ListView僅顯示arraylist中的第一項

Question

List View僅顯示數據中的第一項。我如何讓它顯示數組列表中的所有數據。我認爲它是因爲我在地圖bur中使用了相同的密鑰，所以我如何改變它並讓它出現。任何幫助表示讚賞。

package menu.saryal.example.com.menu; 

import android.content.Intent; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

import java.util.ArrayList; 


/** 
* A placeholder fragment containing a simple view. 
*/ 
public class ItemOrderedFragment extends Fragment { 

    private ArrayAdapter<String> itemTitle; 
    public final static String EXTRA_TEXT = "menu.saryal.example.com.menu"; 

    public ItemOrderedFragment getThisItemOrderedFragment() { 
     return thisItemOrderedFragment; 
    } 

    ItemOrderedFragment thisItemOrderedFragment = this; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.fragment_item_ordered, container, false); 

     final MenuDbHelper dbHandler = new MenuDbHelper(this.getActivity()); 
     ArrayList<menuDescription> data = dbHandler.readData(); 

     // Get a reference to the ListView, and attach this adapter to it. 
     ListView listView = (ListView) rootView.findViewById(R.id.fragment_item_ordered_list_view); 


     ArrayList<HashMap<String, String>> albumsList; 
     albumsList = new ArrayList<HashMap<String, String>>(); 
     HashMap<String, String> map = new HashMap<String, String>(); 

     // adding each child node to HashMap key => value 
     for(menuDescription x:data){ 
      map.put("Title", x.getTitle()); 
      map.put("Description", x.getDescription()); 
     } 
     // adding HashList to ArrayList 
     albumsList.add(map); 

     ListAdapter adapter = new SimpleAdapter(
       this.getActivity(), 
       albumsList, 
       R.layout.list_item_with_image, 
       new String[] { "Title", "Description"}, 
       new int[] {R.id.list_item_with_image_text_view, R.id.recepit_cost_text_view }); 
     if (data.size()>0){ 
      listView.setAdapter(adapter); 
     } 

     listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) { 
       String title = itemTitle.getItem(position); 
       menuDescription item = dbHandler.findByTitle(title); 
       String cost_string = "" + item.getCost(); 
       String totalCost_string = "" + item.totalCost; 
       String totalOrder_string = "" + item.getTotalOrder(); 
       String[] transfer_data = {item.getTitle(),item.getDescription(),cost_string,totalCost_string,totalOrder_string,item.getImage()}; 
       Intent intent = new Intent(getActivity(), EditDetailPage.class); 
       intent.putExtra(EXTRA_TEXT, transfer_data); 
       startActivity(intent); 
      } 
     }); 
     dbHandler.close(); 
     return rootView; 
    } 
} 

Answer 1

那是因爲你實際上只增加一個HashMap到ArrayList。

ArrayList<HashMap<String, String>> albumsList = new ArrayList<HashMap<String, String>>(); 

for(menuDescription x:data){ 
    //prepare new HashMap 
    HashMap<String, String> map = new HashMap<String, String>(); 
    map.put("Title", x.getTitle()); 
    map.put("Description", x.getDescription()); 
    //add HashMap to ArrayList 
    albumsList.add(map); 
}