ListView搜索工具Android

Question

我正在尋找在我的ListView上實現搜索功能。到目前爲止，我已經成功填充ListView作業，並且我有一個EditText字段用作我的搜索框。這是我迄今爲止的代碼;

public class CurrentJobsActivity : Activity 
    { 
     private ListView listView; 
     private EditText inputSearch; 

     protected override void OnCreate(Bundle savedInstanceState) 
     { 
      base.OnCreate(savedInstanceState); 

      SetContentView(Resource.Layout.CurrentJobs); 
      LoadCurrentJobs(); 
     } 

     private void LoadCurrentJobs() 
     { 
      var _currentJobsService = new CurrentJobsService(); 
      var listOfJobs = _currentJobsService.GetJobList("currentjobs"); 

      listView = FindViewById<ListView>(Resource.Id.currentJobsListView); 
      inputSearch = FindViewById<EditText>(Resource.Id.inputSearch); 

      listView.Adapter = new JobListAdapter(this, listOfJobs); 
      listView.ItemClick += OnListItemClick; 

      inputSearch.TextChanged += InputSearchOnTextChanged; 
     } 

     private void InputSearchOnTextChanged(object sender, TextChangedEventArgs e) 
     { 
      listView.SetFilterText(inputSearch.Text); 
     } 

正如你可以看到我已經嘗試做一個搜索與然而listView.SetFilterText(inputSearch.Text);什麼也沒有發生因爲用戶輸入。我如何修改這個來實現搜索功能？

Answer 1

您需要啓用您的列表視圖的文本過濾器。

listView.setTextFilterEnabled(true); 

更改爲：

private void LoadCurrentJobs() 
{ 
    var _currentJobsService = new CurrentJobsService(); 
    var listOfJobs = _currentJobsService.GetJobList("currentjobs"); 

    listView = FindViewById<ListView>(Resource.Id.currentJobsListView); 
    inputSearch = FindViewById<EditText>(Resource.Id.inputSearch); 

    listView.Adapter = new JobListAdapter(this, listOfJobs); 
    listView.ItemClick += OnListItemClick; 
    listView.setTextFilterEnabled(true); 
    inputSearch.TextChanged += InputSearchOnTextChanged; 
} 

Answer 2

你可以找到一個完整的樣本Here（轉換爲C＃是很容易我猜）：

package com.androidhive.androidlistviewwithsearch; 

import java.util.ArrayList; 
import java.util.HashMap; 

import android.app.Activity; 
import android.os.Bundle; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.widget.ArrayAdapter; 
import android.widget.EditText; 
import android.widget.ListView; 

public class MainActivity extends Activity { 

    // List view 
    private ListView lv; 

    // Listview Adapter 
    ArrayAdapter<String> adapter; 

    // Search EditText 
    EditText inputSearch; 


    // ArrayList for Listview 
    ArrayList<HashMap<String, String>> productList; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     // Listview Data 
     String products[] = {"Dell Inspiron", "HTC One X", "HTC Wildfire S", "HTC Sense", "HTC Sensation XE", 
           "iPhone 4S", "Samsung Galaxy Note 800", 
           "Samsung Galaxy S3", "MacBook Air", "Mac Mini", "MacBook Pro"}; 

     lv = (ListView) findViewById(R.id.list_view); 
     inputSearch = (EditText) findViewById(R.id.inputSearch); 

     // Adding items to listview 
     adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, products); 
     lv.setAdapter(adapter); 

     /** 
     * Enabling Search Filter 
     * */ 
     inputSearch.addTextChangedListener(new TextWatcher() { 

      @Override 
      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
       // When user changed the Text 
       MainActivity.this.adapter.getFilter().filter(cs); 
      } 

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

      } 

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

Answer 3

如果您正在分析數據並顯示它在列表視圖中，只是試試這種方式，這對我工作

public class FriendsFragment extends Fragment { 



    private ProgressDialog pDialog; 

    // Creating JSON Parser object 
    JSONparserr jsonParser = new JSONparserr(); 

    ArrayList<HashMap<String, String>> WebsiteList; 

    // albums JSONArray 
    JSONArray data = null; 
    String link_url; 

