AutoCompleteTextView中的自定義過濾不起作用

Question

我正在擴展數組適配器，因爲它如下所示，但我仍然可以得到舊的結果，請告訴我是什麼問題？

public class Adaptor extends ArrayAdapter<String> implements Filterable{ 

     private ArrayList<String> items; 

     public Adaptor(Context context, int textViewResourceId, String[] objects) { 
      super(context, textViewResourceId, objects); 
      items = new ArrayList<String>(); 
      for (int i = 0; i < objects.length ; i++) 
       items.add(objects[i]); 

     } 


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


     @Override 
     public String getItem(int position) { 
      return items.get(position); 
     } 

     @Override 
     public Filter getFilter() { 
      Filter myFilter = new Filter(){ 

       @Override 
       protected FilterResults performFiltering(CharSequence arg0) { 
        FilterResults rezultate = new FilterResults(); 
        ArrayList<String> chestii = new ArrayList<String>(); 
        for (int i = 0; i < items.size() ; i++) 
        { 
         String tmp = items.get(i).toUpperCase(); 
         if (tmp.startsWith(arg0.toString().toUpperCase())) 
           chestii.add(items.get(i)); 

        } 
        rezultate.count = chestii.size(); 
        rezultate.values = chestii; 
        return rezultate; 
       } 

       @Override 
       protected void publishResults(CharSequence constraint, 
         FilterResults results) { 
        if (results != null && results.count > 0) 
        { 
         notifyDataSetChanged(); 
        } 
        else notifyDataSetInvalidated(); 

       } 

      }; 
      return myFilter; 
     } 




    } 

Answer 1

您的列表包含「項目」的項目，並且你必須從「項目」刪除位置，然後調用notifyDataSetChange，到最近恢復，你必須保存以前項目的所有項目你不修改它的項目

這是正常工作：

/** 
* Adapter wrapper to represent list of dialogs 
* @author Ryazantsev Dmitry 
* @email dilix90@gmail.com 2012 
*/ 
public class FriendsAdapter extends ArrayAdapter<User> 
{ 
    private final LayoutInflater inflater; 
    private final ImageLoader il; 
    private Context parentContext; 
    private List<User> mData; 
    private List<User> mOriginalData; 
    public SimpleImageLoader sil; 

    @Override 
    public void add(User object) 
    { 
     if (mOriginalData != null) 
      mOriginalData.add(object); 
     else 
      mData.add(object); 
    } 

    @Override 
    public void remove(User object) 
    { 
     if (mOriginalData != null) 
      mOriginalData.remove(object); 
     else 
      mData.remove(object); 
    } 

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

    @Override 
    public User getItem(int position) 
    { 
     return mData.get(position); 
    } 

    @Override 
    public int getPosition(User item) 
    { 
     return mData.indexOf(item); 
    } 

    public FriendsAdapter(Context context, int textViewResourceId, List<User> objects) 
    { 
     super(context, textViewResourceId, objects); 
     Log.v("refresh", context + " " + textViewResourceId + " " + objects); 
     parentContext = context; 
     inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     il = new ImageLoader(context); 
     mData = objects; 
     sil = new SimpleImageLoader(context, true, 64); 
     sil.setOnUiThread(false); 
    } 

    /** 
    * We have a custom view and need to organize it 
    */ 
    @Override 
    public View getView(final int position, View convertView, final ViewGroup parent) 
    { 

     ViewHolder holder; 
     if (convertView == null) 
     { 
      convertView = inflater.inflate(R.layout.friends_list_row, null); 
      holder = new ViewHolder(); 
      holder.name = (TextView) convertView.findViewById(R.id.friendName); 
      holder.root = convertView.findViewById(R.id.root); 
      holder.photo = (ImageView) convertView.findViewById(R.id.friendPhoto); 
      holder.online = (ImageView) convertView.findViewById(R.id.online); 
      convertView.setTag(holder); 
     } 
     else 
      holder = (ViewHolder) convertView.getTag(); 

     User user = getItem(position); 
     holder.online.setVisibility(user.isOnline() > 0 ? View.VISIBLE : View.GONE); 
     if (user != null) 
     { 
      holder.name.setText(user.getFIO()); 
      holder.photo.setTag(user.getPhotoUrl()); 
      if (user.getPhotoBitmap() != null) 
       holder.photo.setImageBitmap(user.getPhotoBitmap()); 
      else 
      { 
       holder.photo.setImageResource(R.drawable.contact_nophoto); 
       sil.displayImageUserAttach(holder.photo, user.getPhotoUrl(), user, null, false, null); 
      } 
     } 

     // parent.setVisibility(position % 2 == 0?View.GONE:View.VISIBLE); 
     return convertView; 
    } 

    private static class ViewHolder 
    { 
     public TextView name; 
     public ImageView photo; 
     public View root; 
     public View online; 
    } 

    @Override 
    public Filter getFilter() 
    { 
     return new Filter() 
     { 
      @SuppressWarnings("unchecked") 
      @Override 
      protected void publishResults(CharSequence constraint, FilterResults results) 
      { 
       Log.v("filter", "filter finished"); 
       mData = (List<User>) results.values; 
       if (results.count > 0) 
       { 
        notifyDataSetChanged(); 
       } 
       else 
       { 
        notifyDataSetInvalidated(); 
       } 
      } 

      @Override 
      protected FilterResults performFiltering(CharSequence constraint) 
      { 
       Log.v("filter", "filter perform"); 
       if (mOriginalData == null) 
        mOriginalData = new ArrayList<User>(mData); 
       List<User> result; 
       FilterResults r = new FilterResults(); 
       if (constraint == null || constraint.length() <= 0) 
        result = new ArrayList<User>(mOriginalData); 
       else 
       { 
        result = new ArrayList<User>(); 
        for (int i = 0; i < mOriginalData.size(); i++) 
         if (constraint.length() > 0 
           && mOriginalData.get(i).getFIO().toLowerCase() 
             .contains(constraint.toString().toLowerCase())) 
          result.add(mOriginalData.get(i)); 
       } 
       r.values = result; 
       r.count = result.size(); 
       return r; 
      } 
     }; 
    } 

}