无法在简单适配器中设置评分栏android

Question

在我的android项目中有一个列表，显示来自Google位置API的一些列表，Google API返回评分作为字符串值，我想将它添加到简单的适配器显示等级栏列表中，请帮我解决这个问题....

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

    import org.json.JSONArray; 
    import org.json.JSONException; 
    import org.json.JSONObject; 

    import android.app.ListActivity; 
    import android.app.ProgressDialog; 
    import android.content.Intent; 
    import android.os.AsyncTask; 
    import android.os.Bundle; 
    import android.view.View; 
    import android.widget.AdapterView; 
    import android.widget.AdapterView.OnItemClickListener; 
    import android.widget.ListAdapter; 
    import android.widget.ListView; 
    import android.widget.SimpleAdapter; 



    public class MyListActivity extends ListActivity { 

     // JSON Node names 
        private static final String TAG_CONTACTS = "results"; 
        private static final String TAG_ID = "id"; 
        private static final String TAG_NAME = "name"; 
        private static final String TAG_GENDER = "rating"; 
    //    private static final String TAG_ADDRESS = "formatted_address"; 
        private static final String TAG_REFERENCE = "reference"; 
        private static final String TAG_ICON = "icon"; 

     // contacts JSONArray 
     JSONArray result = null; 

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

      // url to make request 

      Intent in = getIntent(); 
      String location = in.getStringExtra("TAG_LOCATION"); 
      String type = in.getStringExtra("TAG_TYPE"); 
      url = "https://maps.googleapis.com/maps/api/place/textsearch/json?query="+type+"+in+"+location+"&sensor=true&key=AIzaSyD38pak_katUfSR92WE2_O2b9y0JSp5htA"; 
      //} 

    //  LoadData ld = new LoadData(); 
    //  ld.onPreExecute(); 
     new LoadData().execute(); 

     } 

    class LoadData extends AsyncTask<String, String, String> 
     { 

    // ProgressDialog pDialog; 
    // protected void onPreExecute() { 
    //  
    //pDialog = new ProgressDialog(MyListActivity.this);  
    //pDialog.setMessage("Populating list please wait..."); 
    //  pDialog.setIndeterminate(false); 
    //  pDialog.setCancelable(false); 
    //  pDialog.show(); 
    //} 

     // Hashmap for ListView 
      ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>(); 
     protected String doInBackground(String... args) { 


      // Creating JSON Parser instance 
      JSONParser jParser = new JSONParser(); 
      // getting JSON string from URL 

      JSONObject json = jParser.getJSONFromUrl(url); 

      try { 
       // Getting Array of Contacts 
       result = json.getJSONArray(TAG_CONTACTS); 
       // looping through All Contacts 
       for(int i = 0; i < result.length(); i++){ 
        JSONObject c = result.getJSONObject(i); 



        // Storing each json item in variable 
        String id = c.getString(TAG_ID); 
        String name = c.getString(TAG_NAME); 
    //    String email = c.getString(TAG_EMAIL); 
    //    String icon = c.getString(TAG_ICON); 
        String rating = c.getString(TAG_GENDER); 

        // Phone number is agin JSON Object 
    //    JSONObject phone = c.getJSONObject(TAG_PHONE); 
    //    String mobile = phone.getString(TAG_PHONE_MOBILE); 
    //    String home = phone.getString(TAG_PHONE_HOME); 
    //    String office = phone.getString(TAG_PHONE_OFFICE); 

        // creating new HashMap 
        HashMap<String, String> map = new HashMap<String, String>(); 

        // adding each child node to HashMap key => value 
        map.put(TAG_ID, id); 
        map.put(TAG_NAME, name); 
    //    map.put(TAG_ICON, icon); 
        map.put(TAG_GENDER, rating); 
    //    map.put(TAG_EMAIL, email); 
    //    map.put(TAG_PHONE_MOBILE, mobile); 

        // adding HashList to ArrayList 
        contactList.add(map); 
       } 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 
      return null; 
       }  
      protected void onPostExecute(String file_url) { 

    //  this.pDialog.cancel(); 
        // dismiss the dialog after getting all products 
         /** 
      * Updating parsed JSON data into ListView 
      * */ 
      ListAdapter adapter = new SimpleAdapter(MyListActivity.this, contactList, 
        R.layout.listview_item_row, 
        new String[] { TAG_NAME, TAG_GENDER,}, new int[] { 
          R.id.txtTitle, R.id.ratingbar }); 

      setListAdapter(adapter); 

      // selecting single ListView item 
      ListView lv = getListView(); 

      // Launching new screen on Selecting Single ListItem 
      lv.setOnItemClickListener(new OnItemClickListener() { 


       public void onItemClick(AdapterView<?> parent, View view, 
         int position, long id) { 
        // getting values from selected ListItem 
    //    String name = ((TextView) view.findViewById(R.id.name)).getText().toString(); 
    //    String cost = ((TextView) view.findViewById(R.id.formatted_address)).getText().toString(); 
    //    String description = ((TextView) view.findViewById(R.id.mobile)).getText().toString(); 

        // Starting new intent 
        Intent in = new Intent(getApplicationContext(), ProfileViewActivity.class); 
    //    in.putExtra(TAG_NAME, name); 
    //    in.putExtra(TAG_EMAIL, cost); 
    //    in.putExtra(TAG_PHONE_MOBILE, description); 
        startActivity(in); 

       } 
      }); 

      } 

    } 
    } 

Answer 1

的RatingBar部件应放置在在适配器，R.layout.listview_item_row使用列表行布局。现在，我只在主布局中的ListView下放置了一个RatingBar小部件。