微调值更改当滚动微调器

Question

我正在使用微调控制器与自定义适配器。 的问题是，当我滚动微调，微调的价值观被改变其他位置的价值，这样的截图： ScreenShot

我没有布局的ListView包含。 我不知道为什么会发生这种情况。这是我的代码：

#TeamScreen.java# 

       public class TeamScreen extends Fragment 
      { 
       TeamListAdapter teamListAdapter; 
       List<HashMap<String, String>> teamList; 
       Spinner spin_list ; 

       // instance 
       private static TeamScreen instance; 
       public static TeamScreen getInstance() 
       { 
        if(instance == null) instance = new TeamScreen(); 
        return instance; 
       } 

       @Nullable 
       @Override 
       public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) 
       { 
        View v = inflater.inflate(R.layout.layout_team, container, false); 
        spin_list = (Spinner) v.findViewById(R.id.spin_list); 
        refreshTeamList(); 

        return v; 
       } 



       public void refreshTeamList() 
       { 
       String sql = "SELECT LIST_NO  " + 
         "   , LIST_NAME " + 
         "   , IMG0  " + 
         "   , IMG1  " + // IMG0 ~ IMG5 is number, between 0 and 5 
         "   , IMG2  " + 
         "   , IMG3  " + 
         "   , IMG4  " + 
         "   , IMG5  " + 
         "  FROM TABLE_TEST"; 

       // DBMng.selectQuerys will return result for the above query, as List<HashMap<String, String>> 
        teamList = DBMng.selectQuerys(getActivity(), sql, null); 
        if(teamList != null) 
        { 
          teamListAdapter = new TeamListAdapter(getActivity(), android.R.layout.simple_spinner_dropdown_item, teamList); 
          spin_list.setAdapter(teamListAdapter); 
          teamListAdapter.notifyDataSetChanged(); 
        } 
       } 

      } 




#TeamListAdapter.java# 
       public class TeamListAdapter extends ArrayAdapter<HashMap<String, String>> 
      { 

       Context ctx; 
       ListList<HashMap<String, String>> objects; 
       LayoutInflater inflater; 
       ViewHolder vh; 

       public TeamListAdapter(Context context, int resource, List<HashMap<String, String>> objects) 
       { 
        super(context, resource, objects); 
        this.ctx = context; 
        this.objects = objects; 
        this.inflater = LayoutInflater.from(context); 
       } 

       @Override 
       public View getDropDownView(int position, View v, ViewGroup parent) 
       { 
        return getCustomView(position, v, parent); 
       } 


       @Override 
       public View getView(int position, View v, ViewGroup parent) 
       { 
        return getCustomView(position, v, parent); 
       } 

       public View getCustomView(int position, View convertView, ViewGroup parent) 
       { 

        View row = convertView; 

        if(row == null) 
        { 
         row = inflater.inflate(R.layout.item_team, parent, false); 
         vh = new ViewHolder(row); 
         row.setTag(vh); 
        } 
        else vh = (ViewHolder) row.getTag(); 


        HashMap<String, String> item = objects.get(position); 

        vh.tv_name.setText(item.get("LIST_NAME")); 

        for(int i=0;i<6;i++) 
        { 
         if(!item.getString("IMG" + i).trim().equals("")) 
         { 
        // my image file name likes "test0.png", "test1.png", .... "test5.png" 
          int imgId = ctx.getResources().getIdentifier(
            "test" + item.get("IMG" + i), 
            "drawable", 
            ctx.getPackageName()); 

          if(imgId != 0) Glide.with(ctx).load(imgId).into(vh.imgs[i]); 
         } 
        } 
        return row; 
       } 

       class ViewHolder 
       { 
        ImageView imgs[]; 
        TextView tv_name; 

        public ViewHolder(View v) 
        { 
         imgs = new ImageView[6]; 
         imgs[0] = (ImageView) v.findViewById(R.id.img_team0); 
         imgs[1]= (ImageView) v.findViewById(R.id.img_team1); 
         imgs[2] = (ImageView) v.findViewById(R.id.img_team2); 
         imgs[3] = (ImageView) v.findViewById(R.id.img_team3); 
         imgs[4] = (ImageView) v.findViewById(R.id.img_team4); 
         imgs[5] = (ImageView) v.findViewById(R.id.img_team5); 
         tv_name = (TextView) v.findViewById(R.id.tv_name); 
        } 
       } 

      } 

Answer 1

• 因为你正在使用convertView，第9项将是相同1.对于这个问题的项目，你可以这样做：

     for(int i=0;i<6;i++){ 
          if(!item.getString("IMG" + i).trim().equals("")) 
          { 
           ... 
          //Load image using Glide if has imgId 
          Glide.with(ctx).load(imgId).into(vh.imgs[i]); 
  
          }else{ 
          //do something you can clear the image from the convertView and set the default image. 
           vh.imgs[i].setImageResource(R.drawable.defaultImage); 
          } 
         }