如何在列表视图中显示 ITEM 和 SUBITEM

Question

使用 Android Studio 我在 MainActivity 中有这个列表视图

ArrayAdapter<RSSItem> adapter;
                adapter = new ArrayAdapter<RSSItem>(this,
                        android.R.layout.simple_list_item_1,myRssFeed.getList());
                setListAdapter(adapter);

这向我显示了我从 RSSItem 返回的提要的标题。有没有办法有描述，图像，ecc。对于子项和我为项返回的标题？

Answer 1

您可以使用消耗性列表，这将允许您显示组和子组的类型。为此，您需要创建一个 BaseExpandableListAdapter。您需要重写此类的两个方法。

@Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
         if (convertView == null) {
                LayoutInflater inflater =  (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.group_row, null);
               }
        //TextView tv=new TextView(context);
         TextView tv = (TextView) convertView.findViewById(R.id.tvGroupName);
        //tv.setText(parentList[groupPosition]);
         tv.setText(category_list.get(groupPosition).toString());
        //tv.setPadding(70,0,0,10);
        //return tv;
         return convertView;
    }
@Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
         if (convertView == null) {
                LayoutInflater inflater =  (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.child_row, null);
               }
        //TextView tv=new TextView(context);
         TextView tv = (TextView) convertView.findViewById(R.id.tvPlayerName);
        //tv.setText(childList[groupPosition][childPosition]);
         tv.setText((String)((ArrayList)sub_category_list.get(groupPosition)).get(childPosition));
        //tv.setPadding(70,0,0,10);
        //return tv;
        return convertView;
    }