).getMarker());
            i.putExtra("lng",array_sort.get(position).getLng());
            i.putExtra("lat",array_sort.get(position).getLat());
            startActivity(i);
        }
    });

在 JSONAsyncTask class 中使用此代码代替您的代码：

          if (status == 200) {
                HttpEntity entity = response.getEntity();
                String data = EntityUtils.toString(entity);
                JSONObject jsono = new JSONObject(data);
                JSONArray konten = jsono.getJSONArray("konten");

                for (int i = 0; i < konten.length(); i++) {
                    JSONObject object = konten.getJSONObject(i);
                     Actors actors=new Actors();
                     actors.setId(object.getString("id"));
                    actors.setName(object.getString("nama"));
                   actors.setDeskripsi(object.getString("deskripsi"));
                     actors.setImage(object.getString("foto"));
                     actors.setMarker(object.getString("marker"));
                     actors.setLng(object.getString("lng"));
                    actors.setLat(object.getString("lat"));

                    actorsList.add(actors);
                     array_sort.add(actors);
                }
                return true;
            }

最后像这样制作你的 Actors 对象 class。

public class Actors {

private String id;
private String name;
private String deskripsi;
private String image;
private String marker;
private String lng;
private String lat;


public Actors(String id, String name, String deskripsi, String image, String marker, String lng, String lat) {
    this.id = id;
    this.name = name;
    this.deskripsi = deskripsi;
    this.image = image;
    this.marker = marker;
    this.lng = lng;
    this.lat = lat;
}

public Actors() {
    // TODO Auto-generated constructor stub
}

public String getImage() {
    return image;
}

public String getName() {
    return name;
}

public void setImage(String image) {
    this.image = image;
}

public void setName(String name) {
    this.name = name;
}

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

public String getDeskripsi() {
    return deskripsi;
}

public void setDeskripsi(String deskripsi) {
    this.deskripsi = deskripsi;
}

public String getMarker() {
    return marker;
}

public void setMarker(String marker) {
    this.marker = marker;
}

public String getLng() {
    return lng;
}

public void setLng(String lng) {
    this.lng = lng;
}

public String getLat() {
    return lat;
}

public void setLat(String lat) {
    this.lat = lat;
}
}

带有搜索框的 ListView 自定义过滤器在过滤时会提供错误的选择项

ListView custom filter with search box gives wrong item selected when filtered

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