    ArrayList<HashMap<String, String>> arrayTemplist; 

    private AutoCompleteTextView inputSearch; 

    private ListView lv; 


    private static final String URL_ALBUMS = "your url"; 

    private static final String WEBSITE_MENU_ID = "subcategoryname"; 

    private static final String TAG_MATCH = "subcategorylist"; 
    private static final String TAG_PROFILE = "CatId"; 
    private static final String TAG_SUBCATID = "SubId"; 
    //private static final String TAG_CAST="Company"; 
    private int ab; 
    private String adi; 
    int current_page = 0; 
    public String pgcount; 
    private JSONArray addbanners; 
    private String imggg; 
    private String counts; 
    private String totpage; 
    private String curpage; 
    private JSONArray interestaccept; 

    private static final String BANERARR="add"; 


    private static final String BANNER_PIC="addimg"; 
    private ImageView banimgs; 

    public FriendsFragment() { 
     // Required empty public constructor 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.products_activity, container, false); 
     getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); 


     lv = (ListView) rootView.findViewById(R.id.listpehlu); 

     banimgs=(ImageView)rootView.findViewById(R.id.addbannercat); 
     WebsiteList = new ArrayList<HashMap<String, String>>(); 
     new LoadBrandBanner().execute(); 
     // Loading Albums JSON in Background Thread 
     new LoadCatagory().execute(); 
     inputSearch = (AutoCompleteTextView) rootView.findViewById(R.id.autoCompleteTextViewhomefrag); 

     inputSearch.addTextChangedListener(new TextWatcher() { 


      @Override 
      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 

       arrayTemplist = new ArrayList<HashMap<String, String>>(); 
       String searchString = inputSearch.getText().toString().toLowerCase(); 

       for (int i = 0; i < WebsiteList.size(); i++) { 
        String currentString = WebsiteList.get(i).get(FriendsFragment.this.WEBSITE_MENU_ID); 
        if (currentString.toLowerCase().startsWith(searchString)) { 
         arrayTemplist.add(WebsiteList.get(i)); 
        } 
       } 

       for (int i = 0; i < arrayTemplist.size(); i++) { 
        String currentstrin = arrayTemplist.get(i).get(FriendsFragment.this.WEBSITE_MENU_ID); 
        //Toast.makeText(getApplicationContext(), currentstrin, Toast.LENGTH_LONG).show(); 

       } 
       SimpleAdapter adapters = new SimpleAdapter(getActivity(), arrayTemplist, R.layout.list_item_match, new String[]{WEBSITE_MENU_ID 
       }, new int[]{ 
         R.id.txtbrndnm}); 
       lv.setAdapter(adapters); 

      } 

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

      } 

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



    class LoadCatagory extends AsyncTask<String, String, ArrayList<HashMap<String, String>>> { 

     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(FriendsFragment.this.getActivity()); 
      pDialog.setMessage("Loading..."); 
      pDialog.setIndeterminate(true); 
      // pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.custom_progress)); 
      pDialog.setCancelable(false); 
      pDialog.show(); 
     } 

     protected ArrayList<HashMap<String, String>> doInBackground(String... args) { 
      ServiceHandler sh = new ServiceHandler(); 
      // Making a request to url and getting response 
      ArrayList<HashMap<String, String>> data = new ArrayList<HashMap<String, String>>(); 
      String jsonStr = sh.makeServiceCall(URL_ALBUMS, ServiceHandler.GET); 

      Log.d("Response: ", "> " + jsonStr); 

      if (jsonStr != null) { 
       try { 
        JSONObject jsonObj = new JSONObject(jsonStr); 

        // Getting JSON Array node 
        interestaccept = jsonObj.getJSONArray(TAG_MATCH); 

        for (int i = 0; i < interestaccept.length(); i++) { 
         JSONObject c = interestaccept.getJSONObject(i); 
         HashMap<String, String> map = new HashMap<String, String>(); 
         map.put(WEBSITE_MENU_ID, c.getString(WEBSITE_MENU_ID)); 
         map.put(TAG_PROFILE, c.getString(TAG_PROFILE)); 
         map.put(TAG_SUBCATID, c.getString(TAG_SUBCATID)); 
         //map.put(TAG_COUNT, c.getString(TAG_COUNT)); 
         WebsiteList.add(map); 
        } 
       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 
      } else { 
       Log.e("ServiceHandler", "Couldn't get any data from the url"); 
      } 
      return null; 
     } 

     protected void onPostExecute(ArrayList<HashMap<String, String>> result) { 
      super.onPostExecute(result); 

      // dismiss the dialog after getting all albums 
      if (pDialog.isShowing()) 
       pDialog.dismiss(); 
      // updating UI from Background Thread 

      ListAdapter adapter = new SimpleAdapter(
        getActivity(), WebsiteList, 
        R.layout.list_item_match, new String[]{WEBSITE_MENU_ID 
      }, new int[]{ 
        R.id.txtbrndnm}); 
      lv.setAdapter(adapter); 


      lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
       @Override 
       public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { 


        Intent intent=new Intent(getActivity(),Productss.class); 
        intent.putExtra("catidss", WebsiteList.get(i).get(TAG_PROFILE)); 
        intent.putExtra("subcatidss", WebsiteList.get(i).get(TAG_SUBCATID)); 
        startActivity(intent); 
       } 
      }); 
     } 

    } 


}